蒙陕矿区深埋煤层首采工作面水文地质条件研究

Study on Hydrogeological Conditions of First Mining Face in Deep Buried Coal Seam in Inner Mongolia and Shannxi Contiguous Area

为了弄清蒙陕矿区深埋煤层首采工作面回采过程中防治水目的层,通过地层揭露、抽水试验、涌水量计算等手段,开展了3-1煤层顶板水文地质条件研究。结果表明:首采工作面3-1煤顶板导水裂缝带范围内,主要发育延安组三段和直罗组一段含水层,是3-1煤开采的主要防治水目的层;主要充水含水层补给较弱,易于疏降。

In order to make clear the key aquifers of water control in the first mining face, used some technical means to research the hydrogeological conditions of the 3-1 coal seam roof in Inner Mongolia and Shaanxi contiguous area. The results showed that the third member of Yan＇ an formation and the first member of Zhiluo formation were within range of 3-1 coal water flowing fractured zone,which is primary water control stratum. The groundwater of the two aquifers was poor recharged and could be drainaged easily.