Study On Treatment Project And Antiskid Key Of Sanmashan Landslide

Sanmashan landslide locates at Sanmashan district of Fengjie new town that is in the upriver of Changjiang Sanxia dam, which influences the completion of the Fengjie new town construction. It is typical to Sanxia reservoir landslide for its origin reasons, deformation failure mechanism, and geometry boundary conditions. This paper according to characteristic of landslide nearby Changjiang River, with the stability analysis of different hydrogeological working conditions, the study discusses the potential instability of the landslide and the inherent formation factor of the landslide. The paper indicates the reasons for the landslide stability: too many buildings on it and a larger hydrodynamic pressure arose by the dropping of Changjiang water level. Otherwise, the paper is important to discuss that landslide will influence by the dropping of Changjiang water level.After the stability analysis of the landslide, combining with the unique location, put forward three primary treatment measures:â‘ many riprap in foot of landslide,â‘¡anchor cable pile, andâ‘¢antiskide key. Comparing with the view of economy, reasonable and safety, finally determine that antiskide key is primary for the treatment measure of landslide, the project is important to study on antiskid key. According to the residual thrust of landslide, the main anti-skid structure's size and the number of reinforcing steel bars are determined. Combine on this foundation, carry on analysis argument towards landslide an ascent to manage after the possible creation new breakage mode, the paper put forward managing to the new breakage mode assistance, and insure landslide ascent of whole safety.Finally the paper uses FLAC software to numerical simulates the effects of treating the landslide, compares with the effects of not treatment. The forces including the axial forces, shears, bending moments of the antiskid key are solved by simulation, and the results showed that the force of antiskid key is consistent with the design requirement, with the antiskid key can effectively enhance the stability of landslide.