Study on the Management of Landslides on Dam Embankments

Abstract

The stability of the slope body is controlled by more factors due to the large height of the slope. Therefore, the engineering reinforcement protection needs to take care of not only the overall and local stability of high slope, but also the stability of slope surface, slope and slope body, only in this way can the effective reinforcement protection of high slope be achieved. Since high slopes often have multi-layer outward potential slippery surface, it is generally advisable to implement the basic principle of “solid foot and strong waist” in the reinforcement and protection of high slopes from the aspects of engineering safety and economy, etc. In this paper, taking the excavation of the slopes on both sides of the shoulder of a reservoir as an example, the finite element strength reduction method is used to analyze the original slope collapse. The slope is mainly composed of fully and strongly weathered rocks, and the weakly weathered rocks are distributed in the lower part of the slope. According to the initial design plan, the deformation and instability of the excavated slope led to the sliding collapse of the front end of the slope. The slope ratio of the excavation at the foot of the slope was adjusted on the original basis, and anchor cables were used to reinforce the foot of the slope in layers, and the potential slippery surface of the slope may appear in multiple layers, and the potential slippery body of the high slope was divided into shallow, middle and deep potential slippery bodies for treatment. And in the project of layered support reinforcement, each layer coordinates with each other to ensure that the slopes of all levels in the high slope that may be controlled by potential slip in different depths are kept stable after reinforcement and treatment.