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.
Amarigging wokubhola angaphakathi okuphakeme asheshisa imishini ethile yokufaka ama-anchors omphakathi, ama-anchors ezinsalela, kanye nezintambo zompompo ezisiza ukuqinisa izitezi ezingazinzile nokuvimbela izikhukhula ezinzima ezimeni ze-geotechnical. Lezi zinhlelo zokubhola zibalulekile ezingxenyeni zedamu le-anchor ezisetshenziselwa ukulawula ingcindezi yomhlaba ebhange futhi ziqinise izindonga, phendula izidwaba ezibhakabhakeni, nasemathafeni endalo lapho izixazululo zomgodi ezijwayelekile zingafaneleki. Amarigging wokubhola angaphakathi aklanyelwe ukuvula imifantu enembile ezikhungweni ezibala—ngokuvamile ezilinganiselwa phakathi kwama-15 kuya kwama-45 degrees ngaphansi kokhulu—kuyi-strata ye-rock efanele noma izendlalu eziminyene ngaphansi kwesikhumba esingazinzile. Inqubo yokubhola idinga ama-rigs wokubhola ashisayo akhelwe ngama-heads e-percussion noma e-rotary-percussion angakwazi ukufaka abuqhaza kumakubhakabhaka ahlukene, izimpahla ezichotshozwe, nezithako eziqhubekayo ngenkathi zigcina ubuqotho bendlela nokuzinza kwemifantu. Lezi zinhlelo kumele zisebenze ezindaweni eziphakeme, ngokuvamile ezindaweni ezihlukumezayo ezilungiselelwe izakhiwo ezikhona, okwenza ukuhamba, ukwakhiwa kokuphakathi okujwayelekile, kanye nokulawula kahle kokuphakama okubalulekile. Ukwenziwa kobuchwepheshe bokubhola bangaphakathi kubandakanya izigaba eziningi ezilandelanayo ezibalulekile kumaphrojekthi okuthula izitezi. Ukwenda ukuqala kokubhola nokuhlola kwe-geotechnical kuthola izimo ezingaphansi komhlaba, kuthola izindawo ezifanele ze-anchor ezinomthwalo olungile nezindinganiso zokukhiqiza ze-rock. Uma izindawo ze-anchor ziqinisekisiwe, ukukhiqizwa kokubhola kuqhubeka nemifantu efakwe ikhefu noma ingekafakanga efanele ukufakwa kwe-anchor bar, ngokuvamile kusetshenziswe imifantu enobubanzi obungama-25-32mm bokubola be-soil anchors noma ama-45-75mm ama-rock anchors avuma izithako eziningi. Ukuhamba kwemvelo yokubhola—kungaba amanzi, i-bentonite slurry, noma izinxephezelo ezisekelwe kumphongolo—kuqinisekisa ubuqotho bemifantu, kukhipha izikhala, futhi kuqinisa ezindongeni zeforamu emigodleni ye-granular. Ama-rigs aphezulu afaka ukuhamba okuhlukile kokubhola, ukulungisa amandla okubhola, kanye nezinhlelo zokubheka ubude ezizenzekelayo eziqinisekisa izinga elihlangene lokungena nokuvimbela umonakalo wemishini ngenxa yokuguquka kwezimpahla ezimangalisayo noma kwezikhala. Izicelo zokubhola ngokuhambisana nezindawo ezahlukahlukene ze-geotechnical zifaka phakathi ukuqiniswa kwezimoto zokuhamba nezithuthi zomugqa, ukulungiswa kwezikhukhula ezindaweni eziphakeme, ukwakha izisekelo zezikhungo eziyingozi ngokuhamba kwezitezi, kanye nokwesekwa kokumba okujulile eduze kwezitezi ezingazinzile. Imisebenzi yokumba isebenzisa ukubhola okukhululekile ukuphatha ukujiya kwezitezi, ivimbela ukuhwa kwezigaba nezikhukhula eziyingozi kumarhwebi nomshini. Amaphrojekthi okwakha emadolobheni avame ukusebenzisa izindonga ze-anchor ezenziwe ngemifantu yokubhola ukuze kuqinise izindawo eziphakeme zokwakha, ikakhulukazi ezindaweni eziphakeme lapho ukulungisa izindawo zokwakha ezijwayelekile kudinga izindleko eziphezulu. Ukubhola okuphumelelayo kudinga izifundo ezinemininingwane, izinhlelo zokuhlola eziphakathi komhlaba, kanye nemithwalo yokubola ecalculated ngokususelwa ekuhloleni ukuhamba kwezitezi, izici zamandla ezithako nezinsalela, kanye nezimo ezilindelekile zomhlaba. Ukukhethwa kwemishini yokubhola kuncike ezinkambisweni zokuphakama ezifinyelelelekayo, izidingo zendawo ye-anchor—kujwayelekile phakathi kwama-15-50 mita—nezimo zezimali ezikhombisa ukuhamba kwezokubola nezindleko zophrojekthi.
Izinhlelo zokubhalansisa eziphezulu ziwumsebenzi ophambili wokwazi ukwakha umhlaba ezingeni elibalulekile kubaklami abaphatha izintaba eziphakeme, umhlaba ongazinzile, kanye nezidingo eziqinile zokugcinwa. Lezi zinhlelo zokubhalansisa zisebenzisa izintambo ezinamandla, izinsimbi, noma imijondolo ethwelethe ngesisindo esithile ukuze kunikezwe ukwesekwa okusebenzayo nokubambisana okwengeziwe ngokumelene nokunyakaza komhlaba nokuphuma komhlabathi. Izixhumanisi eziliphu zamadwala zisebenza ngokudlulisa izinsizakalo ezivela kumavala ayinqaba noma alilwelonke kumazinga aphumelele ezijulile ngaphakathi kweprofayili yomhlaba, kudala ibhalansi yomshini evikela amandla okuphakanyiswa nobuhlungu. Le ndlela yokubhalansisa ikakhulukazi isebenza kahle ezindaweni lapho izindonga zokugcina ezisebenza ngogwaja zibonakala zinganele, lapho isikhala sikhawulelwe, noma lapho izindleko zephrojekthi zikhangela izixazululo ezilula. Ingxenye yokubhalansisa iyahlukanisa lezi zinhlelo ezixhumanisayo eziphumuli, njengoba uxhumano olwamukelwe olulodwa luklama umhlaba ophumayo futhi lutholakala, kuholele ekusebenzeni okungcono ngaphansi kokuthwasa okujolile, ukuhamba, kanye nezimo zokuhlala isikhathi eside. Ukufakwa kwezinhlelo zokubhalansisa eziphezulu kuqala ngezigameko zokubhoboza ezinembile usebenzisa ama-rigs akhethekile wokubhoboza nezinsiza ezisezingeni eliphezulu ezilungiselelwe ukuphakama kwesixhumanisi nesimo. Abahlinzeki bokubhoboza izisekelo basebenzisa izinhlelo zokubhoboza ezithokozisayo, ezijubileyo, noma ezijubile nezeziphakamiso kuye ngezimo zejoloji, izidingo zobubanzi bokubhoboza, kanye nezimfuneko zephrojekthi. Uma ama-boreholes efika ebhizini elikhululiwe, ngokuvamile eliphakathi kuka-10 kuya ku-40 metres noma ngaphezulu, izinto zokubhalansisa—kungaba imijondolo, izinsimbi ezijiyayo, noma izixhumanisi ezijubileyo—zifakwa futhi zigcinwa usebenzisa izinhlelo zokuhlanza izimela ezizimele. Ukuhlanza kuphinde kuveze umphumela: kuhlanganisa i-anchoring endaweni yomhlaba noma izimela, kukhuthaza amandla okugcina aphakeme, futhi kuveza ukuvikelwa kokugqwala ukuze kuqinisekiswe ukuhlala isikhathi eside. Ngemuva kokuhlunga nokupholisa, izenzo zokuthunga ziqala usebenzisa ama-jacks we-hydraulic, ama-cell ezinsizakalo, kanye nezilinganiso ezilungiselelwe ukuze bese kusebenza kahle okungamakhono afika phakathi kuka-50 kuya ku-500 tonnes kuye ngezinga le-anchoring nokwakhiwa. Izinhlelo zokubhalansisa eziphezulu zisebenza phakathi kwezimo zomhlaba ezihlukahlukene nezinsizwa, kuhlanganisa umhlabathi osele, izinsimbi eziphukile, izigaba eziyizingcanga, kanye neziMzila ezilungile zomhlaba. Abaklami bakhetha le teknoloji ezinhlobonhlobo zezicelo eziyinkimbinkimbi ezifana nezinkunzi zomgwaqo, iziqalo zethalente, izinhlelo zamanxi, nezigaba zemigodi ephansi, kanye nezilungiselelo zezinhlangano. Ezindaweni ezinamatshe nezindawo ezinezenzo ezifihlekile, izixhumanisi eziphezulu zikhona ezintsha zokuqinisa umhlaba kuyilapho kuncishiswa usongo kanye nomphumela wezithombe odinga izindonga ezijwayelekile. Lezi zinhlelo ziqinise kakhulu ekulawuleni izinqubo zokuhlolwa, lapho ukuphuma okukhona kudinga ukungena, kanye nasekufakeni izisekelo, lapho izixhumanisi ziqinisekisa izakhiwo ezisemkhathini kakhulu ngesikhathi sokumba noma umsebenzi wokuqinisa. Le teknoloji ibona kokubili izicelo zesikhashana ngesikhathi sokwakhiwa kanye nezifunda ezihlala impilo yesikhathi eside yokusebenza kwemithombo yabo, imvamisa iminyaka engama-50+. Ukuhlolwa kokuhlinzwa, ukuthola izinsizakalo, kanye nezinhlelo zokubuyisa ziqinisekisa ukusebenza okwenziwa ngendlela efanele futhi zivumela abaklami ukuba balandele ukuziphatha komhlaba, bathole ukuphuma noma ukwephula, futhi bagcine izinsizakalo zendlela yokwakha phakathi nomsebenzi wesixhumanisi.
Iziphuzo ezinomisiwe zokwakha zibalulekile ezakhiweni zobunjiniyela bokuhlala bezinga elijulile nemishini yokwakha, ezinhlelweni zokuxhasa izindonga zokhonkolo. Lezi ziqhaza ezakheke ngaphambili noma ezithwetshuliwe zisebenza njengesistimu yokugcina eyinhloko, ezinikeza amandla okwazisa nezici zokugcina zokwakhiwa, ikakhulukazi ezinhlelweni ezidinga amandla aphezulu okuphehla kanye nokuphila isikhathi eside. Uma zibhalwe ngophahla lokuxhasa, lezi ziqhaza zisebenza ngokubambisana nezendlalelo zokuphakamisa umhlabathi, ama-geosynthetics, kanye nezinsika zomhlabathi ukuze zakhe izinhlelo zokwakha ezihlanganisiwe ezikwazi ukuqinisekisa izigodi ezinzima, ukuxhasa izintambo, nokuphatha ukujula komhlaba ezimweni ezinzima zobunjiniyela. Iziphuzo zikhona ukuze zimelane nezinguquko ezithile, ukuhamba kwe-thermal, nokub expose emehlweni ngezimo ezihlukahlukene zomhlabathi. Ukufakwa nokwakhiwa kweziphuzo ezinomisiwe kufanele kudinge ukuvumelanisa phakathi kokulungiswa komhlaba, ukufakwa kwezinselelo, kanye nokufakwa kweziphuzo. Imishini yokwakha kanye nezinsiza ezinkulu zinesibopho esibalulekile throughout inqubo, kufaka phakathi ama-drilling rigs ukuze kufake izinsika, ama-excavators ukuze kulungiswe umhlaba, ama-cranes ukuze kufakwe iziphuzo, kanye nemishini ethokozisayo ukuze kunciphe umhlabathi ophakathi nendawo nezindawo ezisenhla kwazo. Uhlelo lokwakhiwa olujwayelekile ludinga ukusungula izinhlelo eziyinqaba, ukulungisa umhlabathi ongemuhle ngeziphuzo ezifanele ezifana ne-geogrids noma ama-geotextiles, ukufaka izinsika zomhlabathi ezindaweni ezihlongozwayo nezangle, bese kuyakha iziphuzo zokhonkolo zibekwe phezulu noma ezincane ngokuya ngezidingo zedizayini. Abakhi kumele bakhumbule izimiso zezemvelo zomhlabathi, bebala ubunye kanye nezingozi zokuphikisana ezimakethe ezigcinwe, kanye nezimo zamanzi asezindaweni ezingathinta ukusebenza kwesikhathi eside. Iziphuzo ezinomisiwe zisetshenziswa ezinhlelweni ezihlukene kuhlanganisa izindawo zokwakha izindlela, izikhungo zezemidlalo, izinqubo zokumbiwa, izakhiwo ezisogwini, nezinhlelo eziyinkimbinkimbi zezigodi ezithuthukile. Zibalulekile ikakhulu ezinhlelweni ezihilela umhlabathi omncinci noma okhanyayo, amanzi anele, izakhiwo ezigoqisayo, noma indawo elinganiselayo lapho izigodi eziyinqaba kungenakwenzeka. Lezi ziqhaza zingathwala izinhlobo ezahlukene zomhlabathi kusuka ezithuthumele zendalo kuya kumaclay anokuhlanganisa, futhi zingakhiwa ukuze zisetshenziswe okwesikhashana noma okuphakade ngama-strategies wokuphakanyiswa kokuqala. Uhlelo lwezinhlelo zokwakha ezikhiqiza i-concrete ehambisana nezinsiza zokuphakanyiswa komhlabathi nezinto zokwakha izinsika zifaka imithwalo emkhatsini omkhulu, zinciphisa imithwalo ngaphansi kwemiphakathi futhi zivumela izixazululo ezinzima ezinhlakeni zomhlaba ezinzima. Ukwakhiwa kwanamuhla kuvame ukufaka izinto zegeosynthetic eduze ne-concrete ukuze kuthuthukiswe ukusebenza futhi kuhlangabezane nezindleko, kuvumela abenjiniyela ukuthi baphucule ukujula kanye nezinhlelo zezinselelo, i-configuration yokuphakanyiswa, kanye nezimo zomkhiqizo wonke ukuze zihlangabezane nezidingo ezithile zephrojekthi ngenkathi kuqinisekisa izici zokuphepha ezifanele ezimweni zokusebenza nezimo zendawo.
Ama-waler beams ayingxenye ebalulekile ekuhlinzekeni ubuchwepheshe bezinjiniyela be-geotechnical, enza njengama-elementi ezakhiwo aphakathi kwezinkomba ezithile nezishesha ezihloselwe ukuzinzisa iziqhumisi nokuqinisa izigodi. Lezi zinto ezakhiwe ngentshebe noma stidhli zenza njengezinhlelo zokusabalalisa yük, zidlulisela amanzi kusuka ezinhlelweni zokubopha, izikhala, nok pressure yomhlaba ziya kumakhenikhenu avulekile njengama-soldier piles, ama-sheet piles, noma izindonga eziphathekayo. Ngokwenkampani yomsebenzi wezisekelo ezijulile kanye nokuzinza komhlaba, ama-waler beams avumela abaphathi bezinqumo ukuba baphumelele ukuhlinzeka ubunzima obukhulu ngenkathi beqinisekisa ubuqotho bezindonga nokuvikela izakhiwo ezikufuphi ekushintsheni nasekushabalaleni. Ukufakwa kwezinhlelo zamawaler beams kudinga izibalo ezinhle ze-engineering ukuze kucace ukukhula komunye nomunye, isikhala, kanye nekhono lokuthwala umlilo ngokuya ngezici zomhlaba, i-water pressure, kanye nezimo zokuhweba ezithile. Ukuklama nokwakha izinhlelo zamawaler beams kusekelwe kakhulu ezimweni ezingaphansi komhlaba, okuhlanganisa uhlobo lomhlaba, ubukhulu, angalo lokuhlangana ngaphakathi, kanye nezinga lamanzi. Ama-clays aqinile, ama-sands athuthukile, kanye nezifundo zomhlaba ezigugu zonke zikhombisa izinselele ezihlukile ezidinga ukwengeza ukuqonisa kwalabo bawaler beams. Emaphutheni amanzi noma ezindaweni ezinomsebenzi ophakeme, izinyathelo ezengeziwe ezinjengohlelo lokukhipha amanzi kanye nokukhuphuka kwezakhiwo noma izinhlelo ze-anchoring zingase zidingeke ukuze kugcinwe ukuzinza kwezakhiwo. Izifundo zethuba le-geotechnical, kuhlanganisa izinhlelo zokubhoboza, ukulinganisa emalabhorethri, kanye nezihloko zokuhlola izigodi, ziqhuba ukukhethwa kwezimodeli ezifanele zamawaler beams nezincazelo zezakhiwo. Ikhono elastomeri nobuciko bokwakhiwa be-steel bobabili banikeza izinzuzo ezihlukile: i-steel inikeza amandla aphezulu wokuphila-nge-weight ratios kanye nokufakwa okusheshayo emcyclini enembile, kuyilapho ama-concrete walers enza izinzuzo zezindleko ezinhle ezinhlelweni ezidala kanye nokwandisa ukuhlala ezindaweni zomhlabathi ezigaqazayo. Izinsiza nezindlela zokufaka ama-waler beams zihluka ngokuya ngezimo ze-site nezidingo zezakhiwo. Izinsiza zokushaya izitsha ezihlanganiswe ne-crane, ama-vibratory pile hammers, kanye nezinhlelo ze-hydraulic press zithuthukisa ukufakwa kwamalunga okusekela avulekile lapho ama-waler ebekwe khona. Izimiso zokwakha zanamuhla zikhulisa ukusebenzisa izinhlelo zamawaler ezisizayo ndawonye nezixhumi, ezidala amandla okukhokha u-sag yensika kangangokuthi zinciphisa inani lezo zikhala ezithandwa ngaphakathi kokuhlinzeka ngezihlahla ezijulile. Ukusebenza kuhlotshaniswa nezigaba ezahlukene okubalwa abunxiweyo, izakhi zokushayisana nezinsizakusebenza, kanye nokulondolozwa kwembobo emadlalweni akhulu. Ezindaweni ezinomthelela noma ezindaweni ezithintekayo kumigudu, ama-waler beams ahlanganiswe nemiyalo ezokwakha ayaphumelela futhi akhulise inqubekela phambili yokwakhiwa kwesikole. Ukukhetha nokwethula izinhlelo zamawaler beams kufanele kubheke ukuvikela isikhumba, ikakhulukazi ezindaweni ezithintwa kakhulu noma ezisemgudwini ezinobungozi lapho i-sacrificial steel thickness noma ama-coatings avikela kuba nezidingo ezibalulekile. Izinyathelo zomhlaba zipoqwa zonke emkhakheni wokugcina kufanele kuqinisekiswe nge-structural analysis, kuqinisekisa ukuthi izinqubole zithumele kahle kuzo zonke izinhlanga kuze kube sezizindeni eziphakeme zemiphakathi emikhulu. Ukuhlelwa kahle kokwakha, ukulawulwa kwekhwalithi ngesikhathi sokufakwa, kanye nokuhlolwa okuqhubekayo kokukhuphuka kwezindonga kanye nokuvuka kwegumbi kusengozini yephrojekthi empumelelweni. Kubathumeleli bezimakethe abahlola izinsizakusebenza ezijulile, uqonda izicelo zamawaler beams nezidingo zokuchaza kuvumela iziphakamiso ezichumayo eziphathelene nezinhlelo zamapilingi, izinsiza zokubopha, kanye nezixazululo ze-geotechnical ezinxephezelayo ezisekela izimo zokwakha zanamuhla ezindaweni eziphawulekayo.
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