某水库左坝肩滑坡体稳定性研究  

Stability Evaluations of the Slope at the Left Abutment of a Reservoir

作　　者：吴祖国[1] 阴国胜[1] 王耀邦[1] 

机构地区：[1]黄河勘测规划设计有限公司,郑州450003

出　　处：《土工基础》2013年第5期23-26,共4页Soil Engineering and Foundation

摘　　要：结合某水库左坝肩边坡工程,通过地质资料的整理分析、稳定性分析计算及三维监测,研究滑坡体的稳定性和对周围建筑物的影响程度。结果表明:该滑坡现状处于临界稳定状态,遇暴雨或地震工况存在失稳的可能,需对滑坡体采取相应的工程处理措施,滑坡体对周围建筑物安全影响较小,后坡山体稳定。The stability of the slope at the left abutment of abutment of a reservoir is evaluated in this paper. The overburden soil layer is above elevation of 1548.0 meters. The bedrock daylights the abutment slope. During the construction, tensile open cracks were observed at the rear of the slope. It is also observed that shear cracks distributed along the front toe of the slope. It is concluded that this soil movement was triggered by the vibrations from the compaction roller and other construction equipment. The original soil structures were destructed by the excessive vibrations. The lapse of the slope supporting measures could not eliminate the gradual deformation of the slope. The tensile cracks at the crown of the slope are widened and result in a landslide. The slide body was three dimensional monitored and evaluated by using the site specific geotechnical parameters. The impact of this slide on the adjacent buildings is also evaluated in this paper. The results indicate that, the slide body is marginally stable and the slope failure is likely under the heavy rain condition. The engineering mitigation is needed on the slide body. Due to the small scale of the slide body, the impact on the adjacent buildings is negligible and the slopes behind the slide body are stable.

关 键 词：滑坡体 变形监测 土质边坡 形成机制 稳定性分析 

分 类 号：P642[天文地球—工程地质学]