Ukuqina komhlaba kumelwa njengencazelo ebalulekile yomsebenzi wezakhiwo ezinzulu okukhuluma ngokuqinisa amandla okuphatha nokuzinza kwesihlabathi nezindawo zamatshe. Lolu hlobo lochwepheshe lubandakanya izindlela ezahlukahlukene ze-geotechnical eziklanyelwe ukuhlela izindawo zezakhiwo, ukubhekana nezinkinga zesihlabathi, nokwenzelisa amandla afanele okuphatha izakhiwo ezihlukahlukene. Izinsizakalo zokwakha ezihlobene nokuqina komhlaba zibalulekile emiphakathini yokwakha lapho izimo zesihlabathi ezingokwemvelo zingahlangabezani nezidingo zezakhiwo eziphakeme, zidinga ukungenelela ngezindlela ezitholakele kanye nemishini ethile ukuze kufezwe izimo zomhlaba ezifunwayo nezinga lokusebenza. Izindlela eziphambili ezisetshenzisiwe ekuqiniseni komhlaba zifaka phakathi kwe-vibratory compaction, ethi isebenzise amahhamer avibratory kanye namapulatifomu avibratory ukuqinisa ama-granular soils nokuthuthukisa izici zawo zobunjiniyela. Le ndlela ikakhulukazi isebenza kahle emisebenzini ephakathi nendawo kuya kwabukhulu lapho ukuqiniswa okujwayelekile ngaphakathi kwezindonga ezinkulu kudingeka. Ngaphezu kwalokho, izindlela zokucindezela ezimisiwe ezisebenzisa imishini emakhosini kanye nezindlela zokucindezela ezisebenzaudzo, ezihilela ukuwa kokuphatha kakhulu, zisetshenziswa ngokuhambisana nezinto zesihlabathi nezidingo ezithile zesiza. Ukufaka esikhundleni kwezinto zesihlabathi kanye nokwelashwa komhlabathi kuyizindlela ezikhona ezisetshenziswa uma izinto ezikhona zidinga ukukhishwa ngokuphelele noma ukuqiniswa kwezinye izinto. Ukuhlanza nokuthuthukiswa kokugeleza kuvamise ukuhlanganiswa nezinhlelo zokuqina komhlaba ukuze kulawule izimo zomfula ezingathinta ukusebenza kwesihlabathi noma ukusebenza kokwakha. Imishini ethile yokuqina komhlaba ifaka phakathi ama-hammers avibratory, ama-compactors akhiwa ku-excavator, kanye nemishini ethile ye-vibratory compaction engakwazi ukubhekana nezifundo ezihlukahlukene zesihlabathi nezithiyo zesiza. Umsebenzi wokuqina komhlaba ungasetshenziswa ezimeni ezihlukene ze-sand kunye nezindawo, kusukela ku-clays ethambile kanye ne-silts edinga ukuqiniswa ngokuqaliswa kombinder ukuya ezihlahleni ezikhululekile ezidinga ukuqiniswa. Le nsizakalo ibhekana nezinselelo ezifana nokuvimbela ukuhamba okuhlakaniphile, ukunciphisa ubungozi bokuhlanza emaphandleni ethule nasezifundeni ezine-seismic, nokwandisa amandla okuphatha womabili ama-systems aphakeme futhi ajulile. Abakhi abaphatha amaphrojekthi wokuqina komhlaba kumele bahlolisise izigaba zomhlaba, amazinga emithombo, nezilinganiso ze-geotechnical ezithile ukuze bakhethe izindlela ezifanele zokuqina. Ukucatshangelwa kwemvelo, okuhlanganisa ukuphathwa kwedust nokulawulwa kwezimvo, kubalulekile emisebenzini ye-professional ground stabilization. Ezinhlelweni zokwakha, ukuqinisa komhlaba kusekela impumelelo yamaphrojekthi ezokwakha kufaka phakathi izakhiwo eziphakeme, izikhungo zezimboni, inethiwekhi yezokuthutha, kanye nezakhiwo eziphakeme emanzini. Uhlobo lo msebenzi lusiza ukuhlinzeka ngamasimu afanele ukuze kuncishiswe ubungozi obuhambisana nokuhamba kwesihlabathi nokunyakaza. Ukuqina komhlaba okusebenzayo kunciphisa izikhathi zokwakha, kuthuthukisa ukuphepha kwezakhiwo, futhi kuhlinzeka ngezimo ezinzulu zesikhumbuzo ezakhiweni ezifakwe. Ukufinyelela kumishini ethembekile yokuqina komhlaba kanye nabasebenzi abanolwazi kubalulekile kubakhi, abakhi, kanye nezinkampani zokwakha ezisebenza emaphrojekthini e-geotechnical across geological nezinhlaka zemvelo ezahlukene.
Ukugxila emhlabeni ukuze uqinise izintaba kuyindlela ebalulekile yokuthuthukisa umhlaba esetshenziswa ukuze kuqinise izintaba ezikhona noma ezintsha, kugweme ukuqhekeka, imvula yendawo, kanye nokunyakaza komhlaba ngezimo eziyinkimbinkimbi ze-geotechnical. Le ndlela ibandakanya ukufaka izinto zokwakha zensimbi, ngokuvamile izinhlu zensimbi ezincane noma izintambo, emgqeni wezindawo zomhlaba ngama-intervals ajwayelekile nezimo, kudala indawo eqinisiwe efaka amandla okuphuka nezinguquko ze-intaba. Izikhonkwane ziba ziduziwe ukuze kuqinisekiswe ukuthi kubambisene ngokuphelele nezwe elizungezile, kushintshe izintaba eziyingozi zibe yizakhiwo ezakhiwe ezingakwazi ukuxhasa izithuthi nokumelana nezikhala zokwehluleka. Le ndlela ikakhulukazi ibalulekile ezindaweni zasemadolobheni lapho izithiyo zendawo, ukujula kwemisebenzi yezakhiwo ezikhona, noma izimo zemvelo ezibucayi kwenza imva yokugcina yendabuko ingaba yingozi. Ukugxila emhlabeni kudinga imishini ethile yokubhola, amasistimu okungena u-grout, kanye nokuhlelwa kokufakwa ngokucophelela ukuze kuqinisekiswe ukuthi izikhonkwane zitholakala kahle, ukuthuthukiswa kobudlelwano, kanye nokusebenza okuvamile kohlelo. Inqubo yokufaka iqala ngokubhola ngendlela ehleliwe ukuze kuhlolwe izikhonkwane ezindaweni ezithile nezimo zokuhambisana, ngokuvamile zisuka ku-10 kuya ku-30 degrees ngaphansi kokuphakama. Imishini yokubhola enekhono eliphakeme, imishini yokubhola ye-rotary, kanye nezinsiza zokubhola zokuqinisa zibalulekile ekugxileni ezinhlelweni ezahlukene zomhlaba kanye nezigodi. Uma sebulwe, izikhonkwane zithola ukuqina—ngokuvamile izinsika zensimbi ezinomjikelezo, izinsika eziyingozi zokufaka u-grout, noma izintambo ezipreshi—eziboshwe ukuze kuqinisekiswe ukuhlanganiswa kwezakhiwo nezwe elizungezile. Uhlobo lwezikhonkwane ezikhethiwe kanye nendlela yokubhodla kuye ngokwakheka komhlaba, izimo zamanzi emhlabeni, kanye nezidingo zokwakha. Ukuxazulula izintaba okuthe xaxa, ngokuvamile ezimfushane noma eziseduze kwemifantu yokuphakama eyisikulu, kuqhubeka kancane njengoba umugqa wezikhonkwane uthuthukisa ikhono laso lokwakha, nge-geotechnical monitoring iqinisekisa ubunjalo ngesikhathi sokwakha. Ukugxila emhlabeni kutholakala kakhulu ekugcineni izintaba zomgwaqo kanye nezitimela, ukwakhiwa kwe-cuts zokudiliza izindawo zokugcina, ukuqina kwezingcindezeli ezikhona, kanye nokwakhiwa kwezinhlangothi ezikhaliphile ezimweni ezimibalabala nasemathunjini aphukile. Kubalulekile ikakhulukazi ezindaweni zomhlaba eziqukethe izinto ezihlanganisiwe, ubumba, kanye nezimfihlo ezishubi lapho izindlela zokuvikela izintaba zendabuko zingase zibe nezindleko eziphakeme kakhulu noma zingakabi khona. Le ndlela ilungele izimo zomhlaba-netstone lapho i-rock bolting yendabuko yodwa inganelekile, futhi ikhuluma kahle emiphakathini ephezulu lapho ukuqina kwezintaba kufanele kugcinwe eduze kwezinsiza, imisebenzi, kanye nezinsiza. Impumelelo yokugxila emhlabeni iyancika ocwaningweni lwegeotechnical oluhle ukuze luqondise izigaba zomhlaba, kuthuthukiswe izimo eziyingozi, kanye nokukhomba izimo zamanzi emhlabeni. Impumelelo iphinde idinge ababhalile bokusebenza abaqeqeshile, ababhodlayo abanolwazi, kanye nokulawulwa kwemithombo ebufakazini ngesikhathi sokufakwa. Nezinhlelo ezihilela izintaba eziphakeme, ukwakha okunamandla, noma izimo eziyinkimbinkimbi zaphansi komhlaba, ukugxila emhlabeni kuvame ukuba yisisombululo esihamba phambili sokugcina umhlaba, kuphinde kuthuthukiswe ukusebenza kwendawo ye-intaba ngesikhathi sinciphisa umthelela wemvelo nokuphazamiseka kokwakhiwa uma kuqhathaniswa nemisebenzi enjengezokwakha.
Izinhlelo ze-anchor wall zokwakha i-slope zokwakha izisekelo ezijulile ziwumsebenzi obalulekile wokuzinzisa izindawo eziphakeme nokuvikela ukwehluleka okukhulu kwemithafa ezinhlelweni ze-geotechnical eziyinkimbinkimbi. Lezi zinhlelo zihilela ukufaka ama-anchor omhlaba anekhono eliphezulu—ngokuvamile amacuba ensimbi, imigoqo, noma izinsimbi—ngaphakathi emhlabathini oqinile noma ezindongeni zeqwa ngaphansi kwezindawo eziphakeme ezingazinzile. Ama-anchor aqiniswa futhi agrutwa ukuze kudaleke ukuvinjelwa kwemishini okuphikisana namandla okweqa, kunciphise ukuhamba okujoliwe, futhi kugcine ubuqiniso be-slope ngaphansi kwezinsiza ezimile nezishukumisayo. Izinhlelo ze-anchor wall zibalulekile ekuvikeleni izinto ezisemhlabeni, ukuthuthukiswa kwezindawo zokuhlala, nezindlela zokuhamba ezakhiwe phezulu noma eduze kwemithafa lapho amazinga emvelo noma akhiwe edlula angles azinzile. Lo msebenzi wethuba uyisici esiyisisekelo sohlelo lwezobunjiniyela be-geotechnical bamanje, uvumela ukuthuthukiswa ezindaweni ezingatholakali ngenxa yokungazinzisi kwemithafa. Ukufakwa kwezinhlelo ze-anchor wall kudinga amathuluzi akhethekile nezindlela ezichwepheshile ezihlelwe ngezimo zomhlabathi nezindonga ezithile. Ama-anchor ezindonga ezinjengokuhlinzwa komhlaba kanye ne-rock anchors afakwa usebenzisa imishini yokuhlinza, amathuluzi wokuhlinza ama-rotary, noma ama-attachments akhethekile wokuhlinza ama-anchor anganga nokuhlungela ezinhlotsheni ezahlukene ze-geological. Inqubo yokuhlinza kufanele icabangele ukuhlukaniswa komhlaba, umthwalo okhuthazayo, kanye nezinga lekhwalithi lendoda ukuze kuqinisekiswe ukuthi ama-anchor afakwe kahle futhi anomthwalo ofanele. Uma ama-anchor efakwe, agrutwa ngezinhlelo zokugruta ezine-cementitious grout noma i-polyester resin ukuze athole isixhumanisi esingapheli nomkhiqizo ozungezile. Imishini yokuthi ama-anchor aqinisiwe ifaka umthwalo oqondile we-prestress ukuvula ama-anchor, futhi ukuhlola umthwalo kwenziwa ukuze kuqinisekiswe ukuthi wonke ama-anchor ahlangabezana nezidingo zokwakhiwa. Izixazululo zamahhala nezilungile ze-anchor zikhona kuye ngensiza yesikhashana nezidingo zemvelo. Izinhlelo ze-anchor wall zitholakala ezimweni ezahlukene zokwakha kufaka phakathi ukuvikeleka kwemigwaqo nasemijondolo, ukuvikelwa kwemithafa yemigodi, ukuqina kokwakha kwamadamu, nokuvikelwa kwe-slope kwezakhiwo ezinezingxenye eziningi ezakhiwe ezindaweni eziphakeme. Lezi zinhlelo zamukela izimo ze-hydrogeological eziyinkimbinkimbi, izakhiwo zomhlaba ezilula, i-rock ehlatshwe, kanye nezindawo ezine-movement noma i-creep ekhankanywe ngaphambili. Ukunakekelwa nokubekwa kweso kwezinhlelo ze-anchor wall kuthuthukisa isikhathi sokusebenza kwazo ngokuhlola umthwalo ngezikhathi ezithile kanye nezinyathelo zokuvikela ukugqoka, kuqinisekisa ukuzinziswa kweslope isikhathi eside kanye nokuphepha kwabantu abasebenza. Lezi zinhlelo ngokuvamile zixhumaniswe nezinye izindlela zokuzinzisa umhlaba ezifana nokubhula umhlaba, izakhiwo zokusekela i-micropile, noma izindonga zokugcina ezivamile ukuze kudaleke izixazululo zokwakha eziphelele. Njengoba ukuthuthukiswa kwezakhiwo kube phezulu emhlabeni ongemuhle onenkinga ye-topography, izinhlelo ze-anchor wall ziqhubeka nokuhlinzeka abenjiniyela nge-theknoloji eqinisekisiwe yokuthuthukiswa komhlaba okuqhubekayo nokwakhiwa kwe-slope ezindaweni ezinzima ze-geotechnical.
Imibhobho ye-micropile yokugcina izintaba imele isixazululo esikhethekile sezehlakalo ze-geotechnical ukuze kuqedwe izintaba ezibokhwe kakhulu nezidingo zomhlaba ezindaweni eziningi lapho izinhlelo ezivamile zokwakha ezijulile zingasebenzi kahle noma zingatholakali. Ezinye izaziwa ngokuthi ama-micro-piles noma amarhente amancane, lezi zinto zokwakha zihlala zikhona phakathi kuka-75 no-300 millimitha ububanzi futhi zisebenza ngokwakha ukhahlamba oluqinile phansi oluphikisa ukuhamba kwezimpande ezivundlile futhi kuthuthukisa ukuqina kwezintaba. Lesi simiso sisebenza ngokudlulisa ukumelana nokusonteka kanye nokukwazi ukukhipha umzimba ezindaweni ezingezinhle zephuza ukuya ezingeni eliphezulu eliqinile, okwenza kube yindlela ephumelelayo yokuthuthukisa umhlaba wezindawo zokuhlala, imisebenzi yokwakha, kanye nezikhungo zezimboni ezakhiwa ezindaweni eziyinkinga lapho imishini yokwakha ejulile evamile ingenakufinyelela noma ukusebenza kahle. Ukufakwa kwemibhobho ye-micropile kudinga imishini yokubhola ethuthuke kakhulu eqinisekiswe ama-augers aqhubekayo, izinhlelo zokuhlasela ezijikayo, noma ama-augers anempilo ukuze kunezelwe ukuqina okudingekayo kokwakha ama-pile aqinile futhi afakwe kahle ezimeni ezidingwayo. Ngemva kokubhola, isimbiwa sokuqinisa noma i-rebar ifakwa embobeni, lapho izinhlelo ze-grouting z pressure zikhokhela i-grout ye-cement ukuze kuthuthukiswe amakhono okuhambisa carga phakathi kwepile nezindawo ezizungezile. Le ndlela ehlanganisiwe ivumela abaphathi ukuba basebenze ezindaweni ezincane eziseduze nezakhiwo ezikhona, ezindaweni eziphezulu zeziqongweni, nasemathafeni anokufinyelela okulinganiselweyo lapho imishini yokwakha eqinile engakwazi ukusiphatha kahle. Ukujula kwe-pile kukuvumela ukufaka kokubili okuma phezulu nokuhlabahlaba, kunikeza ukuhlela okuhle kwezintaba nezinga eliphezulu elibhalwe ngaphandle kokuphazamiseka okukhulu komhlaba noma ukufaka izinsiza. Izinhlelo ze-micropile zemibhobho ziphendula izinselelo zokuphepha kwezintaba ezimweni ezihlukahlukene ze-geological kanye nezimo zokwakha okuhlanganisa amagobolondo aqinile nezihlahla eziphukile, amalungelo aluhlaza, nezinto ezivame ukuba nembethe. Izicelo zihlanganisa ukuqinisa kwezintaba eziwela phansi, ukugcina okuhlala emva kwezindlu ezintsha ezindaweni zeziqongweni, kanye nokwelula izimfunda ezikhona ezinchwebezela ngenxa yokufunza noma ukwakhiwa okukhona okunganele. Imisebenzi yokwakha efana nezikebhe zezimoto nezokuhamba, ukwakhiwa kwedamu nokuvuselela, ukuthuthukiswa kwezindlu ezisemathafeni, kanye nokuvikelwa kwezindawo zezinsiza kuvame ukufaka izinhlelo zokugcina ze-micropile. Lezi zinhlelo zikhombisa ubaluleka ikakhulukazi ezindaweni ezi- seismic lapho ukwanda kokumelana nezimpande kuqinisa ukusebenza ngokumelene nesimo sokunyakaza komhlaba okudonsela ukuwa kwezakhiwo. Indlela ye-micropile yokugcina izintaba inikeza izinzuzo ezincintisanayo ngokwenza ukuthuthukiswa ezindaweni ezazingenasolwazi ngaphambili, ngenkathi kunganciphisi umthelela wokumba nokusetshenziswa komhlaba. Abakhi bangaguqula ubude be-pile, isikhala, kanye nokukhuphuka ukuze baphendule kumaphrofayela omhlabathi athile kanye nezinqubo zokuhwa ezitholwe ngokuhlinzekwa kwegeotechnical nasezikhombeni. Le ndlela yokubambisana, okuxhunywe nokukwazi ukwenza umsebenzi ezimweni zokusebenza eziyinkinga nezikhala ezingakwazi ukuvinjwa kwamanye ama-solutions okup foundation, ithuthukise imibhobho ye-micropile njengendlela ethokozisayo yokwenza umhlaba phakathi kwezikhalazo zezobuchwepheshe nezokwakha eziphezulu zemikhankaso yokwakha ezijulile nezokugcina izintaba.
Ishotcrete, noma okhiye ozoshaywa, kuyindlela ethile yokusebenza yokuletha ikhonkrithi ngezemishini ezisebenza ngengcindezi noma zisebenzisa amanzi ngokweqile emathini nasemashalofini, edala ukusimama okuphezulu nokwesekwa kwesakhiwo emaphaketheni ajulile nezinhlelo ze-geotechnical engineering. Le ndlela ibandakanya ukuphoqa ingxube ye-concrete esheshayo ebusweni bezwe obukhona, kumafaka omhlaba, noma ezakhiweni ukuze kwakhiwe ungqimba lokuvikela nelokuthwala imithwalo. Ngokwalesi simo sokuhamba phambili nokwakhiwa kwemifantu, ishotcrete inezinhloso eziningi ezibalulekile: iyasuswa amasiko angalungile, iqinisa amafomu e-geological aqinile, ikhiqiza imithwalo emihle noma emalungwini emigedeni, futhi ihlinzeka ngokulungiswa kwembonakalo emhlabeni ngesikhathi sokwakhiwa kwezakhiwo ze-pile foundation. Le ndlela ibalulekile kakhulu ezindaweni ze-geotechnical ezinzima lapho izindlela zokwakhiwa kanye nezindlela zokusekela umhlaba zikhombisa ukuba zingasebenzi, ezingasebenzi kahle, noma zibe sezingeni eliphezulu, okuwenza uhlelo oluphumelelayo kwezokwakha amapulangwe ajulile. Izindlela eziyinhloko zokusebenzisa ishotcrete ezisetshenziswa kwezokwakha izisekelo zifaka phakathi ukuhluza umswakama, lapho i-cement nezigaba zixutshwa endaweni yokuphakela ngamanzi, kanye ne-wet-mix spraying, lapho ikhonkrithi esheshayo iphefumulwa endaweni yokuphakela futhi iphonswe ngejubane eliphezulu. Ochwepheshe bezisekelo ejulile bavame ukusebenzisa ishotcrete ukuxhasa odongeni bemikhondo ngesikhathi sokubhoboza nokushaya amaphostela, ikakhulukazi ezindaweni ezibuthakathaka noma emhlabeni onamanzi lapho i-casing ejwayelekile ingasebenza kahle noma ibiza kakhulu. Ukukhetha imishini kuxhomeke ezimo ezithile zephrojekthi: abashisi nomshini wokuhluza uphuhlisela ikhonkrithi, kuyilapho izindawo zokuphakela ziqondisa ubunjiniyela bokuhluza nezikhala. Iziqinisekiso zomhlaba ezidinga ukuhunyushwa kwe-sprayed concrete zihlala zisukela emhlabathini ophezulu ophuphuma, kuya emanzini alahlekile odongeni oludinga usizo, kuya emsamo wezigaba ez混合 ezihlangana phakathi nokuqhubeka kokumba okujulile. Le ndlela ibalulekile ezinqubweni zokwakha, lapho izisekelo ezikhona zidinga ukuqiniswa noma ukuncishiswa, nasezinhlelweni zokwakha eziphansi ezihlanganisa ukwesekwa kwe-diaphragm wall nokulungiswa kwesikhathi eside ngaphambi kokufakwa kwezinto ezimnyama. Izicelo emaphaketheni ajulile zifaka phakathi ukusimama kwezintaba ezithintekayo ukuze kwakhiwe izisekelo, ukuqinisa izindawo ezithambile eziseduze ne-piles enkulu noma amahube, nokwakha ama-layers ama-permeable noma ayi-impermeable ukuze kulawulwe ukungena kwamanzi ngesikhathi sokwakhiwa kwezisekelo. Ishotcrete ivame ukuhlanganiswa nezinhlelo zokufaka i-grouting nezindlela zokwakha umhlabathi ezifana nokunamathisela umhlabathi nokufakwa kwe-micropile, ukudala izinhlelo zokuthuthukisa umhlaba ezihlanganisiwe ezifeza amandla okufaka afanele nokulawulwa kwe-zbokuphumula. Isivinini sokusebenzisa, ukuhamba kahle kokuhambisana nezimo zomhlaba ezishintshashintshayo, kanye nekhono lokufinyelela ekunciphiseni kwesurface yesikhathi eside kahle kwenza ishotcrete ibe yinhle kakhulu ezivumelwaneni zezakhiwo ezibhuntsha isikhathi. Abasebenzi abanolwazi, ukuhlinzekwa kwemishini okufanele, kanye nokulawulwa kwekhwalithi yokugcwalisa ikhonkrithi esheshayo kanye nokuqina kubalulekile ekufezeni izindinganiso zokwakha, ikakhulu lapho i-shotcrete iba yingxenye ewumgangatho wesekelo sokwesekwa kwezakhiwo. Uma kucatshangelwa kahle futhi kufezwa kahle ngokuhlola emhlabeni futhi ukwakhiwa, ishotcrete imelele isixazululo esifanelekile sokuxhasa izimo ezinzima ze-geotechnical nekuphuthuma kokwakhiwa kwezindonga ezijulile ezindaweni ezinzima zomhlaba.
Ukuqiniswa kwe-geosynthetic kuyindlela ebalulekile yokuzinza komhlaba esetshenziswa ukuze kuthuthukiswe amandla okuphatha nokuzinza kwezendlalelo zomhlaba kumaphrojekthi wezimpande ezijulile nasemisebenzini yomhlaba. Le ndlela ihilela ukusatshalaliswa kwempahla ebhalwe phansi njengama-geogrids, ama-geotextiles, ama-geocells, kanye nama-geomembranes ngaphakathi kwezakhi zesihlabathi ukuze kuthuthukiswe ukusatshalaliswa komthwalo, kuncishiswe ukuwa, futhi kuvinjwe ukuhamba komhlaba ngokujula. Ukusetshenziswa kwe-geosynthetics kuphendula ezintweni ezithile eziphukile zomhlaba wemvelo, ikakhulukazi ezindaweni ezinomhlaba ophansi, ama-clays ansimbi, noma izinto zebhande ezilula ezingakwazi ukujabulisa amandla aphakeme adingekayo. Ngokuqinisa umxube womhlaba, lezi zimpahla zakha uhlelo lwezinto ezihlanganisiwe olukhulisa kakhulu amandla okuphatha kanye nekhwalithi yesakhiwo somhlaba, okwenza kube nezindleko eziphansi ukuba kwakhiwe ezindaweni ezazingafaneleki kahle noma ezinzima. Ukusebenzisana kokuqiniswa kwe-geosynthetic kuhilela izindlela eziningi ezikhethekile ezakhelwe izimo zomhlaba ezithile zephrojekthi kanye nezidingo zesakhiwo. Ama-geotextiles asebenza njengemizila yokuhlukanisa nokuqinisekiswa, avimbela ukuhamba komhlaba okuncane ngenkathi kugcinwa ukuqina kwamanzi. Ama-geogrids, anombono wendawo ovulekile, anikeza ukuqina komhlaba okuqondile ngokuvimbela ukuhamba komhlaba ngokujula nokusabalalisa imithwalo egxilile ezindawana ezibanzi zomhlaba. Ama-geocells asebenza njengohlelo oluncane lwezinto ezintathu ezivimbela ukuhlanganiswa kwezinto kanye nokuhamba komhlaba, okuhlanganisa kahle ekwakhiweni kwe-emankment nasekuphakanyeni izimpande ezinzima. Ukukhethwa kwefomu lempahla, usayizi we-aperture, amandla okudonsa, kanye nobude bokufaka kuncike ekuhlaziyweni kwemekhanika yomhlaba, izimo zomthwalo ezilindelekile, kanye nezimo zemvelo. Imishini evamile esetshenziswa ifaka ama-vibro-compactors kanye nama-plate compactors ukuze kuqinisekiswe ukufakwa kahle nokuhlanganiswa kwemithwalo phezu kwezendlalelo ze-geosynthetic, kanye ne-cranes ezihambayo kanye nezihambisi zokufaka izinto ezindaweni zomhlaba. Ukuqiniswa kwe-geosynthetic kufakwa ezimeni ezahlukene ze-geotechnical lapho ukuthuthukiswa komhlaba okujwayelekile kutholakala kungenanele noma kuphansi kwezindleko. Kumaphrojekthi wezimpande ezijulile, lezi zimpahla zisetshenziselwa ngaphansi kwezindonga ze-pile namafutha asabalalayo ukuze kuthuthukiswe ukusatshalaliswa komthwalo futhi kuncishiswe ukuwa okuhlukeneyo. Ekukhiqizeni i-emankment phezu kwemithombo ethambile, ama-geogrids anikeza ukusiza okuqhakazile kanye nezinga, kunciphisa ingozi yokwehlisa ukuhlala nokwenziwa kwemisebenzi ye-emankment. Ukuqina komgwaqo nokuvikela imizila ye-railway kudlula kakhulu ezindleleni ezihambelanayo ze-geotextile-geogrid ezihlukanisa izinto zomgwaqo, ziqhubekisela phambili imithwalo ye-wheels, futhi zwandise impilo yokusebenza ye-pavement. Ukuqiniswa kwezindlebe kanye nokuvikela emiphakathini kuvuna ama-geocells kanye nama-geotextiles ukuqinisa iziQhingi eziphakeme futhi kuvinjeze ukuhamba kombhobho. Ngaphezu kwalokho, izixazululo ze-geosynthetic ziphendula ukuthuthukiswa komhlaba ezindaweni ezibhekelela ukudilizwa, ezinamandla aphansi, kanye nezimo zomhlaba eziyinkinga lapho izindlela ezijwayelekile zezimfundamakhwela zibhekana nezinkinga, kugcina kwehlisiwe izindleko zephrojekthi nomthelela wemvelo ngenkathi kuthuthukiswa ukusebenza kwesakhiwo eside nokuphepha.
I-Vibroflotation iyindlela ekhethekile yokuthuthukiswa komhlabathi esebenziselwa kakhulu emaphrojekthini akhethiwe ezisekelweni ezijulile nasezobuchwepheshe bomhlaba ukuze kukhuphuke amandla okuhamba nokuzinza kwezihlabathi ezithambile. Le ndlela yokwakha emhlabathini yedijithali isebenzisa amandla okudlidliza aphezulu ukuhlela amazakhi omhlabathi, kwehlisa ubudlelwano bokungena futhi kukhuphuke ubungako bezihlabathi, i-gravel, kanye namathuluzi alula afana nalawo. Le ndlela ibaluleke kakhulu kumaphrojekthi okwakha lapho izimo zomhlabathi zemvelo zinganele ukusekela izakhiwo ezinzima noma lapho ukulawula ukushintsha kubalulekile. I-Vibroflotation isebenza ngokufaka isibambo esisebenza ngokudlidliza, esaziwa ngokuthi i-vibratory pile hammer noma i-vibroflot, emhlabathini kuzindiza eziyinqaba ezivela ku-10 ukuya ngaphezulu kwama-100 amamitha. Iziphakamiso zenza amandla okuphazamiseka anqamule amazakhi omhlabathi ukuze avumele amazakhi omhlabathi ukuba abuyele endaweni ethambile, kuthuthukise kakhulu izakhiwo zomhlabathi ngaphandle kokudinga ukuhoxiswa noma ukususwa kwezinto. Inqubo ye-vibroflotation ngokuvamile ifaka ukufaka ithuluzi elinama-weight emhlabathini usebenzisa imishini eqhubekile noma izigebengu ezihambayo, lapho i-hammer yokudlidliza ibekelwe kumasipala akhethekile. Imishini ehamba phambili ye-vibratory inganikeza ama-frequency phakathi kuka-10 no-45 hertz enezinga lokucindezela le-5 kuya ku-15 millimeters, ukudala izimo ezinhle zokuthuthukiswa komhlabathi. Amanzi avame ukufakwa ngesikhathi senqubo ukuze kwehliswe ukuhlinzekwa phakathi kwamahlamvu omhlabathi futhi kwenze kube lula ukuhlela kabusha amazakhi, okwaziwa njengendlela yamanzi. Imishini esetshenziswa ku-vibroflotation ifaka ama-vibrators afakwe kumakhenikha, ama-vibroflotation akhethekile, nezicwecwana ezikhipha i-vibratory ezikwazi ukudala iziphakamiso ezilungiselelwe kahle. Udeep we- treatment uncike kuhlobo lomhlabathi, izimo zamanzi aphansi, kanye nemininingwane yemishini, lapho izinhlelo ze-crane-suspended vibratory zanika amandla ama-deep treatment angakaze afinyelelwe. Ukuqapha ikhwalithi kubalulekile, ngokuvamile kuhlanganisa ukuhlola ukuhlinzeka okujwayelekile, ukuhlola ukujula kwama-cone, kanye nokubheka ukuhamba ukuze kuqinisekiswe ukusebenza kahle kokuthuthukiswa komhlabathi nokuthi bakhiqizwe amandla okuthwala acace kakhulu. I-Vibroflotation isebenza kangcono emhlabathini angenamabhasi, kufaka phakathi izihlabathi, i-gravel eyisihlabathi, ne-gravel eyisihlabathi, futhi iba nekhono eliphansi emhlabathini onamakhilo aphezulu noma umhlanga. Le ndlela ibaluleke kakhulu kumaphrojekthi afaka izikhwama zokugcina ezinkulu, izikhungo zezimboni, ukufakwa kwemishini enzima, nezakhiwo ezidinga amandla okuthwala ahlukeneyo nokushintshwa okuncane. Izicelo zifaka izikhungo zokuthutha, izisekelo zezitezi ezisemanzini, ukunciphisa ukungena emikhakheni ye-seismic, kanye nokubuyisela emuva kwezimo ezinzima zomhlaba ngaphansi kwezinto ezikhona. Le ndlela ibaluleke kakhulu lapho ukufakwa kwepile ejulile kungabizi kahle noma lapho kudingeka ukuthi kube nokudlidliza okuncane kanye nosizi oluphansi uma kuqhathaniswa nalokhu okwakujwayelekile. I-Vibroflotation isetshenziswa futhi ngemva kwezinye izindlela zokuthuthukiswa komhlabathi futhi njengendlela yokulungiselela ngaphambi kokufaka ama-piles aphonsiwe noma adalwe endaweni. Ukubhekwa kwemvelo kwenza i-vibroflotation ibe nentshisekelo ngoba ikhulula isidingo sokufaka umhlabathi noma ukuhoxiswa okukhulu, kwehlisa ukulahleka kwezinto nasemathubeni okuhamba ngesikhathi sokuhlinzekwa kwezixazululo ezizinzile ezimweni ze-geotechnical ezinselele.
Ukucindezela okuguquguqukayo iyinsiza ethile yokuthuthukiswa komhlaba esetshenziswa ku-injiniyering ye-geotechnical ukuze kwandiswe ubukhulu nobudlwengu bemisila ebuthakathaka noma ethambile ngokusebenzisa imithwalo enamandla ephakanyisiwe, ngendlela elawulwayo, ephindaphindiwe. Le ndlela ibalulekile kakhulu ku-injiniyering yeziqhingi lapho imisila engaphansi idinga ukuqiniswa okuphawulekayo ngaphambi kokwakhiwa kwemigqa yokuphakamisa, izindawo ezijulile, noma izakhiwo ezinzima. Ukucindezela okuguquguqukayo kusebenzelana ngokuhkanisa izinsimbi ezinkulu kumaphuzu aphezulu, kudala ukuhwauka komhlaba nez موجة zokuphazamiseka ezinjengokwenza kusebenza kumasela, okuholela ekuhleleleni kabusha kwezingxenye zomhlaba ukuba zibe yizixazululo eziqinile. Le nqubo inciphisa ngokuphelele ukuphulukiswa komhlaba futhi ikhulisa imfuno ephumelelayo ngaphakathi kwenhlaka yomhlaba, okuholela ezimweni zokwakha ezithuthukile ezifana namandla okuphula akhula, ukunciphisa amathuba okwehla, nokukhulisa amandla okuthwala umthwalo. Le ndlela isetshenziswa kabanzi embonini yeziqhingi ezijulile ukuze kucutshungulwe izindawo zokwakha, izikhungo zezimboni, kanye neprojekthi zokwakha izinsiza ezikhethekile lapho iziqhingi ezijulile ezijwayelekile zingavumeli kahle noma zingabizi. Ukuqedwa kokucindezela okuguquguqukayo kudinga imishini ethile, ehlanganisa ama-crane elalelungelo aphezulu noma ama-derricks okuphakamisa nokukhulula imithwalo, imishini yokushaya imishayo, kanye nezinhlelo zokubheka ukuze kuhlolwe ukuphendula komhlaba. Imithwalo ehlukeneyo ukusuka ku-10 kuya ku-300 amagagasi ivamise ukuwela ukusuka kumaphuzu aphakathi kuka-5 kuya ku-40 aimitha, nezimo ezithile ziqukethwe ocwaningweni lwe-geotechnical nasekalkulesheni yokwakha. Izinsizakusebenza zokucindezela okuguquguqukayo zanamuhla zifaka ama-vibratory compactors, ahlinzeka ngamandla ahlakaniphile ahembe ukuze kuqinise izindawo ezithintekayo. Ama-hammer e-vibratory abekwe kumashumi okufaka imishayo noma emishinini ethile yokuthuthukiswa komhlaba athutha amandla amancane futhi angabambeki kalula, okwenza kube nokusebenza okuphezulu ekwelashweni kwezinyathelo zomhlaba ezihlukahlukene. Ukuhlola ngezikhathi zangempela usebenzisa ama-accelerometer nezitehweze zokuhlola zehlola i-engineer emkhakheni ukuze iqinisekise ukuthi izinga lokucindezelwa elihlaselwe selifinyelelwe ngaphambi kokuthi kuqhubeke nokwakhiwa kweziqhingi. Ukucindezela okuguquguqukayo kuveza ukusebenza kahle kakhulu emanzini angenamkhawulo ezifana nezihlahla, izihlahla ezivalekile, nezintambo, lapho ukuhlela kwezinhlaka kungenzeka kalula. Izicelo zihlanganisa ukuphulukiswa kwezimali eziphukile, ukwakheka kwezindawo ezibhalwe kahle, ukuvuselelwa kwezindawo zokutshala, ukuthuthukiswa komhlaba ngaphansi kwezindonga, kanye nokucutshungulwa kwezindawo zezimboni. Le ndlela ivame ukuhlanganiswa nezinye izindlela ze-geotechnical, okuhlanganisa ama-stone columns, i-vibro-replacement, nemishini yokushaya nokuphakamisa emisha, ukuze kudalwe izixazululo ezijulile zokuthuthukiswa komhlaba. Ku-context yokwakhiwa kwezinto ezijulile, ukucindezela okuguquguqukayo kunganciphisa ukuvuka okudingekayo kwemigqa ehambelanayo, kunciphise izinkinga ezithinta izakhiwo ezibucayi, futhi kuthuthukise ukwethembeka kokuhlanganiswa kwe-pile okubhalwe phansi. Ngokubhekana nezinkinga eziphansi ngokushesha, ukucindezela okuguquguqukayo kuvumela ukuklanywa kwezinto eziyinqaba ngokuphumelelayo, kunciphisa ingozi yokwehla kokwakha okukhona, futhi kuthuthukise ukusebenza kwesakhiwo isikhathi eside emaphandleni, ezokuhweba, nasezinhlelweni zezakhiwo zomphakathi.
Ukucindezela okuqondile kumelwa njengendlela eyisisekelo yokuthuthukiswa komhlabathi esetshenziselwa emihlanganweni ehlukahlukene ye-geotechnical kanye nobunjiniyela bezisekelo ukuze kuthuthukiswe izimo zomhlaba ngokusebenzisa ukusetyenziswa kokucindezela okuqondile kanye nengcindezi. Le ndlela yomsebenzi ibandakanya ukujolisa okuphumelelayo kwemithwalo yomhlabathi ukuze kuncishiswe izizinda, kukhuphuke amandla okubamba, futhi kuthuthukiswe khona yonke imisebenzi yokuthwala - lezi zinto ezibalulekile ekulungiseleleni izindawo zohlelo lwezisekelo ezijulile ezifana nokufaka izinsiza, izindonga ze-diaphragm, nezinye izakhiwo eziphakeme. Izindlela zokucindezela okuqondile zibalulekile kakhulu lapho izimo zomhlabathi zikhombisa ubunzima obuphansi bokuqala noma izakhiwo zokugcina ezikahle ezingase ziphazamise ubuqotho kanye nokuthwala okuphakade kokufakwa kwezisekelo. Umehluko oyinhloko phakathi kokucindezela okuqondile nezindlela zokukhukhumala ubandakanya ukuncika ekucindezelweni okuqhubekayo kunokuba kube ukungqubuzana okwenziwe ngezinto eziphathekayo ukuze kufinyelelwe ekujoliseni komhlaba. Ukucindezela okuqondile kusebenzisa imishini ekhethekile esindayo okufaka phakathi ama-roller aqondile, abacindezeli abashile, kanye nezindawo zokucindezela eziphuzi ezisebenzisayo amandla anembile okuhamba phansi ukuze ziqinisekise amasendlalelo emhlabathini nokwenza kube nemifino namathoni. Le ndlela ibonakala ikhululekile ezindaweni eziyinqaba, ezizindaweni ezisemthethweni, nakwezelwandle lapho ukuphathwa kwezinto eziphathekayo kubalulekile ukuze kuvinjezelwe ukuphazamiseka kwezinto ezikwi-ndaweni ezithile noma emisebenzini ekhona. Onjiniyela bakhetha izindlela zokucindezela okuqondile ngokusekelwe ekuhlukanisweni komhlabathi, okuqukethwe kwamanzi, kanye nezinga elidingekayo lokuhlola - lezi zinto zibonakalayo zinomthelela ngqo ekukhetheni kwemishini yokucindezela kanye nezindlela zokusebenza. Ukucindezela okuqondile kufinyelela emiphumeleni emihle ekuhlinzekweni kwe-subgrade, ekwakhiweni kwe-embankment, nasekuzinzeni kwezingxenye zomhlabathi ezinamandla okuphuthumako lapho ukufaniswa kwezwa kuhlale kusemqoka ekwakhiweni kwezisekelo. Izicelo zokucindezela okuqondile ziqhubeka kulesi sikhungo sobunjiniyela bezisekelo nezimboni zokwakha ezibanzi. Ukuthwala izindawo ngaphambi kokufaka izinsiza kunciphisa ama-differentials wokuhlala futhi kuthuthukisa ukusatshalaliswa komthwalo phakathi nezinsizakalo zokudlidliza. I-engineering ye-landfill, ukuvulwa kwemizila, ama-embankments ezitimela, nezinhlelo zezimboni zonke zithola inzuzo ekuthuthukiseni amandla okubamba kanye nokunciphisa ukuthwala ngokuhambisana phakathi nezinhlelo zokucindezela okuqondile ezanele. Ezimweni zomhlabathi ezinamandla - i-silt, i-clay, kanye nemithonyama engafakiwe kakhulu - ukucindezela okuqondile kusebenza njengesixazululo sokuthuthukiswa komhlabathi esiyinkanyezi uma kuqhathaniswa nezindlela zokuhlaziya ezinzima. Le ndlela iqhakambisa ukuhlinzekwa kwezakhiwo zezakhiwo ezinzima zokwakha ngokwakha izici zomhlaba ezilungile ngaphambi kokufaka izinsiza, ama-micro-piling, noma ezinye izindlela ezikhethekile zokufaka izisekelo ziqale. Ukuqedwa kwezinsizakalo zokucindezela okuqondile kudinga uchwepheshe, ukuchaza elastiki ze- site, ukusho izinga lokuhlola elikhethwe ngokwehlukaniswa komhlabathi kanye nezinhlelo zokwakha, kanye nokuqinisekiswa kokwaziswa okuphephile ngokuqhubekayo ngokuhlola in-situ density. Abaphathi bemishini kufanele baqonde ukuphathwa kwe-cumpaction phakathi kwezinhlobo ezahlukene zomhlabathi nezimo zamanzi ukuze kube nezimbangela ezihambisanayo eziphelele endaweni yomsebenzi. Izinkontileka zokucindezela okuqondile zivame ukuhlanganiswa nezinhlelo zokuthuthukiswa komhlaba ezibanzi nezinhlelo zokulungisa izisekelo, okwenza ukuba kube nengxoxo phakathi kwamaphoyisa wemishini, abeluleki bezinhlaka ze-geotechnical, kanye nabakhi bezisekelo kuphumelele ngempumelelo yomsebenzi kanye nokuhlangabezana nezimfuneko zokwakhiwa.
Ukucindezela Okusheshayo Kwe-Impact (RIC) yindlela ethuthukisiwe yokuthuthukiswa komhlaba esebenzisa ukucindezela okujolile okuphathelene nokwandisa ubukhulu bomhlaba nokuqina kokwakha ezindaweni eziphakeme nezisezingeni eliphakathi. Le ndlela ibandakanya ukwehla kokwakha i-tamper yesikhumba esinzima noma isisindo esivela phezulu okuhlinzekwe ngaphambili phezu komhlaba ngendlela ehlelekile, kudala amandla amakhulu okuthintana okwenza umhlabathi ophakame noma ophumayo. Le nqubo ikhiqiza ama-wave okucindezela adlula phansi nakwasogwini emasimini omhlaba, ngaleyo ndlela ithuthukisa ubukhulu bomhlaba futhi yehlisa amathuba okuhlukumezeka. I-RIC ihluka ekucindezeleni okujwayelekile ngokuhlinzeka ngamandla okuthinta ahlukaniswe kahle angangena ngaphakathi ezicini zomhlaba ezinzima, ezenza ukuba ibe nomphumela omuhle ekulungiseni izikhala ezivulekile, umhlabathi ophungukayo, nezindawo ezinezakhiwo ezahlukahlukene zomhlaba ezijwayelekile ezakheni izisekelo ezijulile. Indlela nezinsiza zokuhlola ze-RIC zinciphisa kumasayithi angempela we-geotechnical nezidingo zephrojekthi. Izinsiza ezihambayo ezifana namahhambo evibratory afakwe kuzikhukhula, imishini ye-RIC ekhethekile enezinhlelo zokwehla ze-hydraulic, noma imishini yokucindezela eyakhiwe ngenjongo ethile, zenza amandla okuthinta edingekayo ukuze kuhlaliswe umhlabathi. Abaphathi balawula ukuhamba kokuthinta, ukuphakama kokwehla, nenani lokudlula ukuze bafinyelele ezicini ezithile zokucindezela eziqinisekiswe ngama-penetrometers we-dynamic cone, izivivinyo zokushintsha i-sand, noma izibalo zokubamba. Le ndlela ikhethekile ekulungiseleleni izinkanyezi zokufaka amapayipi amakhulu, izisekelo ze-mat, nezakhiwo ezingaphansi komhlaba lapho ukufaneleka kokubamba kuyingxenye ebalulekile. Izinhlelo ze-RIC zingakwazi ukuhlinzeka ngezindawo zomhlaba eziyinqaba ukusuka ku-3 kuya ku-15 amamitha kuye ngamalungiselelo wezinsiza namapharamitha omhlaba, zenza kube neqhaza elihle ekwakhiweni kwezindawo eziluhlaza nezinhlelo zokulungisa izindawo ezinhlelwe ngokuphelele. Ukucindezela Okusheshayo Kwe-Impact kuhlangabezana kahle nezinqwaba zomhlaba ezihlulekile, izingqimba ze-clay ezingafunwa, ukugcwalisa izinhlaka, neprofiling yomhlaba exubene ethumele izinselelo zokubamba. Iphrojekthi yokwakha emavulandleleni wokumba, ezindaweni ezitshayelwe isixazululo, nasemiphakathini enezimo zomhlaba ezinkulu ibonelwa kakhulu ekwelapheni kwe-RIC ngaphambi kokufaka izisekelo ezijulile. Le ndlela yehlisa ingozi yokuhlukumezeka, ithuthukisa izici zokubamba kwemithwalo, futhi ingaqeda isidingo sokufaka amapayipi ajulile noma ukuxuba umhlaba okuningi ezinhlelweni eziningi. Izinzuzo zemvelo zihlanganisa ukunciphisa ukuhanjiswa kokudlidliza uma kuqhathaniswa nokucindezela okukhulu, ukunciphisa ukwakhiwa kwezwi, nokugcina ukuzinza kwezinto eziseduze. Kubakhi bezisekelo ezijulile kanye nezinsizakusebenza ze-geotechnical, i-RIC ihlinzeka ngothola impilo yomhlaba okuthuthukisa ngokushesha izikhathi zephrojekthi ngokuvumela ukwakhiwa kwezisekelo ngokushesha ezindaweni ezaziningi zikhathalela. Le ndlela ihlanganiswa kalula kumsebenzi wokulungisa umhlaba ngaphambi kokumba, izinhlelo zokuhlola ukucindezela, kanye nemibhalo yokubamba okudingekayo ezinhlelweni zokwakha ezinzima, okusenza sibe iyithuluzi elibalulekile kwi-engineering yethu yokwakha ngezisekelo ezijulile nakwezimiso zokulungisa izinhlelo.
Ubuchwepheshe be-Vertical Drain (PVD) bumele indlela ebalulekile yokuzinza komhlaba kwezakhiwo zesimanje ze-geotechnical engineering, ikakhulukazi emaphrojeni aqukethe umhlaba ophumile, izisekelo ezibuthakathaka, kanye nezimo zendawo ezinzima. Le ndlela yokuxhaphaza umhlaba isheshayo ifaka ukufakwa kwemigudu yokukhipha amanzi ngokuqondile phakathi kwezindawo zomhlaba ezinzima, ihlisa kakhulu isikhathi esidingekayo sokuhlanganiswa kokuhlala futhi ivumela amaphrojekthi wokwakha ukuthi aqhube ezindaweni ezazingezelelwe kahle ngaphambili. Ngokwakha imigudu yokukhipha amanzi eqondile ukusuka ezingeni elijulile lomhlaba kuya phezulu, izinhlelo ze-PVD zenza kube lula ukususa ingcindezi yamanzi ephepheni ezindaweni eziphathekayo ezifana ne-clay, i-silt, kanye nezindawo ezihlanganisiwe. Le nqubo ibalulekile ekulungiseleleni izisekelo zomhlaba lapho ukuhlanganiswa kwemvelo kungathatha izinyanga noma iminyaka, kwenza kube yindlela eyisisekelo ku-engineering yeziqalo ezisodwa nezokulungiselela. Inqubo yokufaka i-PVD ivamise ukufaka imishini yokubhola ethize kanye nemishini yokufaka efaka imigudu yokukhipha amanzi eyenziwe ngopulasitiki nxazonke ezifanele throughout i-profil yomhlaba ethintwe. Lezi zigubhu ezihlanganisiwe, ezakhiwe nge-core yesimanje kanye ne-wrapper ye-filitha, zifakwa ngokuhlanganyela phakathi kwezindawo zomhlaba ezibuthakathaka zisebenzisa amathuluzi okuhlinzeka, amahhashi e-vibratory, noma imishini yokubhola ethize eyenzelwe umsebenzi wokuthuthukisa umhlaba. Uma seziqediwe, imithwalo ye-surcharge noma okokugcwalisa okwengeziwe kufakwa phezulu, kudala ingcindezi ekhuphula amanzi angaphandle emehlweni omkhiqizo. Ukuxubha kwalezi zindlela zokukhipha amanzi kanye nokulayisha i-surcharge kungadonsa futhi kuqinise umhlaba onenkinga ezinsukwini ezingu-2 kokhokhoze ukubonelela ukwakhiwa okubhaliwe kwemigudu, izindawo eziphakeme, kanye nezingqalasizinda ezimnandi ezindaweni ezinzima. Izicelo ze-PVD systems zifaka izimo eziningi zokwakha izisekelo ezijulile lapho izimo zomhlaba eziyinkinga zishaya isimo sezakhiwo. Amaphrojekthi aqukethe izindlela zomubhoshongo, izindawo zokwakha zemigwaqo, izikhungo zomkhiqizi, nezisekelo zezindawo ezinqunywe kakhulu ezivame ukusebenzisa ubuchwepheshe be-PVD ukuhlinzekela izindawo ezinamathambo aqinile, amaphrinta, kanye nezindawo zomhlaba ezinokucindezelwa kakhulu. Le ndlela ibalulekile ezindaweni zejolise emanzini kanye nezindawo ezithathiwe lapho izigaba ezinzima zomhlaba zidinga ukuthuthukiswa okusheshayo. Ngaphezu kwalokho, ukufakwa kwe-PVD kuvame ukuhlinzekwa ngezindlela ezihlukahlukene zokuzinza komhlaba njengezikhumbuzo zamatshali, i-vibro-replacement, noma izinto eziphansi ezilawulwayo ukuze kuqinisekiswe ukulungiswa okuphelele kwesayithi kumkhakha wezenzakalo ezikhethekile. Abasebenzi bemishini kanye nezinkampani ze-geotechnical zithembele kumishini yokubhola ethuthukisiwe, amathuluzi okuhlinzeka, kanye nezinhlelo zokubheka ukuze kuqinisekiswe ukufaneleka kwe-PVD, ukuphakama kokufaka, kanye nokufaka imithwalo, okwenza kube insiza ebalulekile emnothweni wezisekelo ezijulile kanye nomkhakha wezithuthukisi ezibalulekile.
I-Micropiling iyindlela ethuthukile yokwakha izisekelo ezijulile ezisetshenziswa ukuze kuqinise, kusekelwe, futhi kuzinge izakhiwo ezikhona kanye nezimo zomhlaba ezinzima. Ngokwehlukana nezindlela ezijwayelekile zokuphonsa, ama-micropiles ayizakhi ze-architecture ezinde, ezibambe umthwalo omkhulu ezihlanganisa izimiso zamaforamu eziphonsa nezinsika ezinamacembe. Le mpendulo entsha yokwakha ijwayele ukukhiqizwa komfaniswano wesinyathelo, insimbi yangaphakathi yokwakha noma igebe, kanye ne-cement grout yokugcwalisa, kudala isakhiwo esihlangene esingasekela umthwalo omkhulu ezindaweni ezincane. Ama-micropiles abalulekile ikakhulu ezindaweni zasemadolobheni, ezakhiwo zomlando, nasemakhaya aneziqedi ezinzima lapho izinto zokumba ezijwayelekile zingakwazi ukusebenza kahle. Inqubo ye-micropiling ibandakanya ukufaka ama-shaft amancane abunjiwe, ejwayele ukuphuma phakathi kokuphuma okungama-150mm kuya kwama-300mm, ukuya ezindaweni ezijulile ezivame ukwedlula amamitha angama-40 kuye ngezimfuneko zephrojekthi nemimo ye-geological. Ukufakwa kwama-micropiles kusebenzisa amathuluzi akhethekile wokumba nokugcwalisa aklanyelwe umsebenzi owuchwepheshe ezindaweni eziyinqaba. Abakhangisi be-micropiling basebenzisa ama-drilling rigs aphendukayo noma aphakemeyo afakwe ezisekelweni ezisindayo noma ezikhokhelwayo kumashayeli amancane, ahlanganiswe nezinhlelo zokugcwalisa ezisebenza ngocingo oluphezulu ezikwazi ukuhlinzeka nge-grout esekelwe ku-cement ngaphansi kwemithwalo elawulwayo. indlela yokugcwalisa ivamise ukuhlanganisa izindlela eziningi zokugcwalisa noma zokugcina izinto ezihlangana ukuze kuqhutshekwe kahle ukuphuculwa komhlaba nomthwalo wezimali. Ama-micropiles asebenza ngezinqubo zokudluliswa komthwalo ezahlukene ezihlanganisa ukungena emgqeni wepipe, umthwalo oqondile ekugcineni kwepiki, kanye nokubanjwa komhlaba ngemigqa ye-cement efinyelelwe ngokucindezela. Lezi zici zokwakha zikhombisa ukusebenza kahle kakhulu emhlabeni wama-granular, kumagquma aphukile, nasemigodini ehlanganisiwe lapho ama-piles avame ukuba nezinkinga zobuchwepheshe noma zokuhlala. Izicelo ze-micropiling ziqukethe izimo eziningi zokwakha okuhlanganisa ukuqinisa izakhiwo ezikhona, ukuqinisa izikhumbuzo zomlando nezakhiwo ezibhalwe phansi, ukuqinisa umhlaba kumaphrojekthi wokuma kwemithombo, nokweseka izisekelo zokwakha ezintsha eduze kwezinhlelo zomhlaba ezikhona. Le ndlela ibhekana nezimo zomhlaba eziyinqaba ezinjengokukhonjwa okuncane ngaphansi kwemigudu nemihume, umhlaba onezinkinga okufanele kube nokuphazamiseka okuncane, kanye nezindawo ezinzima zasemadolobheni eziseduze nezinsiza ezibucayi. Ukubuyekezwa kwe-micropile kuqinisa izisekelo ezingafanele, kufaka phakathi ukwanda komthwalo ozimele ngenxa yokulungiswa kwezakhiwo, futhi kusekela izidingo zokubuyekezwa kwezokwakha ezindaweni ezithintekile kakhulu. Ngaphezu kwalokho, i-micropiling ibonakala ihamba phambili ekuphuculeni umhlaba ezindaweni ezithambile ze-clay, ezindaweni ezine-silt, nasemaphaketheni athintekile ukudangele noma izinkinga zokuhamba phansi. Izicelo zesimanje ze-micropiling zihlala zifaka izinhlelo zokufaka i-resin, ama-micropiles agcwele i-resin, nezinhlelo ze-micropile eziphoshelwe nge-grout ezithuthukisa nokubambisana komthwalo kanye nezici zokuzinza komhlaba, kwenza le ndlela yokuphonsa ethuthukile ibaluleke kakhulu kubunjiniyela bezisekelo ezijulile zanamuhla.
I-Vibro replacement yindlela eqinisekisiwe yokuthuthukisa umhlaba esetshenziselwa ukwenza ngcono izimo zomsamo nokwandisa amandla okubamba emhlabathini ongenangqondo noma ophukile. Le ndlela ibandakanya ukusetshenziswa okukhululekile kwemishini yokuvibritha ukuze kususwe izinto zomhlaba ezingezinhle futhi zishintshwe ngezinsika zetshe ezihlongozwayo noma izinto ezingaqinile, kuthuthukiswe kakhulu izimpawu ze-geotechnical zomhlaba ongaphansi. Le ndlela ikakhulukazi iyasebenza ekubhekaneni nezimo zomhlaba ezinzima ezifana ne-clays ezithambile, izindawo zomhlaba ezinemitshalo, ama-silt aphukile, kanye nezinye izinto ezinzima ezitholakala ezinhlanganweni zokwakha. I-Vibro replacement idala izindawo ezithwala umthwalo ezidingeka ukuze zisakaze umthwalo wezokwakha ngokukhululeka emhlabathini ojulile, ophumelelayo, okwenza kube ukhetho olwakha izindleko eziphansi kunezixazululo zokukhipha ngokuphelele noma zokubeka izinsika ezijulile ezinhlelweni eziningi. Inqubo ye-vibro replacement isebenzisa ama-probes noma ama-vibrator akhethekile abekwe kumishini esindayo, asebenza ngama-frequency aphezulu ukuze aqinise futhi ahlanganise izinto ezishintshiwe njengoba zingena emhlabathini. Umsebenzi we-vibratory uhlehlisa umhlaba ozungezile ngasikhathi sinye futhi uqinisela izinsika zetshe eziqhamukayo, kudaleke uhlelo lomhlaba olwaziwa kahle ngezimpawu ezithuthukisiwe. Le ndlela ilungele kakhulu amaphrojekthi anezithiyo zokufinyelela noma ukuhamba kwaphezulu okuncane, njengoba imishini ingafakwa kumakhasi ezokwakha ajwayelekile noma emishini yokubhola. Izinto ezishintshwayo, ngokuvamile amakhonkwane etshe angaphakathi noma i-gravel ecrushed, zihlala zithunyelwa kwi-probe njengoba ingena ngokujula, kube ne-vibration eqinisekisa ukuhlanganiswa nokuhlobisa kahle kwezithako. Izinsika zetshe eziqhamukayo noma izindawo eziphakanyisiwe zisebenza njengezici ezithwala umthwalo ezidlulisa umthwalo wezokwakha ngempumelelo ngokusebenzisa ama-layer omhlaba anamanzi, kunciphisa ukwehluka kokuhlala nokuthuthukisa ukusebenza kwezakhiwo ngokujiya. I-Vibro replacement ithola ukusetshenziswa okukhulu ekwakhiweni kwezakhiwo, ezikhungweni zezimboni, emakhanda ezindaweni zokuhamba, nasezindaweni ezikude ezakhelwe emithinjeni eluhlaza. Ikakhulukazi ibalulekile kumaphrojekthi okubuyisela emuva, ukulungiswa kwezindawo ezingcoliswe, kanye nokuthuthukiswa kwamadolobha lapho izimo ezingaphansi kwephansi zihluleka noma zingaguquki. Le ndlela ivamise ukusetshenziswa ngasikhathi sinye nezinye izindlela zokuthuthukisa umhlaba ezifana nokuqinisa kwe-vibratory, ukuvuselelwa komhlaba, kanye nezinhlelo zokubhida ukuze kudaleke izixazululo eziphelele zokwakha. Ukuba nekhono kwezindleko nekhono le-vibro replacement kwenza kube ukukhetha okuthandwa kakhulu lapho kubhekelwa ama-layer omhlaba aphukile angase adinge izinyathelo zokubhekela eziphakeme nezindleko ezibizayo. Ongcweti nabakhiqizi bayakuthanda lokhu kubhekana nezizathu eziyisisekelo zokuhlala nezinkinga zamandla okubamba ngenkathi kugcinwa ubuqotho bezakhiwo ezikhona ezindaweni ezixakile. Ukujula kwale ndlela kuvumela ukwenziwa ngokwezimo ezithile zesayithi, ama-profiles omhlaba, kanye nezidingo zomthwalo, okwenza kube isixazululo esiguquguqukayo semiphumela ye-geotechnical ehlukahlukene emkhakheni wokwakhiwa kwezakhiwo ezijulile nezomhlaba.
Ukukhipha amanzi emhlabeni kuyinqubo ebalulekile kwi-geotechnical engineering ekhipha amanzi enhlabathi ezindaweni zokwakha, indawo zokuqhwashisa, kanye nezindawo zokwakha izisekelo ukuze kudalwe izimo eziqinisekisiwe nezomile ezidingekayo ukuze kufakwe izisekelo ezijulile, ukusebenza kokushaya ama-pile, kanye nezinqubo zokuvuselela umhlabathi. Emikhakheni yokwakha ngaphansi, ikakhulukazi leyo ehileleka ezisekelweni ezijulile, ekushayeni ama-pile, kanye nomsebenzi wokuthuthukisa umhlaba, ukulawula amazinga amanzi emhlabathini kubalulekile ukuze kugcinwe ukuzinza komhlabathi, kuvinjwe ukuhluka komhlaba, kuncishiswe ingcindezi ye-hydrostatic, futhi kuqinisekiswe izindawo eziphephile zokusebenza zabasebenzi nezinsiza. Ukukhipha amanzi kubaluleke kakhulu emathafeni anamanzi, ezindaweni ezineziqongo zokunisela, nasezindaweni lapho imvula noma ukusondela emanzini aphansi kungalimaza ikhwalithi yokwakha izisekelo kanye nokwaziswa kwezakhiwo. Inqubo yokukhipha amanzi isebenzisa izindlela ezahlukene nezindlela eziklama ngokuya ngezimo zokuhamba kwamanzi ezithile, izici zomhlabathi, kanye nezidingo zephrojekthi. Izindlela ezijwayelekile zokukhipha amanzi zifaka phakathi izinhlelo ze-wellpoint, ezisebenzisa izithombe ezibhalwe emzileni ukuze zinciphise kancane isithombe samanzi; amawells wokukhipha amanzi ajulile akhipha amanzi emhlabathini ephakamiswe noma endaweni ephakathi; ukusika, okubamba futhi kukhiphe amanzi kusuka ezinqolobaneni zokwakha kusetshenziswa amapompo e-centrifugal noma e-positive displacement; nezinhlelo zamawell ezikhipha amanzi ezisebenza ezijulile. Lezi zindlela zivame ukuhlanganiswa nezindonga zokugcina, izindonga ze-diaphragm, noma ama-curtains ama-sheet pile ukuze kulawulwe ukugeleza kwamanzi nokunciphisa ukuhamba kwamanzi emakhaya okwakha. Ukukhetha impahla yokukhipha amanzi kuncike ezintweni ezilindelekile zamavolumu amanzi, izinga lokuphakela, isikhathi somsebenzi, kanye nezimo zokuhamba kwamanzi, ngamapompo atholakala ngaphansi komhlaba, amapompo e-turbine, kanye namapompo akhethekile e-grouting nakwi-flushing anikela ngempumelelo ethembekile ezinhlelweni ezahlukene zokwakha izisekelo. Ukusebenza kokukhipha amanzi kubalulekile emaphrojekthi okushaya ama-pile, ekuhloleni okwenziwe amakhi, ukufakwa kwezindonga ze-diaphragm, kanye nomsebenzi wokuhlanza okujulile lapho izimo zomhlaba ezigcwele amanzi zingavimbela ukusebenza okufanele kwezinsiza, kunciphise amandla okuthwala ama-pile, noma kusebenzise kahle ukusebenza kwezemvelo komhlaba. Emhlabathini owandisiwe njenge-clay nokuqhwa, ukukhipha amanzi kunciphisa ingcindezi yamanzi ezindaweni futhi kukhuphule amandla okuphikisana, kuthuthukisa ukuzinza nokuhlangana komhlabathi ezindaweni ezibekwe ama-pile. Kwemhlabathi ehlanganisayo efana nesand, ne-gravel, ukukhipha amanzi okusebenza kahle kuvinjwa ukuvuthwa, ukuvuthwa kwezimpushana, kanye nezimo zokuphakama ezisongela ukukhophuka kokwakha kanye nokusebenza kwezisekelo. Izicelo zibandakanya ukudalwa kwedolobha, ukuthuthukiswa kwezinhlelo zokuqhuba, izakhiwo zokupaka ezingaphansi, izisekelo zebhuloho, kanye nezikhungo zezimboni lapho ukulawulwa kwamanzi emhlabathini kuthinta ngqo uhlelo lwephrojekthi, ukusebenza kwezindleko, kanye nokuhambisana nezokuphepha. Ukuhola kahle ukukhipha amanzi kunciphisa imithelela emvelweni ngokuphuma okulawulwayo, ukufakwa kwe-sediment, kanye nezinqubo zokwelapha amanzi ezihambisana nezidingo zokuvikelwa kwamanzi surface nokuphinda kuhlangane neziqhingi.
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