3_222工作面突水灾害成因与治理技术

Water Bursting Genesis and Harnessing Tech nology of 3_222 Working Face

通过对第四系“四含”长观孔、“太灰”长观孔、“奥灰”长观孔的水位观测及突水水质的化验,认为皖北矿务局祁东煤矿-420水平3222工作面发生的(涌水量达1670m3/h)特大突水灾害的突水水源应来自第四系第四含水层,其突水通道可能是:①工作面上方隐伏存在古河床切割的深沟,②工作面中存在垂向导水裂隙带,使“四含”水下泻所致。通过采用强排、截流、拔架及堵源的治理方案,恢复了矿井生产。

Through water level observation on long term observation drill holes of ″4t h Aquifer″,″Limestone of Taiyuan Formation ″,″Ordorician limestone″ in Quaternary sys tem and testing of bursting water quality, consider that source of most bursting water (outflow of water 1670 m3/h) occurred in th e 3222 working face of -420 level in Qidong coal mine of Wanbei mining bureau come from the fourth aquifer of Quaternary system, an d the water bursting route may be: ①the deep channel in the ancient riverbed above work ing face,②perpendicular fracture zone of w ater conduction above working face. Throug h utilization on harnessing methods, such a s dam flow, block up source, and so on, the p roduction of coal mine has been recovered.