Ekolu ano o ka wili pohaku

ʻEkolu ʻano o ka ʻeli pōhaku

ʻEkolu mau ʻano o ka wili pōhaku - ʻo Rotary drilling, DTH (lalo o ka lua) drilling a me Top hammer drilling. He kūpono kēia mau ala ʻekolu no nā ʻoihana mining a me nā hana wili maikaʻi, a ʻo ke koho hewa ʻana e lilo i pohō nui.

ʻO ka mea mua, pono mākou e ʻike i nā loina hana o lākou.

ʻO ka wili ʻana

Ma ka wili ʻana, hāʻawi ka rig i ka nui o ke kaomi shaft a me ka rotary torque. ʻO ka bit drill a hoʻololi i ka pōhaku i ka manawa like, e hoʻoikaika ana i ke kaomi paʻa a me ka ikaika ma luna o ka pōhaku. Kaʻawili a wili mau nā ʻāpana i lalo o ka lua e haʻihaʻi ai ka pōhaku. Hoʻopili ʻia ka ea kaomi ma lalo o kahi kaomi a me ka kahe kahe mai ka nozzle ma loko o ka paipu drill, e hoʻomau i ka puhi ʻana o ka slag mai lalo o ka lua ma ka annular space ma waena o ka paipu drill a me ka paia holoʻokoʻa i waho.

Iho i ka lua (DTH).

ʻO ka wili ʻana ma lalo o ka lua, ʻo ia ka hoʻokuʻu ʻana i ka hāmare ma hope o ka bit drill e ka ea kaomi ma o ka paipu drill. Paʻi pololei ka piston i ka bit, ʻoiai ke hāʻawi pololei a paʻa ka hammer cylinder waho i ke alakaʻi o ka bit drill. ʻAʻole nalo ka hopena o ka ikehu i nā hono a ʻae ʻia no ka ʻeli ʻana i ka percussion hohonu.

Eia kekahi, ʻoi aku ka ikaika o ka hopena i ka pōhaku ma lalo o ka lua, ʻoi aku ka maikaʻi, a ʻoi aku ka pololei ma mua o nā ʻano hana ʻē aʻe o ka hana wili.

A ʻoi aku ka maikaʻi o DTH no ka lua nui o ka ʻeli pōhaku paʻakikī, kūikawā no ka paʻakikī pōhaku ma luna o 200Mpa. Eia nō naʻe, no ka pōhaku ma lalo o 200 MPa, ʻaʻole ia e pau ka ikehu wale nō, akā i ka hana haʻahaʻa haʻahaʻa hoʻi, a me ke kapa koʻikoʻi i ka drill bit. No ka mea, ʻoiai ʻo ka piston o ka hāmare, ʻaʻole hiki i ka pōhaku palupalu ke hoʻopaʻa piha i ka hopena, e hoʻohaʻahaʻa loa i ka pono o ka wili a me ka slagging.

ʻO ka wili hāmare kiʻekiʻe

ʻO ka ikaika percussive o ka wili hāmare kiʻekiʻe i hana ʻia e ka piston o ka paila i ka hydraulic drilling rig, ua hoʻouna ʻia i ka drill bit ma o shank adapter a me drill pipe.

ʻO kēia ka ʻokoʻa ma waena o DTH drilling. I kēia manawa, hoʻokele ka ʻōnaehana percussion i ka ʻōnaehana wili. Ke hiki aku ka nalu kaumaha i ka bit drill, hoʻouna ʻia ka ikehu i ka pōhaku ma ke ʻano o ke komo ʻana. ʻO ka hui pū ʻana o kēia mau hana e hiki ai ke hoʻoheheʻe i nā lua i loko o ka pōhaku paʻa, a ʻo ka mea hoʻoheheʻe ea e hana wale i ka wehe ʻana i ka lepo a me ka slagging i ka wili hāmare luna.

ʻO ka hui pū ʻana o kēia mau hana e hiki ai ke hoʻoheheʻe i nā lua i loko o ka pōhaku paʻa, a ʻo ka mea hoʻoheheʻe ea e hana wale i ka wehe ʻana i ka lepo a me ka slagging i ka wili hāmare luna.

ʻO ka ikehu hopena i hoʻonui ʻia me ka pinepine hopena e hana pū i ka puka percussive o ka drifter. Eia nō naʻe, maʻamau, hoʻohana ʻia ka wili hāmare kiʻekiʻe no ka puka anawaena 127mm kiʻekiʻe, a me ka hohonu o ka lua ma lalo o 20M, ka mea i ka hana kiʻekiʻe.