充水作用下露天煤矿内排土场边坡稳定性分析
Slope stability analysis of open-pit coal mine dump under water filling
王来贵 1纪宇轩 1赵娜1
作者信息
- 1. 辽宁工程技术大学 力学与工程学院,辽宁 阜新 123000
- 折叠
摘要
为分析废弃矿坑改造成蓄水湖时充水高度对内排土场边坡稳定性的影响,采用室内相似试验、数值模拟和理论分析的方法对不同水位高度下内排土场边坡稳定性进行研究.研究结果表明:随着充水高度的增加,浸润线运移速度、边坡最大位移、孔隙水压力和边坡土体受到的压力整体呈增长趋势.充水高度越大,边坡倾角越大,边坡稳定系数越低.研究结论为露天煤矿改造成蓄水湖或蓄能水电站项目工程提供参考.
Abstract
In order to analyze the influence of water filling height on the stability of the inner dump slope when the abandoned mine is transformed into a water storage lake,the stability of the inner dump slope under different water level heights was studied by means of indoor similarity test,numerical simulation and theoretical analysis.The results show that with the increase of water filling height,the migration velocity of saturation line,the maximum displacement of slope,the pore water pressure and the pressure of slope soil are increasing as a whole.The larger the water filling height,the larger the slope inclination angle,and the lower the slope stability coefficient.The research conclusions provide reference for the transformation of open-pit coal mine into water storage lake or energy storage hydropower station project.
关键词
边坡稳定性/条分法/浸润线/孔隙水压/内排土场/充水高度Key words
slope stability/slices method/infiltration line/pore water pressure/inner dump/water filling height引用本文复制引用
基金项目
国家自然科学基金项目(2017YFC1503102)
出版年
2024
国家科技期刊平台
NSTL
万方数据