付村煤业9#煤层水害分析与防治技术

Analysis and Prevention Technology of Water Hazard in 9#Coal Seam of Fucun Coal Mine

根据矿井水文地质条件和实际情况,分析9#煤层上覆3#煤层采空区积水和K5、K6灰岩的含水层富水性,提出矿井安全开采的水害防治措施,并重点分析了顶板探放水技术,设计疏放水钻孔,在9#煤层工作面顺槽布置钻场,钻孔窜层通过K5、K6灰岩,终孔探至3#煤层采空区,探测并疏放含水层及空区积水,有效消除了9#煤层顶板含水层和上覆3#煤层采空区积水对矿井安全生产的水害威胁。

According to the hydrogeological conditions and actual situation of the mine,this paper analyzes the water accumulation in the goaf of the 3#coal seam overlying the 9#coal seam and the water abundance of the K5 and K6 limestone aquifers,proposes water hazard prevention measures for safe mining in the mine,and focuses on the analysis of roof water exploration and drainage technology.Water drainage drilling holes are designed,and a drilling field is arranged along the channel in the 9#coal seam working face.The borehole channeling layer passes through the K5 and K6 limestone,and the final hole is explored to the goaf of the 3#coal seam.The detection and drainage of aquifer and goaf water effectively eliminates the water hazard threat to the safety production of the mine caused by the aquifer on the roof of the 9#coal seam and the water accumulation in the overlying 3#coal seam goaf.