Zonation of the landslide hazards in the forereservoir region of the Three Gorges Project on the Yangtze River

Abstract

On the basis of the investigation and statistic analysis of the landslide hazards in the forereservoir region of the Three Gorges Project on the Yangtze River, the major factors that are found to have affected the slope stabilities are outlined, and a zonation of landslide hazards of the region is made using an integrated information model. It is divided into destructive, disastrous, slightly disastrous, likely disastrous and essentially non-disastrous areas. The first two cover an area of less than 5% of the total region, and are at a distance of more than 20km from the Three Gorges dam, and so a landslide over there will impose no direct impact to the TGP, but may effect to some degree the navigation of the Yangtze River and nearby highway transportation, reservoir slopes, and building of cities and towns.