平推式滑坡中底滑面承压水渗流形式对其稳定性的影响

doi:10.16285/j.rsm.2016.1088

›› 2018, Vol. 39 ›› Issue (4): 1401-1410.doi: 10.16285/j.rsm.2016.1088

平推式滑坡中底滑面承压水渗流形式对其稳定性的影响

李伟^{1, 2}，许强^{1, 2}，吴礼舟^{1, 2}，李斯琦^{1, 2}

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

收稿日期:2016-05-13 出版日期:2018-04-11 发布日期:2018-06-06
作者简介:李伟，男，1994年生，学士，主要从事地质工程方面的研究工作。
基金资助:
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)。

Influence of seepage forms of confined water on translational landslide

LI Wei^{1, 2}, XU Qiang^{1, 2}, WU Li-zhou^{1, 2}, LI Si-qi^{1, 2}

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

Received:2016-05-13 Online:2018-04-11 Published:2018-06-06
Supported by:
This work was supported by the Key Program of the National Natural Science Foundation of China (41630640) and the National Science Fund for Creative Research Groups (41521002).

摘要/Abstract

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。

关键词: 平推式滑坡, 承压水, 渗流形式, 扬压力, 斜坡稳定性

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.

Key words: translational landslide, confined water, seepage forms, uplift pressure, slope stability

中图分类号:

TU 42

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]. , 2018, 39(4): 1401-1410.

LI Wei, XU Qiang, WU Li-zhou, LI Si-qi, . Influence of seepage forms of confined water on translational landslide[J]. , 2018, 39(4): 1401-1410.

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平推式滑坡中底滑面承压水渗流形式对其稳定性的影响

Influence of seepage forms of confined water on translational landslide

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