Rov qab ncig (RC) drilling thiab core drilling yog ob qho tib si siv hauv kev tshawb nrhiav thiab kev tsim khoom drilling, tab sis lawv txawv ntawm ntau yam tseem ceeb:
Qauv rov qab: Hauv RC drilling, lub hom phiaj tseem ceeb yog kom rov qab tau cov pob zeb los yog cov txiav uas tsim thaum lub sij hawm drilling. Cov kua dej drilling (feem ntau yog huab cua lossis dej) nqa cov txiav los ntawm txoj hlua laum mus rau saum npoo rau kev sau thiab tshuaj xyuas. Hauv qhov sib piv, cov tub ntxhais drilling tshwj xeeb yog tsim los kom rov qab cylindrical pob zeb cores los ntawm subsurface. Ib tug tub ntxhais chim txuas rau hauv qab ntawm lub laum txoj hlua captures thiab khaws cov tub ntxhais cov qauv raws li lawv tau muab rho tawm los ntawm lub borehole.
Qauv Zoo: Core drilling feem ntau muab cov qauv zoo dua piv rau RC drilling. Cov qauv tseem ceeb khaws cia cov stratigraphy thiab cov qauv ntawm kev tsim, ua rau lawv zoo tagnrho rau cov ncauj lus kom ntxaws geological tsom xam, suav nrog kev txheeb xyuas cov pob zeb hauv av, kev txiav, thiab cov qauv rau kev kwv yees cov peev txheej. RC drilling, thaum ua tau zoo rau kev nrawm nrawm thiab cov qauv sau, tuaj yeem tsim cov khoom tawg lossis crushed uas tsis tsim nyog rau kev soj ntsuam ntxaws.
Txoj Kev Drilling: RC drilling feem ntau yog siv lub qhov rauj los yog pneumatic drilling rig los tsav lub laum me ntsis rau hauv av. Cov kua dej drilling yog ntws los ntawm txoj hlua tho thiab me ntsis, nqa cov txiav mus rau saum npoo. Nyob rau hauv cov tub ntxhais drilling, ib tug tub ntxhais chim yog txuas mus rau hauv qab ntawm lub laum txoj hlua, thiab lub laum me ntsis txiav ib tug cylindrical core qauv los ntawm kev tsim. Cov qauv tseem ceeb tau muab rov qab los ntawm ib ntus nres qhov drilling kom rub cov tub ntxhais chim thiab rho tawm cov tub ntxhais.
Daim ntawv thov: RC drilling feem ntau yog siv rau hauv kev tshawb nrhiav thiab mining, nrog rau qee qhov kev siv ib puag ncig thiab geotechnical drilling qhov twg yuav tsum tau drilling ceev thiab cov qauv sau. Core drilling yog dav siv hauv kev tshawb nrhiav geological, kev ntsuam xyuas cov peev txheej ntxhia, thiab kev tshawb nrhiav engineering qhov twg cov qauv zoo, cov qauv tsis zoo yog qhov tseem ceeb rau kev txheeb xyuas thiab kev txhais lus.
Zuag qhia tag nrho, thaum ob qho tib si RC drilling thiab cov tub ntxhais drilling yog cov cuab yeej tseem ceeb hauv kev tshawb nrhiav thiab kev tsim cov drilling, lawv ua haujlwm sib txawv thiab raug xaiv raws li qhov project hom phiaj, geological tej yam kev mob, thiab cov qauv xav tau.
