The rapid development of infrastructure construction in our country such as highway, railroad, water conservation, as well as mine all involves slope cutting, which cause landslide disaster more and more severe, and our country invests large amount fund every year on cutting down the loss which landslide creates. Since long ago, people have devoted to the research on landslide disaster monitor and forecast, and accumulated a lot of experience. At present, landslide researches focus on realizing r...