九甸峡燕子坪滑坡特征及形成机理研究

A Study on the Features of Yanziping Landslide and Its Mechanism of Formation at Jiudian Canyon of Gansu, China

本文论述了燕子坪滑坡形成的工程地质背景和形态、结构等特征。研究表明，该滑坡从孕育到发生是一个长期的渐近性破坏过程，在这个过程中，构造应力是主导因素，地下水和坡体内裂隙则加速了破坏过程．而滑坡的不稳定性，将严重影响九甸峡水库建设．

The features of engineering and geological background, shape, and structure of Yanziping Landslide formation are discussed in this paper. The detailed studies show that this Landslide, from its formation to the occurrence, underwent a long-term but gradual process of destruction, in which the tectonic stress played the dominant role; the groundwater and the old fissures on the sliding mass speeded up the destroying process. And the unstability of the landslide will seriously affect the construction of Jiudian Canyon Reservoir.