Amathuluzi anamaSegment Angabuyiselwa

Ibhithi enezigaba ezingathwalwa ifanekisela ubuchwepheshe obukhethekile bokubhoboza obubalulekile bokubhoboza obukhulu be-diameter ngaphansi komhlaba (DTH) bokuphuma kwethusi ezinhlelweni ezinzima zokusebenza kwezimiso zokwakha nezizinda. Lezi zibhithi ezithuthukisiwe zinezingxenye ezivulekile zokusika ezingenziwa zanda ngesikhathi sokubhoboza futhi zibuye zibe nezinzuzo zokuhoxisa kahle emholes, zenza kube nemigomo ecacile yokubhoboza ngaphezulu kwezimo ezixakile zomhlabathi, i-rock ebhujiswe, nezimo ezihlangene ezvamanda ezijwayelekile emsebenzini wezizinda ezinjini. Ukuklanywa okususwayo kuvumela abakhiqizi ukuba bartheze isivinini sokubhoboza kanye nekhono ngenkathi kugcinwa izinga eliphezulu lokuphuma komhubhe kanye nezimo, okubalulekile ezinqubweni zokubhoboza umhlabathi, ukufakwa kwezikhala ezincane, kanye nezinhlelo zokubhoboza ezinkulu. Ngokusho kwezimo ezithile zomhlaba ngesikhathi sangempela, lezi zibhithi zinciphisa isikhathi sokusebenza kanye nezindleko zokubhoboza ngenkathi zithuthukisa ukuphepha kanye nokunemba ekwakheni izizinda. Ubuchwepheshe bokubhoboza obusebenzisa ibhithi enezigaba ezingathwalwa buhlanganisa amandla wokuphuma kwe-DTH hammer nezinhlangano zokulungisa zezingqimba zokusika ukuze kudlulelwa ezisemazingeni ehlukeneyo nasentwasahlobo yomhlaba. Abasebenzi bangathanda izingxenye ukuze kuqukethwe ububanzi obukhulu nokufika okuqondile emalungwini anzima njenge granite, limestone, nezindlalifa zecement, bese bezaabuyisela emuva lapho behamba phakathi kwezinto ezithambile ezifana ne-clay, silt, nezimfunda ze-sand. Lezi zinguquko zikhombisa ukwethenjwa ezinhlelweni zokuhlola umhlaba, ukubhoboza ama-caisson, kanye nokufakwa kwezikhala zokuphela lapho izinga lokufika eliqhubekayo nemiphumela yebhithi ibaluleke kakhulu. Izigaba ezithwalisakele futhi zisebenza kahle ekukhishweni ngokusebenzisa ama-casing wesikhashana nezimo ezinzima zokubhoboza, zinciphisa ingozi yokubamba ibhithi futhi zinciphisa umonakalo wombhobho wezinsiza zokubhoboza kanye nomhlaba ozinzile ophakeme. Izicelo zezigaba ezithwalwe ibhithi ziqhubeka kuhlu oluphelele lwezobunjiniyela bezizinda ezijulile, kusukela ekwenzeni izakhiwo ezisebenzayo nasezinhlelweni zokuhlola umhlabathi zokutholwa kwezinhlelo zokubhoboza kuze kube sekuthatheni izingxenye ezikhokhelwayo ezimangalisa, izakhiwo eziphakeme, kanye nezinsizakalo ezibalulekile. Lezi zibhithi zikhombisa ubuchwepheshe ekwenzeni umhlaba lapho kubalulekile ukubhoboza kahle phakathi kwezindawo zomhlaba nezindonga, njengoba kusebenza ekwakheni izindonga zokuhamba, iziqeshana, kanye neziphila ezinkulu ezidinga umhubhe ocacile, ozinzile kuzo zonke izinkomba ezichaziwe. Abakhiqizi abasebenza ezindaweni ezehlukene ze-geo-logical ezineqembu lokuhlanganiswa komhlaba ne-rock, njengezindaweni ezishunqayo ezibomvu ngaphansi komhlaba noma endaweni yokugcina ye-glaciated enezinhlaka ezinqwabelene, babezuza ekuqhubekiseleni phambili ukuphumelela kokubhoboza nezinga elihamba phambili elilethwa ubuchwepheshe bebhithi enezigaba ezithwalwe. Lezi zibhithi zihambisana nezinyathelo ze-DTH hammer eziyindilinga ezivela kumamodeli aphezulu ubukhulu, okuvumela ukuhlanganiswa okungabizanga ezinsizeni zokubhoboza ezikhona ngenkathi kuthola uzuza okuthile ekuphuculweni kwamazinga, ubuxhakaxhaka bomhubhe, kanye nokuphila kwezinsiza. Ukukhetha okukhona kwezincazelo zezibhithi ezithwalwe kufanele kuhlukile uvivinywe ukufaka isimo somhlaba, ubude obahlukene bokubhoboza, ububanzi bemhubhe, kanye nemithetho ethile yokumelana nezindonga nezithombe. Abanye ababhali bokwakha kanye nabahlola umhlaba bahlanganyela ukuze kuvunyelwe ukwakhiwa kwabithitha, ukukhetha ibhithi, nezimo zokusebenza—kufaka phakathi izinga lokuhamba kwamanzi, umfutho wezwi, nokujikisa—ukuze kufezekiswe izinjongo zokubhoboza ezithile zenhlangano ngenkathi kugcinwa ukwethembeka kwezinsiza nezindinganiso zokuphepha. Ukutshalwa kwe-premium retractable segment bits kuyinzuzo ngezikhathi zokubhoboza ezincane, ekufuna izibonakude, kanye nezakhiwo ezinzima ezibhekisela kwezenzakalweni ezithinta ukuphakama komnyango, indlela yokwakha, kanye nezindleko zomsebenzi omkhulu emakethe yokwakha eyalimelayo.