Cov qauv sib txawv: Sab saum toj thiab sab qis tsis yog- cov khoom siv hlau nplaum sib nqus muaj cov qauv zoo ib yam, ob qho tib si suav nrog lub cev laum, laum me ntsis, thiab cov yeeb nkab txuas. Qhov sib txawv tseem ceeb nyob hauv cov khoom sib nqus. Lub laum pas nrig lub cev thiab lub laum me ntsis ntawm lub siab tsis yog - sib nqus laum pas nrig tsis yog- sib nqus, thaum lub laum me ntsis thiab txuas cov yeeb nkab ntawm qis qis tsis yog - sib nqus laum pas nrig tsis yog - hlau nplaum.
Daim ntawv thov sib txawv: Sab saum toj thiab qis dua tsis yog- sib nqus drill rods kuj txawv ntawm lawv daim ntawv thov ntau yam. Feem ntau, sab sauv tsis yog - cov khoom siv hlau nplaum feem ntau yog siv rau qhov ntiav lossis qhov chaw geological tshawb nrhiav, xws li ntsuas cov av thiab cov qauv dej. Qes tsis yog- cov khoom siv hlau nplaum feem ntau yog siv rau kev tshawb nrhiav geological sib sib zog nqus, xws li kev tshawb nrhiav thee thiab tshawb nrhiav hauv av.
Kev Ua Haujlwm Ua Haujlwm Sib txawv: Sab saum toj thiab qis dua tsis yog- sib nqus drill rods kuj sib txawv hauv kev ua haujlwm. Feem ntau, sab sauv tsis yog - sib nqus laum pas nrig muaj qhov nrawm nrawm dua, tab sis lawv muaj qee qhov kev txwv hauv kev tshawb nrhiav tob. Qhov qis dua uas tsis yog- sib nqus laum pas nrig siv txoj kev sib txuas uas muaj zog dua thiab hloov tau yooj yim dua, tab sis nws qhov drilling ceev kuj qeeb dua.
Hauv cov ntsiab lus, kev xaiv ntawm sab sauv thiab sab qis uas tsis yog- sib nqus drill rods hauv kev tshawb nrhiav tiag tiag yog nyob ntawm qhov xwm txheej tshwj xeeb. Yog tias qhov kev tshawb nrhiav qhov tob tsis tob heev thiab cov txheej txheem yog rhiab heev rau kev cuam tshuam sib nqus, ces lub siab tsis yog -magnetic laum pas nrig yog qhov kev xaiv zoo; Yog tias qhov kev tshawb nrhiav qhov tob yog qhov sib sib zog nqus thiab qhov kev tshawb nrhiav qhov tseeb yog qhov yuav tsum tau ua, ces qhov qis dua tsis yog -Magnetic laum pas nrig tuaj yeem txiav txim siab.
