西北地区煤矿充填开采防治底板突水的可行性研究

Feasibility Study of Coal Mine Stope Backfill Mining to Prevent Floor Groundwater Bursting in Northwest Region

以西北地区天誉四矿9号煤层为例,研究了奥灰含水层的富水性能和底板隔水层的分布规律,并以突水系数等值线图对安全开采可行性进行了评估,通过采用矸石充填开采技术,有效地预防了底板突水的危险,大大降低了开采成本,具有很好的应用推广价值。

Taking No.9 coal seam of Tianyu No.4 Coal Mine in Northwest China as an example, the water-rich property of Ordovician lime aquifer and the distribution law of floor waterproof layer are studied, and the feasibility of safe mining is evaluated with the contour map of water inrush coefficient. By adopting the technology of gangue filling mining, the danger of floor water inrush is effectively prevented, the mining cost is greatly reduced, and the application and popularization value is very good.