含水松散层下煤层开采覆岩破坏规律的数值模拟研究

以五沟煤矿1011工作面煤层开采为例,应用ANSYS有限元软件,对煤矿开采引起的煤层顶板覆岩运移规律进行了数值模拟,分析研究了含水松散层下煤层开采覆岩破坏移动规律,确定了导水裂隙带和覆岩冒落带发育高度,利用经验公式和简易水文观测法对模拟计算结果进行了验证,得出了1011工作面覆岩破坏移动规律和"两带"发育高度,为进一步合理留设防水煤柱提供了有效的技术参数。

Numerical simulation study on the damage rule of overlying strata in mining under water bearing soft strata

Taking the typical coal such as mining in 1011 face of Wugou mine,numerically simulating the movement rule of overlying strata of roof caused by mining by using ANSYS software,analyzing the damage movement rule of overlying strata in mining under water bearing soft strata,confirming the height of the water flowing fractured zone and the overlying strata caving zone,testing the simulation result by the empirical formula and simple hydrology observation result,obtaining the damage movement rule of overlying strata and the height of "Two zone"in 1011 face,further providing the effective technical parameters for reasonably retaining waterproof pillar.