Mitundu Itatu Yakubowola Mwala

Mitundu Itatu Yakubowola Mwala

Pali njira zitatu zobowola miyala - kubowola mozungulira, DTH (pansi pa dzenje) ndi kubowola nyundo Pamwamba. Njira zitatuzi ndizoyenera ntchito zosiyanasiyana zamigodi ndi kubowola bwino, ndipo kusankha kolakwika kumabweretsa kutayika kwakukulu.

Choyamba, tiyenera kudziwa mfundo za ntchito yawo.

Kubowola mozungulira

Pobowola mozungulira, chowongoleracho chimapereka mphamvu yokwanira ya shaft ndi torque yozungulira. Pobowola ndi kuzungulira pathanthwe nthawi imodzi, zomwe zimayika mphamvu zonse pamwalawu. Tinthu tating'onoting'ono timazungulira ndikugaya mosalekeza pansi pa dzenje kuti mwala uthyoke. Mpweya woponderezedwa pansi pa kupanikizika kwina ndi kuthamanga kwa magazi kumapopera kuchokera ku mphuno kupyolera mkati mwa chitoliro chobowola, kupanga slag mosalekeza kuphulika kuchokera pansi pa dzenje pamodzi ndi danga la annular pakati pa chitoliro chobowola ndi khoma lonse kupita kunja.

Kubowola pansi pa dzenje (DTH).

Kubowola pansi ndikuyendetsa nyundo yomwe kuseri kwa bowolo ndi mpweya woponderezedwa kudzera pa chitoliro chobowola. Pistoni imagunda pang'onopang'ono, pomwe silinda yakunja ya nyundo imapereka chitsogozo chowongoka komanso chokhazikika pakubowola. Izi zimapangitsa kuti mphamvu ya mphamvu isatayike m'malo olumikizirana mafupa ndikupangitsa kubowola mozama kwambiri.

Kuwonjezera apo, mphamvu yogwira ntchito imagwira pa thanthwe pansi pa dzenje, lomwe limagwira ntchito bwino, komanso lolunjika kuposa njira zina zogwirira ntchito.

Ndipo DTH ndiyabwino kwambiri pakubowola miyala yolimba, yapadera pakulimba kwa miyala yopitilira 200Mpa. Komabe, thanthwe lochepera 200 MPa silidzangowononga mphamvu zokha, komanso pakubowola kocheperako, komanso kuvala kwambiri pakubowola. Ndi chifukwa chakuti pamene pisitoni ya nyundo ikugunda, mwala wofewa sungathe kuyamwa kwathunthu, zomwe zimachepetsa kwambiri kubowola ndi slagging.

Top Hammer Drilling

Mphamvu yobowola yobowola nyundo yapamwamba yopangidwa ndi pisitoni ya mpope mu hydraulic pobowola cholumikizira, imafalikira ku pobowola kudzera pa shank adaputala ndi chitoliro chobowola.

Uku ndiye kusiyana pakati pa DTH kubowola. Pakadali pano, makina a percussion amayendetsa kuzungulira kwa makina obowola. Pamene kupsinjika maganizo kufika pobowola pang'ono, mphamvu imafalikira ku thanthwe mu mawonekedwe a bit kulowa. Kuphatikiza kwa ntchitozi kumathandizira kubowola mabowo mu thanthwe lolimba, ndipo kompresa ya mpweya imangochotsa fumbi ndi slagging pakubowola nyundo pamwamba.

Kuphatikiza kwa ntchitozi kumathandizira kubowola mabowo mu thanthwe lolimba, ndipo kompresa ya mpweya imangochotsa fumbi ndi slagging pakubowola nyundo pamwamba.

Mphamvu yamphamvu yochulukidwa ndi kuchuluka kwamphamvu palimodzi imapanga kutulutsa kwamphamvu kwa choyendetsa. Komabe, kawirikawiri, pamwamba nyundo pobowola ntchito dzenje awiri pazipita 127mm, ndi dzenje kuya zosakwana 20M, amene Mwachangu mkulu.