Emkhakheni wokwakhiwa kwezisekelo ezijulile kanye nezenjiniyela zegeotechnical, ama-rig amaningi asebenza ngamafektri anezikhungo eziqinile (fixed leader masts) ahlukaniswa njengohlobo oluyisisekelo lwezinto zokusebenza ezenzelwe ukusebenza kahle nokuguquguquka. Lezi zingezi zihlomele ama-hydraulic rigs ukwenza imisebenzi ehlukahlukene, kufaka phakathi ukuthunga, ukwakha amaphoyinti, kanye nokuthuthukisa umhlaba, okwenza kube kubalulekile kubathengisi ababandakanyeka emikhiqizweni eyinkimbinkimbi. I-fixed leader mast inikeza ukuzinza okwandisiwe kanye nokunembile, evumela ukuphathwa kahle ngaphambi kokuthunga. Le msebenzi yokwakha iyasiza ikakhulukazi ezimweni zomhlaba ezinzima, lapho ukugcina ubuqotho bebhorehole kubalulekile. Ama-rig amaningi asebenza ngamafektri anezikhungo eziqinile asebenza ngezinhlelo ze-hydraulic eziphathelene nezinsiza ezihlukahlukene kanye nezinsiza ezisetshenziselwa inqubo yokuthunga. Uhlelo lwe-hydraulic luvumela i-rig ukuthi ikhiphe amandla amakhulu, okubalulekile uma kuhlola izakhiwo zejeoloji eziyinkimbinkimbi. Abaphathi bangashintsha kalula phakathi kwemisebenzi ehlukene, njenge-auguring, CFA (Continuous Flight Auger) piling, futhi nokuhlola umhlaba, besebenzisa izinsiza ezihlukahlukene ezihambisanayo. Lokhu kuqukethwe akukhulisi kuphela ukukhiqiza kodwa futhi kunciphisa isidingo sezinsiza eziningi endaweni, kunciphisa izinkinga zokusebenza. Izicelo ezibalulekile zalawa ma-rig emsebenzini wesisekelo esijulile kanye nezinhlelo ze-geotechnical zifaka ukufaka amaphoyinti ezindongeni, izakhiwo eziphakeme, kanye nezinye izinhlelo ze-infrastructure. Zisetshenziswa kakhulu nasezinhlelweni zokuthuthukisa umhlaba ezifana nokuhlanganisa umhlabathi kanye ne-grouting, okubalulekile ukuze kuthuthukiswe izakhiwo zomhlaba kanye nezizinda. Ukuhlangabezana nemisebenzi ehlukile ye-geotechnical, kuwenza ukuba abavuli bakwazi ukubhekana nezinkinga ezahlukahlukene, kusukela ekuhloleni emadolobheni kuya ekuthuthukisweni kwezindawo ezikude, okuzenza zibe yinsiza ewusizo kunoma iyiphi ithimba lokwakha. Ngokubheka izincazelo zama-rig amaningi asebenza ngezikhungo eziqinile, kubalulekile ukuhlola izinto ezinjengezinga eliphezulu lokuthunga, amandla e-torque, kanye nekhono lokuphakamisa. Imodeli ejwayelekile ingaba nezinga lokuthunga eliphakathi kuka-15 kuya ku-40 metres, nemiphumela ye-torque engadlula i-100 kNm, kuye ngezidingo ezithile zokusebenza. Ukukhetha i-rig kuzoncika nasemhlabeni ohambisana nobunzima bendawo, njengoba ama-rig ahlukeneyo angaklanywa ukuze akhuthaze umhlaba softer, medium, noma onzima, eqinisekisa ukuthi abathengisi bangakhetha izinsiza eziphumelela kakhulu kuzidingo zomsebenzi wabo. Ukukhetha i-rig efanele kunomsebenzi wokuhlola izinkomba ezihlukahlukene, kuhlanganisa ukusetshenziswa okuhlosiwe, izimo zendawo, kanye nesikali sephrojekthi. Abathengisi kufanele bacabangele ukuhamba kwe-rig, kulula ukusebenza, kanye nokuhambisana nezinsiza ezikhona. Ngaphezu kwalokho, izinto ezinjengozinzo lokulungisa nokutholakala kwezinsiza ezikhethekile zingathinta inqubo yokwenza izinqumo, njengoba ubuqotho kanye nezinsizakalo kubalulekile ekugcineni ukusebenza kahle ezindaweni zomsebenzi. Ekuphetheni, ama-rig amaningi asebenza ngezikhungo eziqinile ayisisekelo sokusebenza kwesimanje kwezisekelo ezijulile kanye nezinhlelo ze-geotechnical. Ubuqambi bawo, buhlanganiswe namakhono e-hydraulic athuthuke, bunika abathengisi amandla okwenza imisebenzi eyahlukene kahle, kuqinisekisa imiphumela ephumelelayo kumaphrojekthi ezimeni eziyinkimbinkimbi. Njengoba umkhakha uqhubeka nokukhula, lawa ma-rig azohlala eyiwusizo ekutholeni ukunembile kanye nokwethembeka emsebenzini wokwakha izisekelo kanye nokuthuthukiswa komhlaba.
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