In order to realize the safe and efficient mining of fully mechanized mining face in coal mine,the water filling fac-tors of the 814 working face are obtained by analyzing the water filling source,water flushing channel and water filling inten-sity of 814 working face in Huangling No.1 Coal Mine,and the water inrush of 814 working face is predicted by"dynamic and static water combination method".The results show that:The fissure water in the lower section of Zhiluo Formation is the direct water filling source of the working face,which has a great influence on the water filling of the working face.Before mining,it is necessary to drain the sandstone aquifer in the middle of the Yan'an Formation and the sandstone fissure aqui-fer in the lower section of the Zhiluo Formation on the working face to eliminate the hidden danger of water damage to the 814 working face caused by the overlying direct water filling source.During the mining of the working face,the normal water inrush is 60.4 m3/h,and the maximum water inrush is 84.7 m3/h.
关键词
充水因素/充水水源/涌水量预测/大井法/廊道法
Key words
water filling factor/water filling source/water inrush prediction/large well method/corridor method
维普
万方数据