地面定向钻孔超前区域治理底板岩溶水害技术应用

为了进一步提高矿井岩溶水害治理技术的可靠性,降低工作面水害威胁,解决矿井面临的太原组上段灰岩岩溶裂隙发育、 水压高、 富水性强、 井下钻孔施工工程量大、 施工工期长等安全技术问题,陈四楼矿在南翼2506工作面(里段)实施了底板水害地面区域治理工程,选取L8灰岩含水层作为目标层位,施工1个主孔,13个分支孔,累计钻探进尺...

Application of surface regional treatment engineering in complex hydrogeology research and application of working face

With the increase of mining depth in Chensilou Coal Mine, the limestone water pressure and the probability of water inrush increase. After water inrush, the cost of drainage increases with the increase of mining depth. Water inrush from floor not only threatens mine safety, but also greatly reduces mine economic benefits. In particular, the limestone karst fissures in the upper section of Taiyuan Formation in the mining area of the south wing of the mine are developed, which have the characteristics of high water pressure, strong water yield and rich water supply, which pose a serious threat to the safety production of the mining face. In order to solve the problem of limestone water disaster prevention and control during the mining of coal seam in the deep mining area of the south wing of Chensilou Coal Mine, the 2506 working face (inner section) of the south wing of the mine took the lead in implementing the ground area treatment project of floor water disaster. Through the construction of ground boreholes, regional advance bedding exploration of limestone karst fissures, water diversion channels and water storage spaces, and high-pressure grouting plugging, The transformation of the aquifer into an equivalent aquifer has liberated the coal resources threatened by the high-pressure and strong aquifer. At present, the working face has been safely mined. The research results provide a reference example for Yongxia mining area and similar mines harmed by high confined water in the floor in China.