【摘要】 介绍了童亭煤矿“三软”、“两高”煤巷锚杆支护的工作过程 ,并针对该项技术的经济效益作了分析更多还原

【Abstract】 This paper describes the bolting support used in “Three soft” & “Two height” coal tunnel in Tongting Colliery,and also makes an analysis on the economic efficient of this technology.更多还原