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焦作市白庄煤矿,年生产能力28万吨,煤层平均厚4.5米,倾角14°左右,直接顶为泥质砂岩或粉砂岩,采用走向长壁倾斜分层、分段爆破落煤,过去也坚持老塘人工洒水,但因水量小也不均匀,采下分层时假顶漏矸、煤尘飞扬现象难以解决。在1989年初采用了在上顺槽向采空区钻孔静压注水以后,再生顶板锈结良
Bazhuang coal mine in Jiaozuo City, the annual production capacity of 280,000 tons, the average thickness of 4.5 meters coal seam, the dip angle of about 14 °, directly top muddy sand or siltstone, using longwall inclined stratification, sub-blasting coal fall, the past also Adhere to Laotang artificial sprinkler, but because of the small amount of water is not uniform, mining under the false top leakage gangue, coal dust flying phenomenon difficult to solve. In early 1989 adopted in the slot along the gob hole static pressure water injection, the regeneration roof rust knot good