【摘要】 基于淮北某煤矿注水井中测流、钻孔电视成像的勘查和测试成果,总结了顶板厚层砂岩中离层水体的分布规律及水文地质特征,并对离层水体突水危险性进行了分析预测.为确保后续工作面的安全生产,采用向工作面外施工疏水孔的探放水方案,使得疏放水孔能超前、全过程的疏放砂岩水,达到切断离层积水水源的目的,从而阻截顶板离层水体的形成.经放水试验和工作面回采验证,表明疏放水效果显著,达到预期目标.更多还原

【Abstract】 Based on results of flow measurement and TV imaging of borehole in water injection well of a certain coal mine in Huaibei,we summarized the distribution rule,analyzed the hydrogeological characteristics,and predicted the water inrush risk of bed separation.In order to ensure safety production of the subsequent working face,boreholes from the working face were drilled to drainage water from sandstone in advance so as to prevent water accumulated in the separated beds of roof.The drainage experiment and practical mining in working face shows that the effect of water drainage is significant and reaches our expected goal.更多还原