Iziphinyo ze-Down-The-Hole (DTH) Hammer

Ithuluzi le-Down-The-Hole (DTH) hammer bits limele ubuchwepheshe be-percussion drilling obubalulekile emisebenzini yezokwakha ezinzulu nezobuchwepheshe bezeMvelo. Lezi zithuluzi zokubhoboza ezilukhuni zensimbi noma i-tungsten carbide-zifaka ubuchwepheshe be-DTH hammer, zisebenza ngaphakathi kwezinhlelo ze-DTH hammer, zihlasele ngenhla ngokushesha ukuphula amatshe kanye nemithambo eqinile ngesikhathi sokwakhiwa kwamathunhu. Ngokwehlukana kwezindlela zokubhoboza ezijikayo, i-DTH percussion drilling isebenzisa ukudluliswa kwamandla ngohlu lokubhoboza ukuze iqhube ibhithi ye-hammer ngqo ebusweni behole, ivumele izinga eliphezulu lokungena ezindaweni ezinzima zamatshe nezinto ezihlanganisiwe. Le ndlela yokubhoboza ibalulekile ekuhlinzekeni izisekelo, ekufakeni amabhokisi, nasemsebenzini wokuhlola lapho izinhlelo ezijikayo zilinganiselwe ukusebenza. Ukusebenza kwezobuchwepheshe kwamabhithi e-DTH hammer kuncike kakhulu ekwakhekeni komhlaba nasemazingeni e-geological. Ezindaweni zamatshe eziqhubekayo—i-granite, i-basalt, i-limestone, kanye nezinto ezihlanganisiwe—i-DTH percussion drilling ifinyelela ukukhiqiza okungcono uma kuqhathaniswa ne-rotary drilling, kwenza kube yindlela ethandwa yokwakha amathunhu wamasondo ezinzulu kanye nezikhungo ezinkulu. Isenzo se-percussive sikhulisa ukukhululeka komhlaba nokukhala, kudinga ukuhlolwa ngokucophelela ngesikhathi somsebenzi wezisekelo zasemadolobheni. Abakhi kumele bahlolisise ukuhlanganiswa komhlaba, izinga lemgangatho wamatshe (RQD), kanye nesimo sokuhlukahluka ukuze bakhethe usayizi ofanele wezinsangu ze-percussion nezimo zebhithi. Ezimeni ezihlangene ezihlanganisa umhlaba namatshe, ukugqokwa kwezibhiti kuyasheshisa, kwenza kube nzima ukuhlela ukushintshwa ukuze kugcinwe ukukhiqizwa kokubhoboza futhi kugwenywe ukudalwa komonakalo ezithuluzini ngenxa yokushisa okunganele nokuhlanza. Ukuhlanganiswa kwe-DTH drilling ngaphakathi kwezinhlelo eziyinkimbinkimbi zokwakha kudinga izithuluzi ezihambisanayo ezifana namakhompiyutha omoya noma ama-hydraulic power units, izinhlelo ze-mast rig, nezithuluzi zokuhambisa ukuze kuqedwe izinsalela. Izinhlelo zokuphakamisa iziqukathi zivame ukuhambisana ne-DTH drilling ukuze zibambe izinga elingazinzile lomhlaba ngesikhathi sokungena. Imithombo yokuhlanza—umoya owodwa, ukujikeleza kwamanzi, noma i-foam—kufanele iphathe ngokuqapha ukuze iqede izinsalela ngenkathi igcina ukuzinza kwemithambo yebhole ne-cooling ye-bith. Amabhithi e-DTH hammer abhekana nokucindezela okukhulu ezindaweni ze-carbide button nasezikhungweni zensimbi, okwenza ukukhethwa kwezinto nezokukhiqiza kube kubalulekile ukuze kutholakale ukwethenjelwa kokusebenza. Amabhithi wokuphaka, amabhithi eziqhuqhu, namabhithi okugxila amele izimo ezithile ze-DTH zemibandela ethile yokuzithokozisa nezincwadi zephrojekthi. Izinhlelo zokwakha ezinhle ze-DTH percussion drilling zisebenza kakhulu emsebenzini wokubhoboza i-micropile, lapho amathunhu anobubanzi obuncane ukuya kokdeep aqhuba ngokushesha phakathi kwamatshe ahlulekile nezikhukhula ezingasekho. Imisebenzi yokubuyisela izisekelo isebenzisa ubuchwepheshe be-DTH emsebenzini wokufaka ezingeni nokuhlola amandla. Ukuhlola izindawo zemvelo kanye nokubona ukufaka emithonjeni yokuhlanza kuvame ukusebenzisa izindlela ze-DTH ukuze kuqedwe ngokushesha ubude bokuqala futhi kutholakale izibonelo ezimele ezivela ezindaweni ze-geological ezifanele. Abaphethe ezithuluzini kumele bakhumbule ukuhlela kahle imihlahlandlela yokugcina, bahlola ukuphuka kwe- bearing nokufaniswa kwezibambo, futhi bentule izinhlelo zokujikeleza ezivamile ukuze bathole ukusebenza okuwusizo kuyo yonke imikhankaso yokubhoboza imikhankaso ye-geotechnical enzima.