DTH Ukukhonza Ngama-Diamitha Amakhulu

Ukukh drilling njalo (DTH) kokusebenza kwezinkulu zithuthukisa indlela ethile futhi esebenzayo kwi-injini yokwakha izisekelo zokujulile yokudala amaboreholes anobubanzi obukhulu ezimo zomhlaba eziyinkimbinkimbi. Le ndlela yokukh drilling isebenzisa imishini yokuhamba ye-percussion efakwe phezulu endaweni yokubhonezela, ikhipha amandla aphezulu ngqo embotsheni ye-borehole kunokuncika kuphela ekusikeni kokujikeleza. Le ndlela ithuthukile ikakhulukazi emisebenzini yokukh drilling ngezinga elikhulu lapho ukukh drilling okujwayelekile kungathola ukuhamba okweqile, ukungazinzile, noma ukusebenza okuncishisiwe. Izinhlelo zokukh DTH ziphumelela ekungena ezinsizakalweni eziqinile, ezindaweni ezidla umhlabathi, ezilungisweni ezingafani, kanye nezikhumbulo zomhlaba ezihlanganayo ezivamile kubuchwepheshe bezisekelo. I-hammer ye-downhole iguqula amandla elanga alahlwe engxenyeni ye-percussion, ikhipha ndimitha lempande nezingqimba zomhlaba kanti i-drill string eqhuba ikhipha izinto ezicwengile ngezikhalazo zokuphakela izinto. Le nhlanganisela ye-percussion nokujikeleza ivumela ukuba kube nokunwetshwa okuqhubekayo nakwezimo zomhlaba eziphikile nezihlanganisiwe. Ukuhlelwa kwemishini ye-DTH yokukh drilling kwezingqimba ezinkulu kufaka phakathi izinhlelo zokukh drilling ezikhethekile ezinesikhumba esinempilo, ama-compressor omnwabo anokulinganiselwa okuphezulu nokucindezelwa, amapayipi wezinkulu ezinzima kanye nezinsiza, ama-hammers e-DTH ehlelwe ukuze ahlale uzinze edwaleni, kanye nezinhlelo zokuphakela ezithuthukisiwe zokukhipha izinto ezicwengile nokuhlanza amaborehole. Izinsiza ezizenzekelayo ezifaka phakathi ama-drill collars anesisindo esinzima, ama-centralizers, kanye ne-casings zokuhola ziqinisekisa ukulangazelela kwe-borehole bese zithintwa ekuphambukeni, okubalulekile lapho sitholakala izikhala ezinkulu zokusika ama-shafts ezisekelo, ama-collumns okwesekela odongeni be-diaphragm, noma ukufakwa kwemigqa. Izicelo ze-DTH zokukh drilling kwezingqimba ezinkulu zifaka phakathi ama-shafts ezisekelo avela kumamitha amanye kuya kwangu-nezine noma ngaphezulu, okwenza le ndlela ibaluleke kakhulu kumaphrojekthi ezisekelo ezijulile adinga amandla amakhulu okuthwala yük. Izicelo zokukh drilling kwezingqimba ezinkulu ze-DTH zifaka wonke umkhakha wezidingo ezisemqoka zezisekelo ezijulile emikhakheni yokwakha kwezohwebo, imboni, kanye nezisombululo zokwakha. Amaphrojekthi amakhulu afaka ukufakwa kwezingqimba ezinkulu ezizimele, ama-piles abotshiwe, kanye nezindonga ze-diaphragm zozakwethu, izindlu eziphakeme, izikhumbuzo, kanye nezindleko zezimboni. Le ndlela ibalulekile kakhulu ezindaweni ezisemadolobheni lapho imikhawulo yendawo nemigomo yokugcina imvelo ifuna ukucaciswa kokukh drilling ngebhuku elincane lokuphazamiseka kwemhlabathi. Izimo zomhlaba ezifanele ukuphakama kwe-DTH zezingqimba ezinkulu zifaka phakathi izinsizakalweni ze-limestone, udaka lwe-granite, isandstone, shale, imakethe ye-cock strata, nezixazululo zomhlaba-nezingozi lapho ukukh drilling okujwayelekile kuthola ukusebenza okuncishisiwe. Ezindaweni ezithambile zomhlaba, le ndlela ihlala isebenza ngamasu afanele wesekelo se-casing. Ikhono lokukh drilling kwezingqimba ezinkulu ngebhuku lokusebenza kahle kuyo yonke i-geology ehambisanayo, ukuqinisekisa ukuvikeleka kwe-borehole ezindaweni eziphikisanayo, nokufinyelela izinga elihambelanayo lezisekelo kuyenza iphumelele ukuba yinsizakalo ebalulekile yama-contractor aphatha izinkinga ze-geotechnical eziyinkimbinkimbi kwi-injini yokwakha izisekelo ezijulile.