二塘沟水库右岸滑坡体稳定性分析

Stability analysis of the right bank landslide of the Ertang Valley Reservoir

本文在研究二塘沟水库枢纽工程的地质环境条件、水库右岸滑坡形成的地质环境、变形破坏特征和滑坡稳定性影响因素的基础上,对二塘沟水库右岸边坡进行稳定性分析,计算结果表明右岸滑坡体只在重力作用下处于临界稳定状态,不满足工程长期运行安全要求,但在滑坡体采取削坡改造和锚固处理措施后边坡的稳定系数明显提高。

By examining the Ertang Valley Reservoir engineering geological conditions,reservoir bank landslide geological environment,deformation characteristics and influencing factors of landslide stability are discussed on the basis of the reservoir right bank slope stability analysis.The calculation results show that the landslide at the right side body only under the action of gravity in the critical stable state does not meet the safety requirements of long-term projects.But in the cutting slope landslide,taking the measurements of transformation and anchorage may improve significantly the safety factor of the slope.The computation results show that the calculated results with the Fellenius method and GEO-SLOP software are close to each other and the most dangerous slip surface position of coincide,which reflects the geological parameters and coefficient of safety and reliability,can be applied to engineering safety design.