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Volume 15 Issue 4
Dec 2004
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Article Contents
Wenxing Jian, Yihu Zhang, Hongmei Yin. Formation Mechanism and Stability Assessment of the Colluvial Deposit Slope in Zuoyituo. Journal of Earth Science, 2004, 15(4): 395-400.
Citation: Wenxing Jian, Yihu Zhang, Hongmei Yin. Formation Mechanism and Stability Assessment of the Colluvial Deposit Slope in Zuoyituo. Journal of Earth Science, 2004, 15(4): 395-400.

Formation Mechanism and Stability Assessment of the Colluvial Deposit Slope in Zuoyituo

Funds:

the project " Reconnaissance and Monitoring Design of Songjiazhuang Landslide in Badong County, Hubei Province" 

  • Received Date: 28 Dec 2003
  • Accepted Date: 05 Mar 2004
  • The basic features of the colluvial deposit slope in Zuoyituo such as geological conditions, dimensions, slip surfaces and groundwater conditions are described concisely in this paper.The formation mechanism of the slope is discussed.It is considered that the formation of the colluvial deposit slope in Zuoyituo has undergone accumulation, slip, load, deformation and failure.The effects of rainfall on slope stability are categorized systematically based on existing methodology, and ways to determine the effects quantitatively are presented.The remained slip force method is improved by the addition of quantitative relations to the existing formulae and programs.The parameters of the colluvial deposit slope are determined through experimentation and the method of back-analysis.The safety factors of the slope are calculated with the improved remained slip force method and the Sarma method.The results show that rainfall and water level in the Yangtze River have a significant effect on the stability of the colluvial deposit slope in Zuoyituo.The hazards caused by the instability of the slope are assessed, and prevention methods are put forward.

     

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  • Pan, J.Z., 1984. Stability of Constructions and Landslide Analysis. Water Publishing House, Beijing. 120 -140 (in Chinese)
    Standard Codes for the People' s Republic of China, 2002. Technical Code for Building Slope Engineering (GB50331 - 2002). China Architecture & Building Press, Beijing (in Chinese)
    Zhang, C.Y., Wang, S.T., Wang, L.S., 2002. The Analysis Principles of Engineering Geology. 3rd Edition. Geological Publishing House, Beijing. 263-277 (in Chinese)
    Zhang, Y.H., Yin, H.M., Jian, W.X., 2004. The Remained Slip Force Method Considering the Effect of Rainfall and Its Application to Assessment of Slope Stability. Rock and Soil Mechanics, 25(4): 628 -631 (in Chinese with English Abstract)
    Zhou, X.J., Guo, Q.L., 2001. Analysis of the Basic Features and the Mechanism of the Zuoyituo Landslide in Badong County. Geological Science and Technology Information, 20(1): 87 -90 (in Chinese with English Abstract)
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