清江隔河岩库区天池口滑坡变形机制及稳定性分析

天池口滑坡是清江隔河岩库区一大型松散堆积物滑坡。自1993年4月隔河岩水库蓄水以来，滑坡体开始发生变形，特别是库岸滑体前缘变形日趋明显。根据野外现场调研和室内试验、工程勘察资料，探讨了天池口滑坡的变形机制，并运用极限平衡理论分析了滑坡在蓄水和降水时的稳定性。研究结果表明，天池口滑坡基本上属二元结构，滑坡体的变形是由于水库蓄水和库水位骤涨骤降引起的，在目前正常蓄水条件下，滑坡体基本处于稳定状态。

The Analysis of Deformation Mechanism and Its Stability of Tianchikou Landslide in Geheyan Reservoir on Qing River

Tianchikou landslide is a large unconsolidated deposit landslide in Geheyan reservoir area on Qing River.After the reservoir was impounded in April,1993,the landslide occurred to deform,especially the frontier edge of the landslide tended to be obvious.According to engineering exploration and lab tests data and field investigation,the deformation mechanism of the landslide has been discussed.The landslide stability has also been calculated and analyzed under the conditions of impounding and precipitation by means of limited equilibrium theory.The research shows that the landslide belongs to two layer structure. The deformation of the landslide results from reservoir impounding and sudden rise-fall of water level.The landslide is basically steady under the condition of normal impounding at present.