三峡库区土门子滑坡成因机制分析与稳定性评价  

Cause Analysis and Stability Evaluation on Tumenzi Landslide in the Three Gorges Reservoir Area

作　　者：王泉伟[1] 刘建磊[1] 习晓红[1] 

机构地区：[1]黄河勘测规划设计有限公司,河南郑州450003

出　　处：《华北水利水电学院学报》2011年第4期105-108,共4页North China Institute of Water Conservancy and Hydroelectric Power

摘　　要：三峡库区土门子滑坡自1992年以来滑坡体蠕动变形持续发展,近期变形进一步加剧造成滑体内公路及房屋破坏.在分析滑坡地质环境和变形特征的基础上,对滑坡的成因机制进行了深入研究,并对滑坡体的稳定性进行评价.结果表明,滑坡体处于整体蠕动变形局部滑移,持续强降雨是诱发其失稳破坏的主导因素,在暴雨工况下,滑坡体处于欠稳定-基本稳定极限状态,可能沿多个剪出口发生失稳破坏.Since 1992, the slope creep deformation of Tumenzi landslide, located in Jiangjin region of Chongqing city, has still been developed. Its resent deformation further aggravates the roads and houses nearby destroyed. Based on the analysis of geological environment and deformation characteristics of the landslide, the deformation mechanism of the landslide is further studied, and the stability of the landslide is evaluated. The results show that the landslide is in the stage of wholly creep deformation with partly sliding, and the continuous heavy rainfall is the dominant factor resulting in its unstable failure. In heavy rain conditions, the landslide lies in the unstable-stable limit state, this may cause the entire collapse along several shear opening.

关 键 词：三峡库区 土门子滑坡 成因机制 稳定性 剪出口 

分 类 号：P642.22[天文地球—工程地质学]