Based on the ground exploration data of 3220 working face and the results of underground water prevention and control project in Xutuan coal mine, comprehensively evaluates the safety of mining under the aquifer. The results show that the main water-filled aquifer in the 3220 working face is the coal seam fissure aquifer of the coal seam roof and the "four-inclusive". The former does not pose a threat to the mining of the working face. The latter is weak in water and can be drained or even completely drained.The minimum coal(rock) column height of the working face design is much larger than the calculated height, so the comprehensive evaluation results show that the mining of the 3220 working face under the aquifer is safe and feasible.
water prevention project
Xutuan coal mine