中文摘要：

开采扰动诱发断层活化是导致矿坑涌水量增加的重要影响因素。通过岩石全应力-应变、渗透试验,并建立矿区地质模型及数值计算模型,分析开采扰动对断层活化的影响范围及进行定量化研究。研究表明：峰后岩石渗透率约为峰前岩石的渗透率的2倍,峰后岩石裂纹的贯通导致渗透率发生本质变化;露天坑三维地质模型显示覆岩断层为主要导水通道,且受地下开采扰动的影响显著;露天坑右侧边坡的位移值是左侧边坡位移值的4倍,易发生断层岩移导致涌水量突增以及边坡滑动的风险;根据位移梯度变化开采扰动区域可分为岩体破裂冒落区,破裂过渡区、变形移动区、微变形区和未扰动区5个区域。研究结果有利于优化地面堵水注浆帷幕的布置。

英文摘要：

Fault activation induced by mining disturbance is the key factors for water inflow increase. Through the tests of complete stress-strain-seepage,the geological model and the numerical calculation models are established. The effect of mining disturbance on fault activation and the effect quantization are analyzed. The research results showed that the permeability of post-peak rocks is about 2 times of that of the pre-peak rock. The through permeability of post-peak rock crack has changed in nature. Geological model of open pit shows that faults at overburden rocks are the main water channel and significantly influenced by underground mining. The displacement value at the right side of the slope is four times of that at the left side,so it is easy to occur water inflow increase and landslide risk caused by the displacement of rock at faults. According to the displacement gradient change,the mining-disturbed area can be divided into five regions：rock falling zone,transition zone,deform-moving zone,micro-deforming zone and undisturbed zone. The research result is helpful to optimize the arrangement of ground grouting curtain.