| 平推式滑坡中底滑面承压水渗流形式对其稳定性的影响 |
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| 引用本文： | 李伟,许强,吴礼舟,李斯琦.平推式滑坡中底滑面承压水渗流形式对其稳定性的影响[J].岩土力学,2018,39(4):1401-1410. |
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| 作者姓名： | 李伟 许强 吴礼舟 李斯琦 |
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| 作者单位： | 1. 成都理工大学 环境与土木工程学院，四川 成都 610059；2. 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，四川 成都 610059 |
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| 基金项目： | 国家自然科学基金重点项目(No. 41630640)；国家创新研究群体科学基金(No. 41521002)。 |
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| 摘 要： | 研究平推式滑坡中承压水渗流形式对滑坡稳定性的影响，有利于准确评价斜坡稳定性，对此类滑坡的成灾机制研究具有重要的理论指导意义。基于承压水渗流宽度变化规律，将平推式滑坡中底滑面承压水渗流形式分为辐射流和非辐射流。依据不同的渗流形式，构建了相应的平推式滑坡分析模型，结合地下水向河渠稳定运动相关理论，推导了不同模型中承压水的水头线方程和滑面上扬压力的计算公式，提出了扬压力的3种分布形式，并对平推式滑坡启动判据进行修正，最后结合滑坡实例分析了不同渗流形式对滑坡稳定性的影响规律。
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| 关 键 词： | 平推式滑坡 承压水 渗流形式 扬压力 斜坡稳定性 |
| 收稿时间： | 2016-05-13 |
Influence of seepage forms of confined water on translational landslide |
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| LI Wei,XU Qiang,WU Li-zhou,LI Si-qi.Influence of seepage forms of confined water on translational landslide[J].Rock and Soil Mechanics,2018,39(4):1401-1410. |
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| Authors: | LI Wei XU Qiang WU Li-zhou LI Si-qi |
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| Institution: | 1. College of Environment and Civil Engineering, Chengdu University of Technology, Chengdu, Sichuan 610059, China; 2. State Key Laboratory of Geological Hazard Prevention and Geological Environment Protection, Chengdu University of Technology, Chengdu, Sichuan 610059, China |
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| Abstract: | It is important to study seepage forms of confined water on translational landslide, which is helpful to accurately evaluate the slope stability and provides a reasonable theoretical guidance for studies on the disaster mechanism on translational landslide. Based on the variation law of seepage width of confined water, the seepage forms of confined water on slide plane of translational landslide are divided into the radiation flow and the non-radiative flow. According to different seepage forms, the translational landslide analysis models are established. Based on the theory of groundwater flow to canals, the water head line equation of confined water and the calculation formula of uplift pressure in different models are deduced. Furthermore, three kinds of uplift pressure distribution forms are put forward, and then the starting criterion of translational landslide is modified. Finally, based on a case of translational landslide, the law of slope stability under different forms of seepage is discussed. |
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| Keywords: | translational landslide confined water seepage forms uplift pressure slope stability |
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