The distribution law of slump-mass in Yingxiu—Beichuan fault zone

5.12 Wenchuan earthquake induced large scale secondary geological disaster.The paper summarizes and analyzes the distribution law of the slump-mass in Yingxiu—Beichuan fault zone.In order to analyze the law of the slump-mass,we divided the fault into three groups according to the scale of the earthquake and the slump-mass and the terrain.Near the center of the earthquake,the slump-mass is related to the power of the earthquake.However,far from the earthquake,the slump-mass is related to the character of the rocks and the terrain.From the law we will prevent the slump-mass from threating people further and give recommendations for the project of reconstruction.