重庆市涪陵区植物油厂滑坡成因机制分析与稳定性评价

通过实地野外调研,在详细研究重庆市涪陵区植物油厂滑坡的区域环境和地质条件,结合滑坡特征的基础上,对植物油厂滑坡成因机制进行了研究得出如下结论:滑坡区上方修建319国道引起阁系水流量增大致使原河谷下切和排洪暗涵修建后的不完全回填这两个人为工程活动使滑坡前缘临空面增大是滑坡产生的决定性因素;夏季长期大量的降雨是主要的诱发因素。根据地形地貌和地质岩性条件,采用数值模拟和刚体极限平衡计算相结合的方法对滑坡变形特征和滑坡稳定性进行了验证。最后,根据成因机制和影响因素,对研究区内的滑坡治理方案进行了初步探讨。

FORMATION MECHANISM AND STABILITY OF LANDSLIDE AT VEGETABLE OIL FACTORY, CHONGQING

Through on-site field investigation, a detailed study of the site environment and geological conditions are carried out at the landslide at the vegetable oil factory in Fuling District of Chongqing. According to the landslide feature and influential factors, three conclusions are reached as follow: the building of the State Road No. 319 above the landslide area caused the increased water flow and incomplete backfilling of the drainage channel. These two human activities are the crucial factors causing the landslide; the long-term rainfall is the controlling factor. FEM and limit equilibrium method were used to evaluate the stability of the slide. According to assessment results and influential factors, this paper discussed the treatment methods of the landslide.