上覆采空区积水影响分析及探放水技术

Analysis of Water Accumulation in Overlying Goaf and Water Exploration and Drainage Technology

为了防止豹子沟煤业下部9+10+11#煤层工作面开采过程中出现透水事故,保障工作面的安全开采,通过分析9+10+11#煤层与上部2#煤层之间的层位关系和10105工作面导水裂隙带高度,确定了10105工作面周边上覆2#煤的4处采空区积水对工作面开采的影响情况,从钻场布置、钻孔参数设计、封孔工艺等方面制定了10105工作面上覆采空区探放水技术方案,并进行了现场应用。

In order to prevent the leakage accident in the process of mining the lower No.9+10+11 coal seam in Baozigou Coal Industry and to ensure the safe mining of the working face,the influence of water accumulation in four goafs surrounding No.2 coal seam on the mining face is determined by analyzing the relationship between No.9+10+11 coal seam and the upper No.2 coal seam as well as the height of the water-conducting fracture zone in the 10105 coal face.From the aspects of drilling field layout,drilling parameter design and hole sealing technology,the technical scheme of water exploration and drainage in the overlying goaf of working face 10105 is formulated and applied in the field.