王家岭煤矿辅助运输巷失稳原因分析与治理技术

Reasons and Control Technology of failure roadway in Wangjialing Mine

厚煤层开采时回采巷道很多都布置在煤层之中,在进行双巷掘进布置工作面时,辅助运输巷受工作面明显采动影响,由于煤巷顶板整体稳定性不强,易于出现巷道失稳现象。王家岭煤矿首采面辅助运输巷由于受到采动影响发生局部冒落失稳,在分析此类回采巷道失稳特征及影响因素的基础上,得出导致巷道冒顶的主要因素,并进一步有针对性的提出相应的处理方案,并给出相应的预防措施,尽量避免此类冒顶的发生。

Based on many mining roadways were located in coal seam during thick seam mining,the auxiliary roadwaywould be affected by mining facon in double tunneling working faces. Instability of roadway woulf occur becauseofweak overall stability of coal roadway roof. Local caving instability occurred in the first mining face due to mining influence. Main factors leading to roof fall were concluded on the basis of its instability characteristics and influence oactors.Corrsponding treatment scheme and precautionary measures were put forwar.