PROCESS OF BREAKAGE AND DEDUCTION OF THE KANGJIAZUI LANDSLIDE IN THE THREE GORGES RESERVOIR REGION

The landslide, which is one of typical geological disasters, triggered by various factors. The Kangjiazui Landslide in the Three Gorges reservoir area formed in front of the alluvial fan in the old landslide debris flow and for the new sliding deformation. It has a Quaternary soil layer on the surface of the landslide mass. The sliding zone is celadon silty clay or clay. They had creep deformation after becoming saturation under the periodical soak of rainfall and the Three Gorges reservoir area sluice. The landslide was in the state of destabilization to limit stabilization and desiderated to prevent and cure. This paper gives a detailed description of the breakage process, appearances and the deduction process to take back into trace. The investigation clearly showed the landslide geological condition and the developing trend. It was analyzed the economy and advanced different deformation stages with targeted prevention programs. The preventive measures uses slide-resistant piles, drain ditch, and backfilling consolidation in partial of new landslide mass (strong deformation zone) and in the back of the landslide mass. The measures were slide-resistant piles and drain ditch. The calculation showed that it was in stable state. It also has some references to deal with some similar geological disasters.