Ikelly enezikhala enezixhobo zokwandisa ithokozisa

I-Case kelly enezinhlobo zokuphakamisa i-torque ibonisa indlela yokumba ethile yokujikisa esetshenziswa kakhulu ku-zhinagshingo ezindongeni ezijulile nasekugxileni kwegoli ukuze kufakwe amapayipi amakhulu avulwe, imisipha yokuphakama, kanye nezikhalazo zomhlaba. Le ndlela isebenzisa uhlelo oluvikelwe lwe-kelly olwandisiwe ngamasu okuphakanyiswa kwe-torque, okwenza abadlali bephimbo bakwazi ukufinyelela izinga eliphezulu lokugcina ukuthola nokugcina ukuzinza kokumba ezimweni zendawo ezinzima. Ukwakheka kwe-case kelly kuvikelwe ithuluzi lokumba ezihlalweni ezihambayo kanye nokungcoliswa ngesikhathi i-torque multiplicator ikhulisa amandla okujikisa asetshenziswe kumathuluzi okuhlela, okuvumela ukusizwa kahle ukuhamba ngezinsiza ezinzima, ama-strata ahlanganisiwe, kanye nezakhiwo zamatshe ezibonakalisayo. Le nxusa yokuvikela kanye nokwandisa i-torque ikwenza le ndlela ikhuthaze kakhulu emisebenzini yeziqalo ezindaweni zezitshalo ezigqokile ezindaweni ezinzima zokubhalisia ukuthi izindlela ezijwayelekile zokumba zingase zingabi nekhono. Inqubo yokumba esebenzisa i-case kelly enezinhlobo zokuphakamisa i-torque iqala ngokubekwa nokuhlelwa kwe-rig yokumba ejikayo endaweni eyenziwe neqhekeza. I-case kelly iyalethwa ebhodini ngaphansi kokuncane kwemithombo nokujikisa, lapho i-torque multiplicator ikhulisa kancane amandla okumba njengoba ukumelana komhlaba kukhula. Le ndlela ivumela abadlali bephimbo ukuba bashintshe izimfanelo zokumba ngesikhathi esifanele ngokuhambisana nezimo ezingaphansi komhlaba, noma behlangana nemithombo evumelene, imifantu, noma izithiyo zamatshe. Le ndlela idinga ukuphathwa kahle kokuhamba kwamanzi wokumba ukuze kuqinisekiswe ukuvikeleka kwemikhondo ye-borehole, ukususa ukcutshungulwana, nokugcina izimo zokusebenza ezanele. Onozithandayo kumele bahlale beqapha imithwalo ye-torque, izinga lokujikisa, kanye nezimfanelo ze-hydraulic ukuze bathuthukise ukusebenza kokumba ngenkathi bevimbela ukulimala kwezinsiza eziphumayo nokuphahlazeka kwama-borehole ezindaweni ezingazinzile. Izicelo ze-case kelly enezinhlobo zokuphakamisa i-torque zilibandakanya imikhankaso yeziqalo ezijulile, kuhlanganise nezinye izinkanyezi ezinkulu ezinomumo kusuka ku-1.5 kuya ku-4 amamitha noma ngaphezulu, ukuhlela imiphakathi eqinile ye-diaphragm ukuze kufakwe imithambo ye-basement, ukufakwa kwezikhonkwane zomhlaba ezijulile kanye nezinhlelo zokubuyisela, kanye nezokumbiwa ezizimele ze-geotechnical ukuze kwenziwe ukuhlola komhlaba nokwakha. Le ndlela ibonakala iyigugu kakhulu ezindaweni zomphakathi lapho ukubumba kufanele kwenzeke ezindaweni ezigcwele ngokulandela izinqumo eziqinile zokunyakaza nokuhamba kwephakamasela, kanye nasemiphakathini ye-offshore nasezokwelapha lapho izidingo zokusiza iziqalo ziphakeme kakhulu. Izinqubo zokwenza ngcono umhlaba ezisebenzisa le ndlela yokumba zifaka phakathi ukuxuba umhlabathi ogcwele, i-jet grouting yokwakha emhlabathini, kanye nokufakwa kwe-micropiles ezinkulu zokuqinisa izakhiwo ezikhona. Umsebenzi wokwenza izinhlelo ze-case kelly ezinezinhlobo zokuphakamisa i-torque, kanye nekhono lazo lokubhekana nezimo ezihlukahlukene zomhlaba nezimo ezinzima, ziqinisekisile ukuba yizinsiza ezibalulekile emkhakheni wesimanje wezinhlelo ezijulile zezizinda zabaqashi abafuna izixazululo zokumba ezithembekile, ezisebenzayo kumaphrojekthi anzima.