Landslide simulation by a geotechnical model combined with a model for apparent friction change
Landslide simulation by a geotechnical model combined with a model for apparent friction change
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DOI：
10.1016/j.pce.2009.07.006
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发表时间：
2010-01-01
影响因子：
3.7
通讯作者：
Sassa, Kyoji
中科院分区：
文献类型：
--
作者：
Wang, Fawu;Sassa, Kyoji
1988年，Kyoji Sassa博士提出了一种岩土模型[Sassa，K.，1988.滑坡运动的土工模型。见：第五届滑坡国际研讨会论文集，第1卷，第110页。[37-56]以模拟滑坡运动并建立滑坡模拟的理论框架。2002年，Wang和Sassa基于环剪仪模拟滑坡运动的实验结果，提出了一个可以与Sassa原始岩土模型相结合的表观摩擦系数变化模型（这是滑坡运动的关键参数）。如表观摩擦系数变化模型所示，滑坡被视为两层结构，即，岩屑层和滑动带。在滑坡过程中，岩屑层厚度发生变化，滑带抗剪强度发生变化。在本文中，两个模型的简要介绍后，参数的研究，以显示不同的重要性，每个参数。此外，还介绍了三个案例研究：1995年翡翠道滑坡，1995年深湾滑坡，都在香港，和1903年弗兰克幻灯片在阿尔伯塔，加拿大，以显示结合两个模型的优势。(C)2009年由Elsevier Ltd.出版
In 1988, Dr. Kyoji Sassa proposed a geotechnical model [Sassa, K., 1988. Geotechnical model for the motion of landslides. In: Proceedings, 5th International Symposium on Landslides, vol. 1, pp. 37-56] to simulate landslide motion and to establish a theoretical framework for landslide simulation. In 2002, based on the experimental results of using a ring-shear apparatus for simulation of landslide motion, Wang and Sassa proposed a model for apparent friction coefficient change (which is a key parameter of landslide motion) that can be combined with Sassa's original geotechnical model. As presented in the model for apparent friction coefficient change, a landslide is considered as a two-layer structure, i.e., a debris layer and a sliding zone. During landsliding, the thickness of the debris layer changes, while shear resistance changes in the sliding zone. In this paper, after a brief introduction of the two models, a parametric study is presented to show the differing importance of each parameter. Also included is a presentation of three case studies: The 1995 Fei Tsui Road landslide, and the 1995 Shum Wan landslide, both in Hong Kong, and the 1903 Frank slide in Alberta, Canada to show the advantage of combining the two models. (C) 2009 Published by Elsevier Ltd.