AmaHammer eDTH Amakhulu

Ukukh drilling nge-DTH (Down-The-Hole) hammer enkulu kumelwe kube ingxenye ebalulekile yokwakha izisekelo ezijulile zanamuhla, ikakhulukazi kumaphrojekthi adinga amazinyo amakhulu we-borehole kanye nezixazululo ezinkulu ezithwele umthwalo. Le msebenzi ihluke kakhulu ifaka phakathi ukudrila nokumba ama-boreholes amakhulu ngendlela yokusebenzisa ubuchwepheshe be-DTH obusekelwe ekuphazamiseni, okuhlinzeka ngogesi lokuhlasela ngqo ebusweni be-drill bit ngomechanism ye-hammer ephansi. Ama-hammers amakhulu e-DTH akhiwe ngokuqondile ukuze angene ezindaweni eziqinile zomhlaba, amatshe aphelile, kanye nezakhiwo ezibucayi ze-badrock ezijulile, okwenza kube ngaphezulu okubalulekile emsebenzini wokwakha ama-pile, ukudrila ama-caisson, kanye namaphrojekthi okuzinza komhlaba. Le ndlela ibalulekile ezindaweni zasemadolobheni nasezindaweni zokwakha ezigcwele lapho isizungu sokuphazamiseka kwemikhondo kufanele sincishiswe ngesikhathi kugcinwa ukunemba kokudrila kanye nokusebenza kahle. Lezi zikhala zisebenza ngokuguqula ingcindezi ye-hydraulic kanye ne-pneumatic energy zibe yizihlaseli ezisheshayo eziphula futhi ziqhekeze izinto ezingaphansi komhlaba, ezisuswa ngokuphindaphindiwe kokuhamba okuphuzile kokuhamba kwamanzi okudlula nge-compressed air, kuya ngezimo zomhlaba kanye nezidingo zephrojekthi. Izicelo zokukh drilling nge-DTH hammer enkulu zifaka phakathi izigaba ezahlukene zokwakha izisekelo, kuhlanganisa ukudala izisekelo ezijulile zesikhala, ama-pile amakhulu anemigomo ethile phakathi kuka-1.5 kuya ku-4 meters noma ngaphezulu, nokwakha izindonga zokuhlola izisekelo ukuze kusekelwe izakhiwo eziphansi. Le ndlela yokudrila ibalulekile emaphrojekthini adinga izisekelo ezijulile ezihamba phansi kwendawo ephathekayo yokuphazamiseka noma kube kakhulu lapho ama-casing avamile nomjovo we-kelly-bar ebonakala engasebenzi. Lo mshini osebenza kahle kakhulu ezimweni ezinzima ze-geological ezifana ne-gravels eziqinile, ama-cobbles, izendlalelo ezihlotshisiwe, amatshe aphukile, nezindawo zokumba ezihlanganisiwe lapho ukudrila kwe-augular okujwayelekile noma izinhlelo ezijikelezayo ziba nemikhawulo yokukhiqiza. Ama-hammers amakhulu e-DTH angafinyelela izinga lokudrila elingu-2 kuya ku-6 meters ngehora kuya ngokuya ngekhono lamatshe, ubhardness bezakhiwo, kanye nespecifics ye-hammer, okuhlinzeka ngezixazululo zokudrila ezikhuthele ezinciphisa isikhathi sokwakhiwa kwezisekelo. Abasebenzisi kanye nabadayisi abathumela ama-hammers amakhulu e-DTH kufanele bagcine ukwazisa izimo zomhlaba ngokusebenza kwangaphambi kokudrila, ukuhlola isimo se-geological, kanye nohlu lwe-geotechnical ukuze baphakamise usayizi we-hammer ofanele, ukukhetha ibit, izincazelo ze-drilling fluid, nezinga lokuhamba. Ukuzinza kwe-borehole kanye nokuphathwa kwe-drilling fluid kubaluleke kakhulu ezinhlelweni ezinkulu ze-DTH, ikakhulukazi emhlabeni obuthaka noma ezimo ezingazinzile lapho izinhlelo ezifanele zokusekelwa—njenge-bentonite slurry enesisindo noma i-casing yesikhashana—kubalulekile ukuvimbela ukuwa kwe-borehole kanye nokugcina ukuma okuqondile. Le teknoloji ihlanganisa kahle nezinsiza zokwazisa ezihamba phansi, ukufakwa kwe-piezometer, kanye nezinhlelo ze-quality assurance eziqinisekisa ubuqotho be-borehole ngaphambi kokufakwa kwe-cage ye-pile kanye nezenzo ze-tremie zama-concrete. Izinsiza zokudhila nge-DTH hammer enkulu ziqhubeka nezinto ezihlanganisa izikhala zokuthola ezibekwe kumahhashi ezitrobhu zefektri kuya kuzinhlelo eziphathekayo ezikwazi ukusebenza ezindaweni ezikwazi ukhululiwe ngendawo encane, ukuqinisekisa ukufaneleka ezindaweni ezihlukene zephrojekthi kanye nezinqaba zamaphrojekthi phakathi nezinyathelo zokwakha izisekelo.