长距离定向钻探技术在采空区积水探放中的应用

Application of Long-distance Directional Drilling Technology in Exploring Water in Goaf

以晋圣坡底煤业3106工作面、3107工作面为例,对掘进煤层顶底板特征及含水层富水性展开探查,并应用长距离定向钻探技术对采空区积水情况进行了超前探查,对积水区展开分析,结合钻孔涌水量衰减趋势进行了采空区顶板含水层水力联系的构建与分析。结果表明,长距离定向钻探技术能更为精准地锁定巷道顶板含水层异常富水区、巷道前方的采空积水区,并能准确得出含水层域采空区的水力联系特征,还能有效阻截含水层内地下水持续向巷道渗流的过程,取得了显著的水害防治效果。

Taking 3106 working face and 3107 working face of Jinsheng Podi Coal Industry Co., Ltd. as examples, the characteristics of the roof and floor of the tunnelling coal seam and the water abundance of the aquifer were investigated, and the water accumulation in the goaf was investigated in advance using the long-distance directional drilling technology. The water accumulation area was analyzed, and the hydraulic connection of the roof aquifer in the goaf was constructed and analyzed in combination with the decline trend of the water inflow of the borehole. The results show that the long-distance directional drilling technology can more accurately lock the abnormal water rich area of the aquifer on the roof of the roadway and the goaf ponding area in front of the roadway, accurately obtain the hydraulic connection characteristics of the goaf in the aquifer area, and effectively block the continuous seepage process of groundwater from the aquifer to the roadway, achieving significant water hazard prevention and control effects.