Izinsiza zokubhoboza izimbobo ezijulile zimenze imishini ebalulekile yokuphatha ukulawulwa kwamanzi omhlaba emisebenzini yokwakha izisekelo ezinkulu kanye nezinhlelo zobuchwepheshe bendawo. Lezi zinsiza ezikhethekile zenzelwe ukwenzela ukuhlinzeka izimbobo ezijulile ezinamazinga alungile ukuze kufakwe izinhlelo zokukhipha amanzi eziwulawulayo ukuphakama kwepulatifomu emisebenzini yokwakha esebenzayo. Ukusebenza kokubhoboza izimbobo ezijulile kubaluleke kakhulu uma kenzelwa ukuhamba ngaphezulu kwepulatifomu yemvelo yamanzi, njengoba amanzi omhlaba angaphathwa angakwazi ukuphazamiseka izimo zomhlabathi, threatens the structural integrity, and compromises foundation quality. Ngokwehlisa amanzi ngendlela efanele ngezisombululo ezijulile ezisezingeni elifanele, abaqhubi bangakha izindawo ezinzile, ezikhipha amanzi ezivumela ukusebenza okuphephile nokuphumelelayo ezingeni elijulile. Inqubo yokukhipha amanzi ezindaweni ezijulile ibandakanya ukubhoboza izimbobo eziqondile noma eziseduze nezindilinga ezijulile ezifika emamethrikhi angama-50 kuya kwengaphezu kwama-200, kuye ngezidingo zephrojekthi nezimo ze-aquifer. Imishini yokubhoboza yanamuhla esebenziselwa lokhu isebenzisa indlela yokubhoboza ejulile, indlela yokubhoboza ngekhebula, noma umoya oqhubekayo ukufaka indawo ehlukile izimo ze-geological ezifaka ubhaku, isihlabathi, isihlabathi esinamanzi, nezinhlelo zobhalela ezihlukene zamatilosi. Uma imbobo ifinyelela ezingeni elihlosiwe, ochwepheshe bafaka izikhala lapho, ama-chambers pump, nezinhlelo zokuhlunga ukuze kube nokukhishwa kwamanzi okuphumelelayo. Isigaba sokubhoboza uqobo sidinga ukunemba ekugcineni ukuzinza kwemizila yokubhoboza, ukulawula ubude obunembile, kanye ne-layoff efanele, njengoba izindlela zokubhoboza ezingalungile zingalimaza ukuhamba kahle kwewell noma ziphazamise ubumsulwa be-aquifer. Izinhlobo ezihlukene zomhlabathi nezinhlelo zomhlaba zidinga izindlela zokubhoboza ezenzelwe, kanti ukukhetha imishini kuqhakanjiswa ngokuya ngezici ezifaka phakathi ububanzi bembobo, ubude obudinga ukufika, inhlanganisela ye-geological, kanye nezinga lokuphumpa elilindelekile. Imishini yokubhoboza izimbobo ezijulile isetshenziswa kumaklayenti amaningi kokuqhuba zemisebenzi yokwakha izisekelo okuhlanganisa ukuhamba kwezakhiwo, ukwakhiwa kwemigudu yezinhloso, ukwakhiwa kwemibhoshongo, imisebenzi yokwakha izisekelo zebhodi, kanye nemiklamo yezokwakha ezinkulu. Ukukhishwa kwamanzi okuzuziwe kulezi zegumbi kuvimbela ukuhamba kwezimila, ukuphumelela kwepip, kanye nochwephesha olungavamile lokuhlola ukwakhiwa okwakha ezindaweni eziseduze nasezindaweni eziphansi. Eziqhingini ezikhiqizayo ezifana ne-clay noma izinyosi ezinjengophakeme, ukhiphemayo okwenziwe kahle kwezimbobo ezijulile kunganciphisa kakhulu inkinga yokuhlala nokwandisa izimo zokusebenza. Imishini kumele ikwazi ukuphatha izinselelo zobuchwepheshe zokubhoboza ezijulile ngenkathi kugcinwa izindinganiso zesimo se-ecological nokunciphisa umthelela ezindaweni ezizungezile nezakhiwo. Amaqembu aphatha imisebenzi yokubhoboza izimbobo ezijulile adinga ulwazi olukhethekile lwe-hydrogeology, ukuqondiswa kwe-aquifer, ukwakhiwa kwamawell, kanye nezinhlelo zokukhipha amanzi ukuze kufezwe ukulawula amanzi omhlabathi okuphethe kwezokwakha ezinzima.
Imishini yokumba imithombo ethwalwa ngaphakathi kwemoto ibonisa uhlobo oluthile lwemishini ye-geotechnical eyenzelwe ukufakwa kwemithombo emikhulu, izinqubo zokukhucululwa kwamanzi, nokuphathwa kwamanzi omhlaba emaphrojekthini amakhulu okwakha. Lezi zinhlelo zokumba ezihambayo, ezibekwe kumachasi emoto anamandla, zihlanganisa ukuhamba kalula namandla okumba okujula, okwenza zifanele ukufinyelela ezindaweni ezijulile ze-aquifer nokwenza ukwehla kwamanzi ngendlela ehlelekile emsebenzini wokuhamba. Ukumiswa kwempahla ethwalwa ngaphakathi kwemoto kuvumela abaphathi ukufinyelela ezindaweni ezikude noma ezivamile lapho imishini ejwayelekile yokumba enezinyathelo noma imishini emi ingasebenzi kahle, kodwa kugcinwa amandla nokunemba okudingekayo ukuklama izimbobo ezivame ukukhula ngaphezu kuka-100 metres ububanzi. Umsebenzi wokusebenza kwemishini yokumba imithombo ethwalwa ngaphakathi kwemoto ufaka izindlela eziningi ezilungiselelwe izimo zomhlaba nezajantshi ezihlukahlukene. Izindlela zokumba ezijikayo zibhekwa kuleli qembu, zisebenzisa ukujikelela okuqhubekayo okuhlanganiswe nengcindezi ye-hydraulic ukuze kuthuthuke phakathi kweziqongo ezinzima, ukunikezwa kwemabula, nezimo ze-bhuloho ezizinzile. Abaphathi basebenzisa izincibilikisi ezihlukahlukene zokumba—kusukela ekuphumeleleni komoya ezimweni ezizinzile kuya kumasistimu amanzi aphakathi kwezinkinga noma emhlabathini enamanzi—ukuze kugcinwe ukuzinza kwezimbobo futhi kuqinisekiswe ukufakwa okufanele kwemikhono. Inqubo yokumba ivamise ukufaka ukuthuthuka kwe-auger enezigaba ezingenalutho noma izindlela zokumba ezinezendlalelo, kuye ngezimo zokuhlala ezitholakele nezincazelo ezidingekayo zemithombo. Uma imbobo ifinyelela ububanzi obukhulu, izikrini zemithombo, amaphakethe egravel, nezinto zokuhlunga zifakwa ukuze kuhlangabezane nokungena kwamanzi ngenkathi kuvimbela ukuhluza, into ebalulekile ezinhlelweni zokukhucululwa kwamanzi ze-geotechnical. Imishini yokumba imithombo ethwalwa ngaphakathi kwemoto ithola ukufakwa okukhulu emaphrojekthini amakhulu okuhlinzeka ngokuqondile kokuphathwa kwamanzi omhlaba. Izinhlelo zokukhuculwa kwamanzi ezijulile zinciphisa itheku lamanzi ezindaweni zokumba, zigcina izintaba ziqinile futhi zithuthukisa ikhono lomhlabathi lokwakha izisekelo, ikakhulukazi ezindaweni zasemadolobheni lapho ukwehla kwamanzi okujwayelekile kudala ukungavumi noma ukunyakaza okungamukeleki. Ukuhlolwa kokumba nezinsiza zamanzi kuphinde kube nezinye izicelo, njengoba lezi zikhuni zinga ngwaqa ububanzi be-akhawunti emithonjeni yamanzi yomphakathi nezimbobo zokuhlola izinsiza. Izpecifications zemishini ngokuvamile zifaka amandla okumba atholakala phakathi kuka-300 no-1500 metres kuye ngosayizi wemishini, ngama-diameters embobo ukusuka ku-150mm kuya ku-600mm, okuvumela izilinganiso ezihlukahlukene zamaskrini emithombo nezidingo zokuhlunga. Izingxenye ezintsha ezithwalwa ngaphakathi kwemoto zibonisa izinhlelo zokuqondisa advanced, ukuphatha ampiphu okuzenzakalelayo, kanye nezisetshenziswa zokuhamba ezihlanganisiwe ezithuthukisa ukunemba kokumba nokusebenza kahle ezindaweni zokwakha eziphezulu zasemadolobheni lapho ukunyakaza okuqondile kubalulekile. Ukukhetha imishini yokumba imithombo ethwalwa ngaphakathi kwemoto kuncike kakhulu ezimeni ezilindelekile zokuhlala nezidingo zephrojekthi. Abakhi badinga ukuhlola ukwakheka komhlabathi, ukuzivikela okulindelekile kokumba, ububanzi obudingekayo bemithombo, nezinga lokukhukhula emanzini ukuze baphathe ngokufanele usayizi wemishini nezenzo zokumba. Izimo zomhlaba eziqala kuma-alluvial soils abuthakathaka ukuya kumasandstone aqinile futhi abumba kahle kudinga izindlela ezihlukene zokumba nezipesheli zemishini yokuxhasa. Ikhono lokumba kahle phakathi kwemigqa ehlukahlukene ye-geological ngenkathi kugcinwa izimbobo ezizinzile nokufakwa kwezinhlelo zemithombo ezithembekile kwenza imishini yokumba ethwalwa ngaphakathi kwemoto ibaluleke kakhulu kwezokwakha izisekelo ezithuthukisayo kanye nezinhlelo zokulungisa imvelo ezindaweni ezintsha ze-geological.
Izinsiza zokuqondisa izimbobo ezinzulu zenzelwe imishini eklanywe ngokukhethekile ukuze ihlaziye izimbobo ezinzulu ezisetshenziswa kwezobunjiniyela bezezimali nasezobunjiniyela, ikakhulukazi lapho izimo zendawo zidinga ukuthuthwa okuphezulu nokuzinza. Le misebenzi ibonakala ngohlelo lwe-undercarriage esebenzisa ama-crawler, oluhambisa isisindo ezindaweni ezinkulu zokuxhumana ne-ground futhi luvumela ukusebenza emhlabathini othambile, ophethwe amanzi, noma ongazinzile okungatholakalanga kumakhosombe noma ezinkundleni ezimisiwe. Ukuhlelwa kwe-crawler kuveza ukuthuthukiswa okukhulu nokusatshalaliswa komthwalo, okwenza kube kuhle emisebenzini yokuhlukanisa amanzi ezimbobeni ezinzulu ezindaweni zokwakha ezinobunzima emhlabathini. Lezi zingxenye zivame ukuba nezinsiza ezinamandla zokuhlasela ezikwazi ukufinyelela depths ezibalulekile ngenkathi zigcina ukuhlela okuqondile okukhombisa indaba yokwakha izinhlelo eziphumelelayo zokuhlukanisa amanzi ezigcawini ezinkulu, emisebenzini yokwakha phansi, nasezobunjiniyela bezisekelo. Izicelo eziyinhloko zezinjini zokuhlola ama-crawler zifaka phakathi uhla olubanzi lwemigogodla ezinzulu kanye nezimo zokuthuthukiswa komhlaba. Ezinhlelweni zokuhlukanisa amanzi ezinzulu, lezi zingxenye zakha izindlela zokuhlola eziqondile zokufaka izikrini, izihlungi, nezinhlelo zokuhlola eziklanyelwe ukwehlisa izinjini ze-water table emzindeni wokwakha. Lokhu kubalulekile kakhulu ekuthuthukisweni kwezakhiwo, ekwakhiweni kwamathunithi, ekuhlangabezaneni komhlaba, nakwamaphrojekthi ezikhululo zezimoto lapho ama-water tables aphezulu noma amanzi aphakeme akhombisa izinselelo ezinkulu ekuzinziseni kwesakhiwo nasempilweni yabasebenzi. Izinsiza zokuhlola ezinzulu ze-crawler zenza kube nokwakhiwa kwezingqalasizinda ezidingekayo ukuze kube nezinqubo zokunciphisa ingcindezi, izimbobo zokukhulula, nezinhlelo eziphelele zokuphatha amanzi emhlabathini. Le mishini ibaluleke ngokufanayo ekuhloleni izitofu zomhlaba, ivumela onjiniyela ukuthola amasampula omhlabathi kusuka depths ezinkulu ngenkathi establishing izimbobo zokubuka zokuhlaziya amanzi. Amakhono wezobuchwepheshe ezinjini zokuhlola ze-crawler awazitholi nje kuphela ezimweni ezinzima zomhlaba aphakathi kwama-clay strata, ama-sandy layers, izinsalela ezithambile, kanye nezimo ze-geological ezixubile. Izindlela zabo zokubhaka, zihlanganiswe nezindondolo ezahlukene zokuhlasela nokukhonjwa, zenza kube lula ukuhlinzeka emhlabathini oqinile nezakhiwo ezingahlanganisiwe. Uhlelo lwe-undercarriage ngendlela eyenziwe ngama-crawler luhlosiwe ikakhulukazi kumhlaba omnyele, ophakeme ngamanzi, noma owangeniswayo lapho izinjini ezivamile bezizoshaywa ukudlula. Izinsiza zokuhlola ezinzulu ze-crawler zifaka phakathi izinhlelo eziphambili zokulinganisa ukujula, ukulawula izimo zokuhlasela, kanye nezinkonzo zokubhalisa idatha ezivumela ukwakhiwa kokubuka okwedlulele nokwenziwa kwezinqubo zokuhlola. Abashayeli bangalungisa iziteshi zokuhlasela, izinga lokujikeleza, kanye nesisindo sokuqhuba ukuze kulinganiswe nezimpahla zomhlaba ezahlukahlukene nezimo ze-geological ezibhekwa phakathi kokwakhiwa kwemigudu ezinzulu. Ukuthuthwa kwalezi zingxenye, kuhambisana nokunemba kwazo kokuhlola, kuzenza zibe izingxenye ezibalulekile ezihlanganisiwe ezimbonini ezinkulu zokuhlunga amanzi ezidinga ukuba nezimbobo eziningi noma eziningi ezishinga ezindaweni zokwakha, ngokuhambisana nokulawula okujule kahle kanye nezinhlelo zokufaka ezinhle ukuze kuthuthukiswe ukusebenza kwesistimu ekuphatheni ukufika kwamanzi nokugcina izimo zokuhlanza ezinzile phakathi nokusebenza kwezinhlelo.
Ithuluzi elihlinzekiwe elibekwe kwi-trailer lokumbiwa kwemithombo yamanzi limele isixazululo esihlukile nesihambayo sokuthuthukiswa kwemithombo yamanzi engaphansi kwamanzi nasezinhlelweni zokumbiwa kwe-geotechnical emkhakheni wezinsiza zemfoundation kanye nezinhlelo zokuthuthukisa umhlaba. Lezi zisetshenziswa ezenzakalelayo zihlanganisa amandla okumbiwa nezixazululo zokuhambisa, kuvumela abasebenzi ukufinyelela ezindaweni ezikude noma ezinzima lapho izinhlelo zokumbiwa ezinkulu, ezimisiwe zingase zingafaneleki. Ukuhlelwa okuhleliwe kwe-trailer kubalulekile ekutholeni, ezahlumisweni ze-hydrogeological, nasemithombeni yokuthuthukiswa ezindaweni ezinemikhala elinganiselwe noma ezindawo ezinzima. Ukuhamba kwezinhlelo ze-trailer kuholela ekwenzeni kube lula ukukhipha imithombo emisha ezindaweni eziningana zamaphrojekthi, kunciphisa isikhathi sokusetha nezindleko zokusebenza ngenkathi kugcinwa ukunemba kokumbiwa okudingekayo kokwakhiwa kwe-subsurface nokuphathwa kwemithombo yamanzi okubalulekile ekucwangcweni kokwakhiwa kwezimiso ezinzulu. Izincazelo zobuchwepheshe ze-trailer-mounted well drilling rigs zihluka ukuze zihambisane nezindawo ezahlukene zokumbiwa nezimo zomhlaba, lapho amafayela amaningi ekwazi ukuphuma ngaphakathi kwamamitha angu-300 ukuya ku-1,000 noma ngaphezulu kuye ngokwakheka komhlabathi nangendlela yokumbiwa. Lezi zinhlelo zivame ukusebenzisa izindlela zokumbiwa kwe-rotary percussion, izinhlelo zokuhlanza umoya, noma izindlela zokuphakela umjikelezo we-mud ukuze kususwe kahle izinsalela futhi kuziswe izindonga zomthambo emsandleni, insimbi, i-clay, nakwezindonga ezihlanganisiwe. Ukukhethwa kwendlela yokumbiwa kuya ngezimo ezithile ze-geological, izimo ze-water table, nezidingo zokwakhiwa. Izinhlelo ezibekwe kwi-trailer zivame ukuba nama-compressors anamandla, izipumpu ze-mud, kanye nezixhobo ezihlanganisiwe ezingavumela ukusebenza okuqhubekayo ngaphandle kokuxhaswa kwezinkampani zangaphandle, okwenza kube kuhle ukuhlole izifundo zokufanelekela nezincazelo zezindawo ezinasentwasahlobo yokuqala kokwakhiwa kwezimiso. Ubukhulu obuncane nolwazi oluhlangene lwezinhlelo kumunca izinkinga ze-logistics ngenkathi kugcinwa amandla okungena kwedlanzana okudingekayo ukuze kuhlolwe izindawo zokuphatha, kutholakale izendlalelo zomhlabathi ezizinzile, futhi kuhlolwe izimo zamanzi angaphansi okuthinta ukuklama kwe-pile ezinzulu nezindlela zokuthuthukisa umhlaba. Izicelo emsebenzini wokwakha ezinzulu zifaka ukuhlolela kwe-geological kwemiphakathi emikhulu, ukufaka imithombo ye-groundwater monitoring, kanye nokumbiwa kwezixazululo zokukhipha amanzi ezidingeka ukuze kuqinisekiswe izindonga ezindawo zokumba ezinjengokwakhiwa okungaphansi. Izinhlelo ze-trailer zenza kahle ekuhlinzekeni ngedatha ye-subsurface ethinta ukukhetha nemininingwane yamapaili afakwe, amapaili abilisiwe, izindonga ze-diaphragm, nezinye izinto zokwakha ezinzulu. Lezi zithuluzi zenza kube lula ukuphathwa komhlabathi, ukuhlola okwenziwa endaweni, kanye nokuhlola kwe-hydrogeological ezindaweni ezahlukahlukene ezihlanganisa izindawo ezisemadolobheni ezinezingxenye eziyinqaba, izindawo eziphakeme, kanye nezindawo ezinezimpawu zokuhamba ezincane. Lezi zinhlelo zisebenzela kokubili izigaba zokuhlola kanye nezokwakha zephrojekthi zokwakha, zisuka ekuhloleni indawo kuze kube sekugcineni kokwakhiwa kwemithombo nokuhlolwa. Ukuhlanganiswa kokuhamba, ukusebenza kahle, kanye namakhono obuchwepheshe kwenza izinhlelo zokumbiwa kwemithombo ye-trailer zibe yinsiza ebalulekile kubaconsi be-geotechnical, abakhi bezisombululo, kanye nezinkampani zobunjiniyela eziphethe izimo zomhlaba eziyinkimbinkimbi nezidingo ezinzulu zokwakha ezindaweni ezahlukene zokwakha nezimo ze-geological.
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