Beka isibonda ngokutsho kumbindi wesikhundla semfumba, kwaye uzobe i-arc ejikelezayo ngekalika, uze umbe ngesandla umngxuma okanye i-excavator ukumba umngxuma, ubeke kwi-casing yentsimbi, kwaye ucinezele umgca wokutsalwa kwemfumba elinganisiweyo, ukuba indawo esembindini ye-casing iyafana nendawo yemfumba elinganisiweyo kunye nokulinganisa. Amanqaku aphakathi ahambelanayo, kwaye ukuma okuthe tye kunye nokuthe tye kwe-casing kufuneka kulungiswe ngesando somgca. Izinga lokuthambekela akufanele libe likhulu kune-1%, kwaye ukuphambuka akufanele kube ngaphezu kwe-50ram. Xa kungcwatywa i-casing, iindawo ezijikelezileyo kufuneka zifakwe umva ngodongwe oluphezulu, kwaye zixutywe nge-symmetrically in layers. I-diameter yangaphakathi ye-casing kufuneka igcwaliswe ngasemva. Kufuneka ibe nkulu ka 20-40cm kunobubanzi bengqumba, kwaye ubunzulu bokuzinzisa ngokubanzi bungama 200-400cm. Xa kungcwatywa i-casing, i-30cm ukuphakama kunomhlaba wendalo, kwaye i-slurry outlet ivuliwe phezulu, ijongene nomsele wodaka. Kwiimeko ezikhethekileyo, ubunzulu be-casing bunokunyuswa, kwaye ubunzima obuthile bodaka bunokwandiswa (udaka lunokugalelwa ngodongwe), kwaye impembelelo inokucotha. Ukunciphisa ngokufanelekileyo umgangatho wamanzi kwi-casing. Ukuba umda wombhobho wokukhusela ubonakaliswe emanzini, indawo ejikelezileyo inokuzaliswa ngodongwe ukuqinisa ityhubhu yokukhusela. Ukuthotywa okuqatha kunye nokufuduswa kufuneka kusetyenzwe kwakhona kwaye kufakwe kwakhona ukukhusela i-casing; ukuba udonga lomngxuma ophahliweyo luyavuza, lunokuphinda lusetyenziswe kudongwe okanye i-potassium eluhlaza (umgubo wodaka) ukwenza i-slurry ukwenzela ukwandisa umlinganiselo wodaka; emva kokuba i-casing ingcwatywe, kufuneka isetyenziswe Ihamile yomgca kunye nerula yomthi, ukulinganisa umgama ukusuka kumda we-casing ukuya kumbindi wendawo yemfumba kwindlela enqamlezileyo (okanye kwicala elilungileyo nelithe tye lendlela), kunye yenza iirekhodi zoqobo zokwakha. Ukutenxa, ukutenxa akufuneki kube ngaphezulu kwe-5em. Kwaye iimfumba zoonogada zingcwatywe zijikeleze umlomo womlindi (zingcwatyelwe kwicala elinqamlezileyo kunye namanqaku amane azotywe), ukuze umqhubi kunye nomhloli womgangatho angasebenzisa indlela yokuwela ukufumanisa indawo esembindini yemfumba.
Ixesha lokuposa: Feb-08-2022
