Numerical simulation on anti-slide construction effects of landslide in three gorges reservoir area

At present, the anti-slide construction effects are one of the important subjects to be studied urgently. Taking the typical landslide in the Three Gorges Reservoir Area as an example, the stresses, strains and displacement fields under natural condition and considering anti-slide piles are separately simulated with numerical simulation method. The different cases: (1)Gravity under the most dangerous water level change case (that is water level change from 175 in to 145 in); (2)Gravity + rainstorm under the most dangerous water level change case are separately simulated under natural condition and considering anti-slide piles. The results show that: (1) the landslide stability is getting worse along with the water level change from 175 in to 145 in, and the rainstorm make the landslide stability further get worse; (2) The displacement of the landslide decreases, and plastic strain area decreases as well under considering anti-slide piles, indicating that the anti-slide piles effects are obvious under different cases. It also shows that the anti-slide pile design is rational, and it is suitable to study the anti-slide plies effects with the numerical simulation method.