软岩大巷断面形式选择及支护参数研究

Research on cross-section form selection and supporting parameters of soft rock main roadway

塔拉壕煤矿2-#煤层西翼辅运大巷埋深134 m,顶板为泥岩和粉砂岩,岩性较弱,巷道支护困难。通过数值模拟对比矩形断面巷道与直墙拱形断面巷道的顶板破坏范围及特点,确定西翼辅运大巷采用矩形断面,给出了巷道的合理支护参数。

The buried depth of the auxiliary transport roadway in the west of No.2 seam in Talahao Coal Mine was 134 m,and the roof was composed of mudstone and siltstone,whose lithology was weak,and the roadway supporting was difficult.The roof destruction range and characteristics of rectangular cross-section roadway and those of arched cross-section roadway with vertical walls were compared by numerical simulation,which selected the rectangular crosssection as the cross-section form of the auxiliary transport roadway,and the reasonable supporting parameters of the roadway were worked out.