| 降雨诱发浅层滑坡影响因素的解析分析 |
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| 引用本文： | 李宁,刘冠麟,陈有亮,许建聪,杜曦,韦智友.降雨诱发浅层滑坡影响因素的解析分析[J].上海理工大学学报,2018,40(1):65-75. |
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| 作者姓名： | 李宁 刘冠麟 陈有亮 许建聪 杜曦 韦智友 |
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| 作者单位： | 上海理工大学 环境与建筑学院, 上海 200093;同济大学 土木工程学院, 上海 200092,上海理工大学 环境与建筑学院, 上海 200093,上海理工大学 环境与建筑学院, 上海 200093,同济大学 土木工程学院, 上海 200092,新南威尔士大学 土木与环境学院, 悉尼 2033,上海理工大学 环境与建筑学院, 上海 200093 |
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| 基金项目： | 国家自然科学基金资助项目（0872179，U1765110）；上海市自然科学基金资助项目（16ZR1423300） |
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| 摘 要： | 采用笔者提出的无限长斜坡降雨入渗解析解结合非饱和土抗剪强度理论,提出了一个用于降雨诱发浅层滑坡安全系数计算的解析表达式,并对浅层滑坡的多种影响因素进行解析分析.结果表明:基质吸力减小直至消失是降雨诱发浅层滑坡的主要途径.减饱和系数、前期降雨强度、边坡坡度、土体储水能力是影响边坡浅层稳定性的重要因素,而后期降雨强度只有在降雨强度较大时才会对边坡浅层稳定性有明显影响,饱和渗透系数只有在接近降雨强度时,对边坡浅层稳定性的影响才较大.
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| 关 键 词： | 降雨入渗 浅层滑坡 解析公式 稳定性 非饱和土 |
| 收稿时间： | 2017/2/22 0:00:00 |
Analytic Analysis on the Influencing Factors of Rainfall-Induced Shallow Landslide |
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| LI Ning,LIU Guanlin,CHEN Youliang,XU Jiancong,DU Xi and WEI Zhiyou.Analytic Analysis on the Influencing Factors of Rainfall-Induced Shallow Landslide[J].Journal of University of Shanghai For Science and Technology,2018,40(1):65-75. |
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| Authors: | LI Ning LIU Guanlin CHEN Youliang XU Jiancong DU Xi and WEI Zhiyou |
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| Institution: | School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China;School of Civil Engineering, Tongji University, Shanghai 200092, China,School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China,School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China,School of Civil Engineering, Tongji University, Shanghai 200092, China,School of Civil and Environmental Engineering, The University of New South Wales, Sydney 2033, Australia and School of Environment and Architecture, University of Shanghai for Science and Technology, Shanghai 200093, China |
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| Abstract: | By virtue of the water pressure formula proposed by the author previously combined with the theory of shear strength of unsaturated soil,an analytical safety factor formula for the rainfall-induced shallow landslide was proposed.The influencing factors of the shallow landslide were analyzed.The results show that the rainfall-induced shallow landslide is mainly due to the decrease of matric suction.The desaturation coefficient,antecedent-rainfall intensity,slope gradient and soil water storage capacity have significant effects on the rainfall-induced shallow landslide.The effect of the rainfall intensity on the stability of the slope is obvious only when the rainfall intensity is large,while the saturated permeability would affect the shallow landslide significantly only when it approaches the rainfall intensity. |
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| Keywords: | rainfall infiltration shallow landslide analytic formula stability unsaturated soil |
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