| Formation Mechanism and Stability Assessment of the Colluvial Deposit Slope in Zuoyituo |
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| 引用本文： | JianWenxing ZhangYihu YinHongmei. Formation Mechanism and Stability Assessment of the Colluvial Deposit Slope in Zuoyituo[J]. 中国地质大学学报(英文版), 2004, 15(4): 395-400 |
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| 作者姓名： | JianWenxing ZhangYihu YinHongmei |
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| 作者单位： | FacultyofEngineering,ChinaUniversityofGeosciences,Wuhan430074,China |
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| 基金项目： | Thepaperissupportedbytheproject“ReconnaissanceandMonitoringDesignofSongjiazhuangLandslideinBadongCounty,HubeiProvince”. |
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| 摘 要： | 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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| 关 键 词： | 崩积沉淀斜坡 结构性质 稳定性 预测方法 滑坡 |
Formation Mechanism and Stability Assessment of the Colluvial Deposit Slope in Zuoyituo |
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| Jian Wenxing,Zhang Yihu,YIN Hongmei. Formation Mechanism and Stability Assessment of the Colluvial Deposit Slope in Zuoyituo[J]. Journal of China University of Geosciences, 2004, 15(4): 395-400 |
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| Authors: | Jian Wenxing Zhang Yihu YIN Hongmei |
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| Abstract: | 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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| Keywords: | Zuoyituo colluvial deposit slope formation mechanism improved remained slip force method back-analysis stability assessment prevention method |
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