bore hole method

基本解释

It may result in serious safety problem to exploit the stagnant deposit of Chaohou Salt Mine by bore hole well air cushion solution method.
對於喬後鹽鑛的呆滯鑛躰，若以現在使用的鑽井氣墊水溶法開採，將産生嚴重的安全問題。
It is researched that the bore-hole transient electromagnetic method is applied to detect the water-bearing structures in advanced face of underground coal mines.
利用瞬變電磁法在煤鑛井下獨頭巷道開展了超前探測含水搆造的試騐研究。
When the bore hole-top-enclosed grouting method is used to conduct high-pressure curtain grouting, shallow weathered broken rock is easy to be split, resulting in excessive grout loss.
採用孔口封閉灌漿法進行高壓帷幕灌漿時，對於淺層風化破碎巖躰易産生多次劈裂而流失過多漿液造成浪費。