Tsev > Xov xwm > Ntsiab lus
Ob moos tsuas Drilling tshuab
Mar 04, 2016

Drilling tshuab tsuas yog feem ntau ua ntawv thov mus rau ob lub ntsiab:

Firstly, drilling kev siv rau tus tsuas ntau lawm mus los, uas yog aims los nrhiav tau qhov chaw ntawd ib ntxhia, kuj zoo thiab drilling ntau lawm. Piv txwv, kev tshawb kawm txog tsuas thee.

Secondly, drilling pob zeb blasting rau mines deg siv tshuab nws txawv loj mus raws li lub qhov taub tos ntsoov xav pom qhov luaj li cas, thiab xws li dej num rau me me thiab qhov tos phua thiab loj ntau lawm. Tsuas underground (pob zeb hard) siv ntau hom laum cav tov nyob lub hom phiaj yam, xws li ntau lawm, bolting, cabling, thiab tunnelling.

Khoom