drifting method

基本解釋

It is shown that the surrounding rock deformation can be better controlled using the two-side pilot drifting method.
研究結(jié)果表明：特大斷面大跨度隧道采用雙側(cè)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.
本文在總結(jié)先拱后墻平巷掘進經(jīng)驗的基礎上，根據(jù)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.
介紹了濟寧二號礦復雜地質(zhì)條件下綜放工作面過斷層技術(shù)，掘進和回采對斷層的處理方法及回采工作面制定過斷層方案的步驟。