“三软”煤层回采巷道层位的合理确定

Rational Determination of Horizon at Actual Mining Roadway with "Three Soft" Coal Seam and its application

在电机房煤矿"三软"煤层3#煤层301工作面生产地质条件基础上,对回采巷道应力分布情况进行了力学分析,结合顶板下沉量和不同岩性的关系,确定工作面回采巷道的合理层位,即沿煤层顶板砂岩掘进,取得较好的巷道支护效果。

Based on the geological condition of 301 working face at No.3 coal seam in colliery with ＂three soft＂ seam,the author makes a mechanical analysis of the stress distribution in actual mining roadway and determines the rational roadway horizon according to the relations between roof sinkage and different lithology,which has achieved good support effects.