Stability analysis of accumulation body based on monitoring results of deep displacement

Stability analysis of accumulation body based on monitoring results of deep displacement

Jianhui Dong Mo Xu* Shiming Wan Feihong Xie Qihong Wu 

School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China

State Key Laboratory of Geohazard Prevention and Geoenvironment Protection,Chengdu University of Technology, Chengdu 610059, China

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The stability of accumulation body commonly adopts a qualitative and quantitative analysis method, which considers the geological boundary conditions, calculation model and mechanical parameters of rock mass and so on This causes the stability results be limited, so it is unlikely to make a real-time quantitative evaluation on the accumulation body. This paper proposes a method which avoids these problems, and timely evaluates the accumulation stability based on the monitoring results in the process of the deformation development. It involves two parameters, i.e. the integrity index S(i) and the destructive index S(d), used to evaluate quantitatively the dynamic change of accumulation body when the progressive destroy occurs from the bottom up. Take talus in front of the dam of Zippingpu hydraulic project as an example, this method not only measures the S(i) and S(d) during movements of its reservoir water level, but also evaluates the impact of Wenchuan earthquake on the accumulation body. it is proved by an example that this method is convenient, practical and feasible.


talus, stability, real-time quantitative assessment, deformation of landslide in depth, monitoring

1. Introduction
2. Generalization of monitoring results of deep displacement
3. Analysis principle of Si (Sd) index
4. Engineering case
5. Conclusion

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