巴拉素煤矿不同阶段水害问题防治技术研究

在我国西部地区煤炭资源丰富、水害问题严重。为了矿井在建设、生产等不同阶段所面临水害问题可得以有效防治，以侏罗纪煤田榆横北区巴拉素煤矿为例，通过对矿井地质、水文地质条件进行分析，确定主要充水水源和充水通道，并对2号煤层水进行涌水量预测，结合矿井不同阶段的水害隐患，提出相应的防治措施。结果表明:矿井采掘2号煤层时，2号煤层水、其顶板侏罗系延安组第四段和直罗组砂岩含水层水为矿井主要充水水源，覆岩导水裂隙带为主要充水通道。通过涌水量预测，分析确定采用水平廊道法预测的2号煤层水涌水量为防治水工作依据。结合现场实际，提出采用地面、井下等不同地段进行探查，物探、钻探等方法共同使用的综合方法，对后期矿井采掘过程中的顶板水、煤层水、采空区水、离层水等水害，提出相应的防治措施和方案。

Research on prevention and control technology of water hazards in different stages of Balasu Coal Mine

There are abundant coal resources and serious water damage problems in the western region of my country.In order to effectively prevent and control the water hazards faced by the mine at different stages of construction and production，taking the Balasu Coal Mine in the Yuhengbei district of the Jurassic coalfield as an example，the main water-filled water sources were determined by analyzing the mine geological and hydrogeological conditions and the water-filled channel，and predict the amount of water influx of No.2 coal seam，combined with the hidden dangers of water hazards in different stages of the mine，and put forward corresponding prevention measures.The results showed that when the No.2 coal seam was excavated in the mine，the No.2 coal seam water，the roof water of the fourth section of the Jurassic Yan′an Formation and the sandstone aquifer of the Zhiluo Formation were the main water-filled water sources in the mine，and the overlying water-conducting fissure zone was the main water-filled water.Through the prediction of water influx，the analysis determined that the water inrush of No.2 coal seam predicted by the horizontal corridor method was the basis for water prevention and control.Combined with the actual situation on site，it proposed a comprehensive method using ground，underground and other different areas for exploration，physical exploration，drilling and other methods.Regarding the roof water，coal bed water，goaf water，delamination water and other water hazards during the mining process in the later period，corresponding prevention measures and plans were proposed.