RESEARCH ON WANGJIAWUCHANG LANDSLIDE IN THE NEWLY BUILT WUSHAN COUNTY,THE THREE-GORGES RESERVOIR REGION

The resettlement project is the key part of the Three Gorges Project on the Yangtze River.The geology of the new Wushan County site is the focus of current public concern a problem common in the Three-gorges Reservoir region.The geomorphology and structure of the slide mass is analysed in detail.The results reveal that the landslide has gone through two stages of development;in the earlier stage there having been repeated small slides, while in the later stage, restructuring of the slidemass becoming dominant. Karstification was well developed especially where the rocks were structurally fragmented, leading to undermining the mass from depth.Although the slidemass now remains relatively stable, precautions should be taken to prevent the mass from saturation.