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通过分析杉木树煤矿的水文地质条件,应用物理相似和数值模拟实验方法,模拟开采引起覆岩冒裂带发育高度、范围和地表裂缝情况;结合F-RFPA2D数值试验模拟固液耦合条件下开采引起覆岩导水裂缝带的高度及其发展形态和渗流过程。实验结果显示,采高2 m时导水裂隙带高度为70 m对采区覆岩和河床破坏较小,可以实现石炭沟河下安全采煤。
By analyzing the hydrogeological conditions of the Fushulin Shushan coalmine and applying physical similarity and numerical simulation experimental methods, the development height, range and surface cracks of the overlying strata induced by mining are simulated. The F-RFPA2D numerical simulation is used to simulate the exploitation under solid-liquid coupling conditions The height of overlying rock aqueduct and its development pattern and seepage process. The experimental results show that the height of the water-carrying fractured zone at the height of 2 m is less than 70 m, which has less damage to the overlying strata and riverbed in the mining area, and safe coal mining under the Carboniferous Gully can be realized.