关键词: 滑坡, 宏观地学背景, 三峡库区

Abstract: Landslide disasters at Three Gorges Reservoir area and nearby are constrained by the geological structure, geomorphologie units, lithology, precipitation and other factors. The eonstruetion-lithology-geomorphologie combination of conditions is in control of the formation and distribution of landslide geological disasters. Strong new teetonie movement controls the convergence of landslide distribution. The large-landslides mainly distribute near the geomorphologie ladder; tectonic stress field is closely related to the direction of landslides. Landscape of deep valleys and abundant rainfall is helpful to the landslide development; the development of landslide is essentially a kind of geomorphologie development, formation and change in the process. On this basis, taking Yangjiawuchang landslide as an example, the macro background of landslide development of Three Gorges Reservoir area and nearby is analyzed in order to have a new understanding and further research on the landslide development in this area.

Key words: landslide , macro geography background , Three Gorges Reservoir area ;