Analysis of Dynamic Response of Landslide Stability to Reservoir Water Level Fluctuation Using Numerical Simulation

Abstract:

Reservoir water level is one important factor influencing the stability of landslides. The dynamic response of landslide stability under reservoir water level function and its features are analyzed using theoretical and numerical methods. The results show that, in terms of reservoir water level fluctuation and landslide permeability, the seepage filed of landslide can be divided into four types: lag behind impoundment(X-Ⅰ), lag behind drawdown(T-Ⅰ), synchronization with impoundment(X-Ⅱ) and synchronization with drawdown (T-Ⅱ). Under lag behind drawdown, at a certain rate of reservoir drawdown, the stability drops with the permeability of landslide. Under lag behind impoundment, with the rise of water level, the lower the permeability of landslide is, the more stable the landslide is. Under synchronization with impoundment or drawdown, the stability of landslide drops with reservoir impoundment and rises with reservoir drawdown.

• Periodical: Advanced Materials Research (Volumes 594-597)
• Pages: 407-414
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.594-597.407
• Online since: November 2012
• Authors: Wu Yi, Zhao Ping Meng, Guo Qing Li, Zhi Wei Jin
• Keywords: Dynamic Response, Landslide Stability, Numerical Simulation, Reservoir Water Level Fluctuation, Seepage Modes

References

[1] A. J. Hendron und F. D. Patton: The Vaiont slide, a geotechnical analysis based on new geologic observations of the failure surface. Technical Report GL-85-5, U.S. Army Corps of Engineers, Washington D. C. (1985)

DOI: 10.1016/0013-7952(87)90080-9

[2] K.S. Lane: Proc. Vol.8 (1967), p.321.

[3] Guangzhong Sun: China's typical landslide(in Chinese)(Science press, Beijing 1988).

[4] Guangxi Zhong, Yuhua Wu, Liu Shikai: Yangtze River(in Chinese). Vol.10 (1992), p.31.

[5] Riemer W. Landslides and reservoirs(keynote paper)[A]. In ：Proceedings of the 6th International Symposium on Landslides[C]. Christchurch：[s. n.]，1992，p.1373.

[6] F.C. Dai, J.H. Deng, L.G. Tham, K.T. Law, and C.F. Lee: Can. Geotech Vol.41 (2004), p.1233.

[7] Xinxi Liu, Yuanyou Xia, Xianshu Zhang and Ruiqing Guo: Chinese Journal of Rock Mechanics and Engineering (in Chinese). Vol. 8 (2005), p.1439.

[8] Donglin Zhu,Guangming Ren,Dexin Nie and Xiurun Ge: Hydrogeology and Engineering Geology (in Chinese). Vol. 3 (2002), p.6.

[9] Shouyi Xie, Weiya Xu: Engineering Journal of Wuhan University (in Chinese). Vol. 1 (2000), p.21.

[10] Weimin Zhang, Lanyun Chen: Chinese Journal of Rock Mechanics and Engineering (in Chinese). Vol. 2 (2005), p.5319.

[11] Yan Liu, Haiping Wang, Yongcai Jiang and Keqiang He: Chinese Journal of Rock Mechanics and Engineering (in Chinese). Vol. 19 (2005), p.3571.

[12] Wu Yi, Zhaoping Meng, Qinglin Yi. Theory and Method of Landslide Stability Prediction in the Three Gorges Reservoir Area(in Chinese)(Science press, Beijing 2011)

[13] Hongjian Liao, Qian Sheng, Shihang Gao and Zhiping Xu: Chinese Journal of Rock Mechanics and Engineering (in Chinese). Vol. 19 (2005), p.3354

[14] Caihua Liu, Jian Xu, Chuanlin Cao, Congxin Chen and Xiating Feng: Chinese Journal of Rock Mechanics and Engineering (in Chinese). Vol. 19 (2005), p.3529

[15] Yabo Hu, Li-yan Wang:Chinese Journal of Rock Mechanics and Engineering (in Chinese). Vol. 16 (2005), p.2997.

[16] Liling Liu, Kunlong Yin: Hydrogeology and Engineering Geology (in Chinese). Vol. 3 (2002), p.63.

[17] Hong Cao, Yingguang Fang: Chinese Journal of Rock Mechanics and Engineering (in Chinese). Vol. 6 (2004), p.906