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在地压大的条件下,开采倾角为0°～75°的连续厚矿体时,试验研究了交叉扇形深孔垂直柱式崩矿和往下盘巷道放矿的分段崩落法。此法的特点是利用交叉扇形深孔分阶段往垂直补偿空间崩落垂直柱和通过布置在下盘岩石中的倾料底柱放矿。用 HKP-100M型潜孔钻机从布置在靠近要崩落的垂直柱边
Under the condition of large ground pressure, when the continuous thick ore body with dip angle of 0 ° ~ 75 ° is mined, the vertical column colluvium with cross fan-shaped deep hole and subsided caving method of ore draining down the roadway are studied. This method is characterized by the use of intersecting fan-shaped deep holes to vertically compensate for the spatial collapse of the vertical column in stages and by the dumping pillars arranged in the lower plate rock. With HKP-100M DTH drilling rig from the arrangement in the vertical column to be caving edge