白象山铁矿富水巷道遇断层防水岩柱留设研究

Analysis of Rationally Setting Water-proof Pillar for Fault of Water-rich Laneway in Baixiangshan Iron Mine

基于多孔介质流固耦合理论及弹塑性极限平衡理论,以白象山铁矿-390-1#穿脉与导水断层交汇处为工程背景,建立穿脉巷道遇大倾角导水断层数值模型,研究在不同侧压力系数条件下防水岩柱的留设宽度,探讨和研究在巷道开挖扰动下围岩系统的应力及应变场变化规律以及对巷道围岩稳定性和突水风险性的影响规律。

Based on porous media fluid-solid coupling theory and elastic-plastic limited equilibrium theory, taken No. - 390-1 transverse drift of Baixiangshan iron mine through water conductive fault as an engineering example, numerical model of ort roadway meet large inclined angle water conductive fault was set up, research was done on setting width of water-proof pillar under condition of different lateral pressure coefficient, change rule of stress and strain field of surrounding rock mass under the working disturbance of roadway and the influence rule to stability of roadway surrounding rock mass and water inrush risk were discussed and researched.