导水裂隙带影响下的煤层稳定性及安全开采措施研究

Study on Safe Mining Measures under the Influence of Water Flowing Fractured Zone

以大同煤业集团下属塔山煤矿实际水文地质资料为基础,采用理论计算、经验公式确定了不同煤层开采条件下顶底板导水裂隙带发育高度,确定导水裂缝带最大高度取64 m。随着矿井水含量的增加,高压区和弹性能量积聚范围向远离煤壁方向转移;同时,采空区直接顶塑形破坏区域逐渐扩大。

Based on the actual hydrogeological data of the Tashan Coal Mine subordinate to the Datong Coal Mining Group,the development height of the water guide fissure zone in the roof and floor under different coal seam mining conditions is determined by theoretical calculation and empirical formula,and the maximum height of the water guide fracture zone is determined to take 64 m.With the increase of mine water content,the accumulating range of high pressure and elastic energy shifts to the direction of the coal wall,while the direct top plastic failure area of the goaf is gradually expanded.