镇江市跑马山古（老）滑坡再滑动机制分析

In recent years, with an increasing number of the extremely heavy rainfall in the lower reaches of the Yangtze River, more and more creep landslide of gentle slope topography appeared. This paper takes the landslide for Paoma Mountain in Zhenjiang city, for example. The new tectonic movement background of the region is analyzed emphatically. Based on the engineering geological characteristics, landform, formation lithology, and automatic deformation monitoring, we analyzed the deformation state and genetic mechanism of the landslide. As a result, it is considered that the reactivation of the ancient(old) landslideis the key of the landslide.And the ancient(old) landslide mass is the geomorphological foundation, the loose soil of the slip zone(or weak structural plane) provides space for groundwater penetration and groundwater storage,the "temporary confined water" formed by heavy rainfall and the unreasonable manmade projects is the predisposing factor.