Abstract:
After Wenehuan "5. 12" earthquake of Siehuan province, there are many secondary geological disasters such as tallings,slides and mudrock flows in denudation hill areas valley in low mountain slopes, there are many important projects, villages and densely populated areas. After earthquakes the stability of lase rock and soil mass is decrease sharply with the distroy of rain fall and external. Disaster proveting must aeorrding to the geological environment, deformation history, deformation characties of the status and evolution,give us a economic and scientific, reasonable ways to prevent disasters and decrease disaster and governance programs.