| Mountain geologic hazards frequently happened in the Yangtse River three gorges reservoir area. Based on prevention and treatment engineering of the Daheba in the Yangtse River three gorges reservoir area, systemic prevention and treatment engineering of land slide, which include its genesis, stability analyze, prevention and cure measure scheme, and project monitor, have been researched in this dissertation. Research findings can be used in similar landslide.After a series of analyse on Daheba landslide, main conclusions as follow are gained.1. There are four zones in slide mass with different deformation, deformation degree of these four zones are undeformation, light, weak and strong. Due to hazard zone with many migrations, disaster of Daheba landslide is serious, so, prevention and treatment to Daheba landslide is very urgent.2. Based on gensis analyse of landslide, human's engineering activity and water is main factor of landslide.3. By sensitivity analysis of influence parameters of stability coefficient, this result can be gained, which is internal friction angle is more sensitive than cohesion to stability coefficient of landslide.4. According as geologic examination, and feasibility and science and economy of scheme, this dissertation offers two schemes to resistance slide. First scheme is cantilever anti-slide pile with drain system; the other scheme is pre-stress anchor rope anti-slide pile with drain system. After comparing, first scheme is commended.5. Using FEM, effections of prevention and treatment of landslide have been evaluated. After landslide is prevention and treatmented, displacements and stresses of slide mass becomed well.6. To going on wheels, this dissertation brings forward project monitor scheme and construction design of Daheba landslide.
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