摘要
以伊敏露天矿为研究背景,在其特有高含水含弱层边坡的条件下,开展了不同含水状态的岩土力学性质试验,并对水文地质资料进行调查分析,采用其分析结果对边坡进行极限平衡分析方法下的边坡稳定性验算,研究了水及弱层对边坡稳定性的影响规律。研究表明:遇水会使弱层的岩土强度指标显著弱化,其接近饱和状态下时边坡失稳可能性更大;地下水和弱层的关联作用严重降低了软岩边坡的稳定性,若降低地下水位至坡底以下,稳定系数可提高20.29%~39.88%。
Based on the background of Yimin Open-pit Mine,under the unique water-rich slope containing weak layers,we carry out different water-bearing conditions of rock and soil mechanical properties tests,investigate and analyze the hydrogeological data,and use the analysis results to check the slope stability under the limit equilibrium analysis method,and study the influence of water and weak layers on the slope stability.The results show that:encountering water will significantly weaken the rock and soil strength indicators of the weak layer,and the slope is more likely to lose stability when it is close to saturation.The correlation between groundwater and weak layers seriously reduces the stability of soft rock slopes.If the groundwater level is lowered below the slope bottom,the stability coefficient can be increased by 20.29%to 39.88%.
作者
马可
MA Ke(China Coal Technology and Engineering Group Shenyang Design&Research Institute,Shenyang 110015,China)
出处
《露天采矿技术》
CAS
2021年第4期18-21,共4页
Opencast Mining Technology
关键词
地下水
弱层
边坡稳定性
极限平衡法
软岩边坡
groundwater
weak layer
slope stability
limit equilibrium method
soft rock slope
