西南某电厂高填方边坡不稳定变形的数值与物理模拟研究 |
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引用本文: | 许峰,邓辉,沈曼,刘丹.西南某电厂高填方边坡不稳定变形的数值与物理模拟研究[J].路基工程,2014,0(2):137-141. |
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作者姓名: | 许峰 邓辉 沈曼 刘丹 |
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作者单位: | 1.成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都 610059 |
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摘 要: | 边坡稳定性问题一直是工程地质专业较突出的问题之一,而在稳定性分析过程中,高填方边坡的不稳定变形是工程设计、治理的最终核心问题。以西南某电厂高填方边坡为例,采用FLAC3D对高填方边坡进行三维实体模拟及变形计算,同时,利用降雨物理模拟试验对边坡变形进行验证分析。通过数值模拟和物理模拟试验,得出以下结论:降雨条件下,土体达到饱和时,边坡变形达到最大值,且产生应力集中现象,致使边坡发生进一步破坏;通过物理模拟验证边坡的具体变形,分析得出降雨对边坡造成变形的作用机理。
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关 键 词: | 高填方边坡 不稳定变形 降雨 数值模拟 物理模拟 |
收稿时间: | 2019-11-11 |
Study on Numerical and Physical Simulation of Instable Deformation of High Fill Slope at a Power Plant in the Southwest |
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Abstract: | Slope stability is a prominent issue in the field of engineering geology, wherein the instable deformation of high fill slopes is a core problem relating to engineering design and treatment in the stability analysis. Taking a high fill slope at a power plant in the southwest as an example, the 3D physical simulation and deformation computation were conducted against it with FLAC3D software; at the same time, using rainfall simulation experiment, the slope stability was verified. Through numerical and physical simulation, it was concluded that on the condition of rainfall, the soil mass reaches a state of saturation and the slope has a maximum deformation with stress concentration, resulting in further failure arising at the slope; through verification of specific deformation of slope from physical simulation, the mechanism of effect of rainfall on the slope deformation was analyzed. |
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