论文部分内容阅读
针对凉水井滑坡两个不同的地质模型(地质模型一及地质模型二)进行了对比研究,认为地质模型二较为合理,即凉水井滑坡是顺层岩质古崩滑堆积体,目前还未形成统一连续的滑带,滑坡按不同的堆积形成秩序及稳定性相关关系分为主滑坡和后部牵引区。并对滑坡的影响因素及变形机制进行了简要分析,认为启动滑坡变形裂缝的根本原因是水库初期蓄水时库水对滑坡阻滑段的浮托、阻滑段滑带的软化和滑坡前缘表部松散坡体的侵蚀塌岸;而在水库运行条件下,滑坡的稳定性影响因素主要是降雨特别是暴雨和久雨。滑坡稳定性分析表明,滑坡自2009年5月以来一直处于缓慢的应力调整和应力释放过程中,滑坡变形总体处于蠕变状态。此外,还对滑坡的破坏模式及稳定性进行了预测分析,认为在未来特大暴雨久雨条件和库岸再造的共同作用下,滑坡表部岩土体将首先发生滑塌(模式一),也有发生滑坡整体深层滑动破坏的可能(模式二)。
Two different geological models (geological model one and geological model two) of Liangshuijing landslide are contrasted with each other, and it is considered that the geological model two is reasonable, that is, the Liangshuijing landslide is an ancient rock collapse accumulation body and has not yet formed Unified continuous slide, landslide according to the formation of different order and stability of the relationship between the accumulation of the main landslide and rear traction zone. And the influencing factors and deformation mechanism of the landslide are briefly analyzed. It is considered that the root cause of the landslide deformation cracking is the reservoir water softening of the landslide, the softening of the sliding zone and the front of the landslide The erosion of the loose slope of the surface part collapses. In the condition of reservoir operation, the main factors affecting the stability of landslide are rainfall, especially heavy rain and long rain. Landslide stability analysis shows that the landslide has been undergoing slow stress adjustment and stress release since May 2009, and the landslide deformation is generally creep. In addition, the failure mode and the stability of the landslide are also predicted and analyzed. It is considered that the landslide in the landslide will be the first to collapse (Mode 1) under the joint action of heavy rain and heavy rainfall in the future, and also The whole landslide sliding damage may occur (mode II).