水库边坡及下伏深部空区稳定性研究  

Stability of reservoir slope and underlying deep goaf

作　　者：廖声银[1] 王晓军[1] 邓飞[1] 韩晓亮[1] 

机构地区：[1]江西理工大学资源与环境工程学院,江西赣州341000

出　　处：《有色金属科学与工程》2016年第1期74-79,共6页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金资助项目(51364011);江西省科技支撑计划项目(20141BBE50005)

摘　　要：水的渗流与静水压力对水库周围边坡及下伏采空区稳定性都有重要的影响.为了解水库蓄水后水的渗流对边坡稳定性与水压对深部回采稳定性影响,保证其下伏采场的安全性,根据实际地形地貌条件建立数值模型,模拟整个库区地表在蓄水前、蓄水后深部回采对周围岩土体边坡与采空区顶板围岩力学性质和位移变化,分析水库蓄水对边坡与采空区的稳定性.结果表明:水库蓄水后采空区顶板围岩位移不明显,局部产生应力集中,未超过岩体最大承载,在安全系数限定内;水的渗流对库区边坡稳定性影响较小,水库边坡较为稳定.The Water seepage and hydrostatic pressure have major impact on the slope around the reservoir and the stability of the mined area. To understand the effects of reservoir permeability after impounding water on slope stability and stability of hydraulic mining of the deep, and guarantee the security of underlying stope, the numerical model based on the actual terrain conditions was established. The mechanical properties and displacement changes of deep mining on the surrounding rock mass slope and gob roof before and after water storage was simulated around the entire reservoir surface. Then the stability of reservoir storage on the slope and mined-out area was analysis. The results show that the displacement of surrounding rock on the goaf roof is not obvious after impoundment, and the local area produces stress concentration but does not exceed the maximum load of rock which is in the factor of safety limit; the stability of reservoir slope is less affected by the water seepage and the reservoirs slope is more stable than the other place.

关 键 词：水库 深部回采 稳定性 渗透性 数值模拟 

分 类 号：TD325.4[矿业工程—矿井建设]