Izigodi ze-PDC

Ama-PDC drag bits ayizinsiza ezibalulekile zokubhola esetshenziswa kakhulu emkhakheni wezisisekelo kanye nezifundo ze-geotechnical. Lezi zinhlelo zokubhola ze-polycrystalline diamond compact zinezingxenye ezisindayo ezisindayo kunokubhoda okukhulayo, okwenza zibe nemiphumela emihle kakhulu emasikweni okubhola kwama-rotary emisebenzini emijulile yezinhlaka. Ama-PDC drag bits aklanyelwe ukuhluza nokuqumisa izakhiwo zezintaba ngokuqhuba, ekusizeni ukususa izinto ngezinga lokuphakama njengoba ibhodi yokubhola ihambisa ingcindezi engezansi nokuqhuba okukhulayo. Ngokwenkambiso yokusebenza kwezisisekelo ezijulile, lawa ma-bits abalulekile ekubholeni imikhondo yokuhlola, ukusampula umhlabathi, kanye nezifundo zokubhala phakathi nezikhathi zokwakha lapho abathengisi kufanele bahlolisise izimo ezingaphansi komhlaba ngaphambi kokwakhela ama-pile, ukufakwa kwe-cassion, noma ezinye indlela zokwakha ezijulile. Ubuchwepheshe be-PDC drag bits buhlale buphumelelayo ekubholeni ezinkulu zezinhlaka zomhlabathi nezintsizwa ezivame ukuhlangabezana emkhakheni wezisisekelo. Lawa ma-bits akhombisa ukusebenza kahle ematsheni athambile kuya kwelikhadi eliphakathi, chalk, marl, kanye nezakhiwo zeklayi ezinamandla ezivame ukujika ezindaweni ezijulile. Abaklami bezisisekelo nabasebenzi bokubhola basebenzisa ama-PDC drag bits uma ukumbola kwe-rotary kunikeza izinzuzo phezulu kweziqeshana noma izindlela zethoyili, ikakhulukazi lapho ukusampula okuqhubekayo nokubhaliswa kwejolii kubalulekile. Izakhi ze-polycrystalline diamond zokusebenza ziqinisekisa ukumelana okukhulu nokuma kwezinga lokushisa uma kuqhathaniswa nezinsiza zensimbi ezivamile, kukhulisa impilo yokusebenza ende kanye nezinga lokungenela eliphakeme ezakhiweni zejolii ezikhanyayo. Uhlaka lwe-PDC drag bits luhlangabezana nezimo zokubhola ezihlukahlukene—kusuka kwi-sediments ezincane kuye emastini e-fractured—kukwazi ukuthola izici ezilungile zemoto zomhlaba ukuze abahloli bezwe bakhethe izimo ezihambisana nezimo ezingaphansi komhlaba. Ezinhlelweni zokwakha izisekelo, ama-PDC drag bits asekelwe emisebenzini ebalulekile yokwakha ngaphambi kokuqala okuhlanganisa ukuhlolwa kwezindawo ze-geotechnical, ukukala amanzi aphansi, kanye nokuhlola amandla okuphakela ama-pile, imikhono ye-diaphragm, kanye nezinye izinhlelo ezijulile. Lezi zinsiza zokubhola zisebenza kanye nemishini yokubhola ye-rotary, imishini yokusampula, kanye nezinhlelo zokubhalisela izimbobo ukuze zithole izinsiza zomhlaba nezinhlaka ezikhombisa izinhlelo zokwakha. Abaklameli bethembele kuma-PDC drag bits ukuze kube nokuhamba kahle kumazinga ahlaziyayo lapho ama-cobbles, ama-boulders, noma izinkumbulo ezikhanyayo zingahlangana ngaphezulu komqolo ophambili wezokuqhuba. Idatha eqoqiwe ngokusebenzisa ama-PDC drag bits yokubhola ithonya ngqo izinqumo zokwakha izisekelo mayelana nezinsiza zokukhetha, ukuzifaka, ukwakha ukumelana nezinsiza, kanye nezidingo zokuthuthukisa umhlaba. Umsebenzi wesimanje wezisekelo usanda kudinga lawa ma-bits akhethekile njengoba amaphrojekthi okwakha ezandleni akhuphuka ezindaweni ezinzima nezindawo zedolobha zidinga izindlela zokubhola ezingenayo uthuli nezwi. Ama-PDC drag bits ahlola ubuchwepheshe obufakazela ukuxhumanisa ukumbola kwe-geotechnical yokuhlola nokwakheka kwezisekelo, ukuhlinzeka ngokuqonda okujulile kwezansi komhlaba okuqinisekisa ukuphepha, ukusebenza kahle, kanye nezinhlelo ezijulile ezishibhile.