三峡库区土门子滑坡成因机制分析与稳定性评价

土门子滑坡位于重庆市江津区,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。在研究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进一步深入研究,并对滑坡体的稳定性进行分析评价。结论表明,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。

ANALYSIS OF THE GENETIC MECHANISM AND EVOLUTION OF THE STABILITY OF THE TUMENZI LANDSLIDE IN THE THREE GORGES RESERVOIR AREA

Tumenzi landslide, located in Jiangjin region of Chongqing city, the creep deformation last ever since 1992, the resent accelerating deformation results in the broken of the road and houses in the sliding mass. Studied on the basement of the characteristics of the geology and deformation of the landslide, then did further research on the deformation mechanism and analyzed the stability of the slope. The research result shows that the landslide is in the stage of wholly creep deformation with partly sliding, the continually heavy rain is the main factor which may results in its broken, now it is in the limit state between unstable and stable, which may collapses entirely along several shear opening.