古交矿区中奥陶统断层突水机理研究

Study on Water-inrush Mechanism of the Middle Ordovician Fault in Gujiao Mining Area

采用MTS电液伺服岩石力学实验系统,利用特制的渗流实验装置,对断裂构造岩的样品,模拟不同应力场条件,测试样品的渗流速度,计算样品的渗透系数,得到不同矿山压力下,断层带的导水能力大小。在古交矿区的地层岩石组合条件下,断层带处在中奥陶统顶板附近的破碎岩石,其导水性较差,断层导通中奥陶统地下水可能性较小。

For fracture rock samples, adopts MTS electro - hydraulic servo of rock mechanics experimental sys- tem, with the special seepage experiment device, this article simulated different stress field conditions, tested seepage velocity of samples and calculated their permeability coefficient to get conduct ability of faults under different mining pressure, under rock combination conditions in Gujiao mining area, broken rock in fault zone which near the roof of middle Ordovieian, had poor hydraulic conductivity, so the possibility that fault connected groundwater of middle Or- dovician was less likely.