地下水在黄腊石边坡稳定性中的作用规律与评价

Action law of groundwater and evaluation of Huanglashi slope stability

本文在对长江三峡区黄腊石边坡地下水位的实际监测资料及边坡工程地质条件系统分析的基础上,运用岩土塑性力学基本原理建立了充水条件下堆积层边坡坡体临界塑性区滑移深度数学评价模型,并运用该评价模型对部分充水条件下黄腊石边坡的临界滑移塑性区深度进行了计算与评价。并以此评价结果为基础,运用剩余下滑推力法确定了该边坡稳定性的时空动态变化规律,发现了地下水及其变化已成为影响和控制黄腊石石榴树包边坡整体稳定性最为敏感的关键因素,为该边坡稳定性趋势预测与防治提供了依据。

Based on systematic analysis of the data compiled from the monitoring of the underground-water table and engineering geological conditions of Huanglashi slope in the area of the Yangtze River Gorges. This paper establishes the critical plastic sliding depth mathematics evaluation model of colluvial landslide filled with water by means of the principle of plastic mechanics of rock and soil. Then the critical sliding plastic depth of Huanglashi slope filled with water is calculated and evaluated in terms of the model. Finally, on the basis of the results above, the dynamic variation law of space-time is determined by means of sliding thrust method of slice. Meanwhile, it is also found that the underground-water and its variation have become the most sensitive key factors that affect and control the overall stability of Huanglashi slope. All these results have supplied a basis for the stability prediction and prevention measures of this slope.