ʻEli pālahalaha ʻole 30″ ma lalo o ka mea hoʻomaʻemaʻe no ka pōhaku paʻakikī

Noi:
Nā ʻano paʻakikī no ka ikaika compressive kiʻekiʻe, e like me ke one pōhaku, ka shale paʻakikī, ka dolomite, ka gypsum paʻakikī, ka chert, ka granite, a pēlā aku.
Hikina Loahe mau mea hana loea i nā ʻāpana wili, e like meMea wehe lua HDD, nā mea ʻoki wili kumu, ka ʻāpana wili PDC, ka ʻāpana cone wili, ka ʻāpana cone wili tricone, nā ʻāpana tricone no nā noi like ʻole.ʻO ka noi mekahua aila, kinoea kūlohelohe, ʻimi honua, hoʻowali driectional, hana mining, ʻeli luawai wai, HDD, kūkulu ʻana, a me ke kahua.
Ma ke ʻano he hale hana wili ʻoki alakaʻi ma Kina, ʻo ka hoʻonui ʻana i ke ola hana o ka wili ʻoki kā mākou pahuhopu. Hoʻāʻo mau mākou e hoʻomaikaʻi i nā ʻāpana me nā helu komo kiʻekiʻe. ʻO kā mākou pahuhopu ke kūʻai aku i ke kūlana kiʻekiʻe me ke kumu kūʻai haʻahaʻa loa. E kōkua ka maikaʻi a me ka ʻenehana wili hikina mamao iā ʻoe e hoʻokō i nā mea hou aku!