【摘要】 巨野煤田某矿4301工作面埋深大于800 m,煤层厚度大,为了研究回采过程中水害影响,首先分析工作面顶板沉积组合结构,采用可控源音频大地电磁法勘探顶板含水层,然后用UDEC软件进行覆岩变形破坏数值模拟分析。得出工作面导水裂隙带最大发育高度约100 m,裂采比11.12,导水裂隙不会波及基岩顶部砂含5,经疏放水后可进行安全回采。更多还原

【Abstract】 The depth of 4301 working face of a mine in Juye coalfield is more than 800 m, and the thickness of coal seam is large. In order to study the influence of water damage in the mining process,the roof sedimentary assemblage of the working face is analyzed first, and the roof aquifer is explored by CSAMT method. Then carry out numerical simulation by using UDEC software to analysis of overlying strata deformation and failure. It is concluded that the maximum development height of water flowing fractured zone is about 100 m and the ratio of split to production is 11.12. The water flowing fractured will not affect the top sand aquifer 5 and can be safely mined after draining.更多还原