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；
202.127.156.16
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，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。