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马庄煤矿1962年由169队施工的勘探钻孔存在严重的封孔质量问题,该矿在1982年山西组7煤516工作面回采时曾遇到过Ⅵ-3钻孔突氺?疚木蚪轿髯?9煤622工作面溜子道过程中,在距Ⅶ-1钻孔6m处巷道下帮部底板发生突氺,最大水量40m3/h,造成掘进头被淹停头。通过对封闭不合格钻孔的封孔情况、导氺性、突氺机理分析,突氺水源为太原组1-4灰岩承压水,采用巷道注浆封堵,突氺钻孔留设防水煤柱治理方法?滤Ч锏?100%,保证了工作面正常安全生产。
Ma Zhuang coal mine in 1962 by the 169 construction of the drilling rig there is a serious problem of sealing quality, the mine in 1982, Shanxi Group 7 seam 516 face encountered met VI-3 drilling sudden 氺? Guilty wood tadpoles In the process of slippery road of 922 coal 622 face, the bottom of the lower part of the roadway 6m away from Ⅶ-1 bore a sudden break, the maximum water volume is 40m3 / h, causing the driving head to be flooded and stopped. Through the analysis of the sealing condition, guiding behavior and catastrophic mechanism of the closed failed borehole, the water source of the sudden fault is the limestone confined water of Taiyuan Formation 1 to 4, the roadway grouting is adopted to seal and the protruding borehole is left waterproof Coal pillar management method? Filter 锏 100%, to ensure the normal safe production of the face.