litaba

Tseba tsoelo-pele ea morao-rao ea theknoloji ea drill drill le mekhoa ea khetho! Tataiso ena e arola mekhoa ea bohlokoa, litekanyetso tse khothalelitsoeng, le maano a lokiselitsoeng ho ntlafatsa ts'ebetso ea ho cheka mefuteng e fapaneng. E nepahetse bakeng sa litsebi tse batlang ho matlafatsa ts'ebetso le ho fokotsa litšenyehelo tsa ho cheka seliba se tebileng.

Tlhokahalo ea ho cheka ka mokhoa o otlolohileng (HDD) e ntse e phahama, e tsamaisoa ke ho phahama ha litlhoko tsa puisano le matla. Ha likonteraka tsa HDD li tobana le mathata libakeng tse mafika, ho bohlokoa ho ikamahanya le maemo ana. Ho sebelisa lisebelisoa tse tsoetseng pele joalo ka lihamore tsa pneumatic down-the-hole ho ka fokotsa nako ea ho cheka haholo le ho ntlafatsa ts'ebetso. Maano a bohlokoa, ho kenyelletsa le ho boloka ts'ebetso ea lisebelisoa le bohloeki, khetho e hlokolosi ea lisebelisoa, le moralo o phethahetseng oa merero, ke tsa bohlokoa bakeng sa ho hlola litšitiso le ho netefatsa katleho ea morero sebakeng sena sa tlholisano.

Tianjin Grand Construction Machinery Technology Co., Ltd e sa tsoa phatlalatsa tlhahlobo ea mefuta e tloaelehileng ea ho hlōleha le khetho e utloahalang ea likotoana tsa PDC tse sebelisoang merafong ea mashala. Tshekatsheko e fana ka ditlhaloso tsa bohlokwa mabapi le ho hloleha ho tlwaelehileng ho hlahellang merafong ya mashala le ho kgethwa ha dikotoana tse loketseng tsa PDC ho bebofatsa ditaba tsena. Patlisiso ea k'hamphani e ikemiselitse ho matlafatsa polokeho le tlhahiso mesebetsing ea merafo ea mashala ka ho sebelisa theknoloji e nepahetseng ea PDC bit. Tlaleho ena e lebelletsoe ho ba mohloli oa bohlokoa bakeng sa basebetsi ba merafo ea mashala le litsebi tsa ho cheka, ho ba fa leseli la bohlokoa ho ntlafatsa ts'ebetso le katleho ea ts'ebetso ea bona.

Tseba hore na moreki oa rona o atlehile ho etsa projeke ea ho lekola mobu naheng ea Egepeta joang, a sebelisa likotoana tsa ho phunya li-tri-cone tse tsoetseng pele ho tsamaisa libopeho tse rarahaneng tsa jeoloji. Ka ho cheka hantle le ho beha leihlo ka nepo, ba fihletse liphetho tse tšepahalang, ba behela indasteri e lekanyelitsoeng. Morero ona ha oa matlafatsa ts'ebelisano ea rona feela empa hape o totobalitse karolo ea bohlokoa ea lisebelisoa tsa litsebi lipatlisisong tsa mobu. Tsoela pele ho bala leeto le leseli ho tsoa mosebetsing ona o babatsehang!

Ho fapana le li-drill tse tloaelehileng, tse lahleheloang ke matla ha matla a matla a ntse a feta har'a likhoele tsa ho cheka, lihamore tsa DTH li beha mochine o nang le tšusumetso ka ho toba karolong ea ho cheka, e ntlafatsa haholo lebelo la ho cheka le ho nepahala. Mokhoa ona o sebetsa hantle haholo ho hlola liqholotso tse entsoeng ka lera, tse robehileng, kapa tse sa lekanang tsa jeoloji. Ntle le moo, lits'ebollo tsa sejoale-joale joalo ka mekhoa e se nang li-valve le meralo e tsoetseng pele ea kabo ea moea le ho feta ho ntlafatsa ts'ebetso le ho tšoarella ha lits'ebetso tsa DTH.

Ho tloha ha mochine oa pele oa ho phunya li-roller cone o tsoa ka 1909, likotoana tsa li-roller cone ke tsona tse sebelisoang ka ho fetisisa lefatšeng ka bophara. Likotoana tsa ho cheka tsa Tricone hajoale ke karolo e sebelisoang haholo ea ho cheka mesebetsing ea rotary. Mofuta ona oa ho phunya o na le meralo e fapaneng ea meno le mefuta e nang le lefito, kahoo o khona ho ikamahanya le mefuta e fapaneng ea libopeho. Ts'ebetsong ea ho cheka, lebelo le khotsofatsang la ho phunya le litšoantšo tse nyenyane li ka fumanoa ka ho khetha ka nepo sekontiri sa rolara se nang le sebopeho se loketseng ho ea ka thepa ea sebopeho se ntseng se phunngoa.

PDC drill bits ke khutsufatso ea polycrystalline diamond composite disc drill bit, e tsejoang hape e le polycrystalline diamond cutting block drill bit kapa composite disc tooth drill bit. Ho tloha ha American General Electric Company e hlahisa li-block blocks tsa PDC 'me e ntlafalitse karolo ea pele ea ho cheka ea PDC ka 1973, likotoana tsa ho cheka tsa PDC li' nile tsa sebelisoa haholo ho cheka oli ka lebaka la melemo ea tsona ea lebelo la ho cheka ka potlako, bophelo bo bolelele le litšoantšo tse phahameng. Hoo e ka bang baetsi bohle ba li-drill ba amohetse theknoloji ena mme ba qala ho hlahisa letoto la bona la li-drill tsa PDC.

Feme ea rona e ikemetseng e fana ka lisebelisoa tsa boleng bo holimo tsa li-tri-cone ho barekisi ba merafo khoeli le khoeli, ho kenyeletsoa liliba tsa metsi, liliba tsa oli le merafo. Kajeno, re kenya likotoana tsa li-tri-cone bakeng sa liliba tsa metsi.

Haeba u le khoebong ea ho cheka liliba kapa tsa merafo, ua tseba bohlokoa ba ho ba le lisebelisoa tse nepahetseng. Sesebelisoa sa bohlokoa seo u ka bang le sona ka har'a arsenal ea hau ke "tri-cone drill bit". Likotoana tsena tsa ho cheka li bohlokoa bakeng sa ho cheka ka har'a libopeho tsa majoe a thata le ho phethela mosebetsi ka nepo. Tataisong ena, re tla akaretsa tsohle tseo o hlokang ho li tseba mabapi le li-drill tsa tricone, ho kenyelletsa le mefuta ea tsona, ts'ebeliso le melemo.

Ha ho tluoa tabeng ea ho cheka, ho ba le lisebelisoa tse nepahetseng ho ka etsa hore morero oa hau o atlehe. Liindastering tsa merafo le tsa kaho, likhetho tse peli tse tsebahalang tsa ho cheka ke li-tri-cone drill bits le lihamore tsa DTH (down-the-hole). Lisebelisoa tsena ka bobeli li na le melemo le lits'ebetso tse ikhethang, 'me ho utloisisa liphapang tsa tsona ho ka u thusa ho etsa khetho e ntle ka ho fetisisa bakeng sa litlhoko tsa hau tsa ho cheka.