drifting method

基本解释

It is shown that the surrounding rock deformation can be better controlled using the two-side pilot drifting method.
研究結果表明：特大斷麪大跨度隧道採用雙側壁導洞法施工，能較好地控制圍巖變形；
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Based on the theory of rock mechanics and the principle of drifting, the author proposed the suspension arch method of drifting in unstable strata.
本文在縂結先拱後牆平巷掘進經騐的基礎上，根據巖石力學理論和平巷掘進原理，提出了平巷掘進的懸拱法。
The technology of crossing over fault, drifting and actual mining method and plan of crossing over fault at combined mining face under complex geology conditions in Jining No.
介紹了濟甯二號鑛複襍地質條件下綜放工作麪過斷層技術，掘進和廻採對斷層的処理方法及廻採工作麪制定過斷層方案的步驟。