摘要
运河煤矿7308工作面邻近煤层露头区,为解决受第四系底砾-风氧化带含水层水害威胁问题,采用井上下联合钻探的方式对工作面附近区域含水层情况进行探查,查明开采区域附近第四系底砾-风氧化带含水层富水性及连通性。采用一孔多用的方式,通过探查钻孔进行靶向注浆加固、封堵,有效封堵了相邻采空区第四系底砾-风氧化带水补给水源,加固了煤层顶板,降低了工作面回采期间的水害威胁,解决研究区内松散含水层下采煤安全问题,实现了减水开采,降低了矿井涌水量,具有重要的经济效益和社会效益。
The 7308 working face of Yunhe Coal Mine is close to the coal seam outcrop area.In order to solve the problem of water hazard threatened by the aquifer in the Quaternary bottom gravel-wind oxidation zone,a well up and down joint drilling method is adopted to explore the aquifer situation of areas that near the working face.The water richness and connectivity of the aquifer in the Quaternary bottom gravel-wind oxidation zone near the mining area are identified.The multi-purpose method of one hole is adopted,and targeted grouting reinforcement and sealing are carried out through the exploration drilling hole.The water supply source of the Quaternary bottom gravel-wind oxidation zone in the adjacent goaf is effectively sealed,the coal seam roof is reinforced,the water hazard threat during the stoping period of the working face is reduced,and the safety problem of coal mining under loose aquifers in the study area is solved.Water reduction mining is achieved,and the mine water inflow is reduced,which has important economic benefits and social benefits.
作者
邓重青
李永雷
高玉超
Deng Chongqing;Li Yonglei;Gao Yuchao(College of Earth Science and Engineering,Shandong University of Science and Technology,Shandong Qingdao 266590;Jining Mining Industry Group Mineral Resources Exploration and Development Co.,Ltd.,Shandong Jining 272073)
出处
《山东煤炭科技》
2024年第9期152-157,163,共7页
Shandong Coal Science and Technology
关键词
薄基岩区
底砾-风氧化带水层
联合探查
注浆治理
thin bedrock area
bottom gravel-wind oxidation zone water layer
joint exploration
grouting governance
