榆神矿区煤炭开采对地下水资源的影响

Impact of coal mining on groundwater resources in Yushen mining area

榆神矿区地处陕北黄土高原与毛乌素沙地接壤地带,生态环境脆弱,煤炭资源大规模开发将加速区域生态环境的恶化。在矿区大规模开采前,科学认识煤炭开采与水资源变化的关系,具有重要的理论价值和现实意义。本文对榆神矿区主要可采的2-2煤层开采后可能形成的导水裂隙带发育高度分别采用理论计算法、导水裂隙带发育高度的力学模型和基于岩层力学性质的煤炭开采数值模拟法3种方法进行了计算。对不同方法计算出的结果间的差异进行分析,得出结论。认为基于岩层力学性质的煤层开采数值模拟计算出的导水裂隙带发育高度相比其它几种方法更合理、更科学。

Yushen mining area is located in the bordering areas of northern Shaanxl loess plateau anct Mu Us Sandland. The fragile ecological environment need scientific coal mining. Calculate the height of water flowing fractured zone which may form during 2-2 coal seam development with theoretical calculation method, mechanical model analysis, numerical simulation method based on mechanical properties of stratum. Analyze the differences among the ＂results achieved by different methods. The results show that, the third method is the most reasonable and scientific.