Time effect on stability of embankment slope due to rainfall

TU Guo-xiang; HUANG Run-qiu

doi:10.16285/j.rsm.2015.S1.091

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Time effect on stability of embankment slope due to rainfall

更新时间：2026-06-25

- Time effect on stability of embankment slope due to rainfall
- Vol. 36, Issue S1, Pages: 523-530(2015)
- 作者机构：
  
  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
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2015.S1.091
  CLC： U213.1
- Online First：14 June 2018，
  
  Published：2015
- 稿件说明：
移动端阅览
TU Guo-xiang, HUANG Run-qiu. Time effect on stability of embankment slope due to rainfall[J]. 2015, 36(S1): 523-530.
DOI：

TU Guo-xiang, HUANG Run-qiu. Time effect on stability of embankment slope due to rainfall[J]. 2015, 36(S1): 523-530. DOI： 10.16285/j.rsm.2015.S1.091.

摘要

以某高速公路填筑试验路堤为例，基于非饱和土渗透及强度理论，采用渗流场与应力场、稳定性计算耦合的方法，对两种不同透水特性的路堤在降雨过程中孔隙水压力和稳定性系数随时间变化的特点及规律进行较为深入的探讨。结果表明，（1）透水性能较好的路堤斜坡下部降雨入渗要强于斜坡上部，透水性能较差的路堤斜坡，雨水往往以近似于均匀的形式入渗；（2）透水能力强的路堤斜坡在短暂的超强降雨或者强度较低但持续时间超长的降雨过程中，其最小稳定性系数易于出现滞后现象，一般滞后0.5～3 d，透水能力差的路堤斜坡最小稳定性系数有显著滞后特点，一般滞后7～15 d；（3）总降雨量一定、雨强大于等于50 mm/d条件下透水能力强斜坡能达到的最小稳定性系数随降雨时间增长而降低，而透水能力差的斜坡最小稳定性系数受雨强和降雨时间共同影响。

Abstract

Based on the permeability and strength theory of unsaturated soil

this study used two expressway embankments consisting of soil with significantly different permeabilities as examples to investigate the variations in pore water pressure and stability coefficient of the embankments during different rainfalls. The results show: (1) The rainfall infiltrates better in lower parts than upper parts of the embankment formed with high permeability soils; however

it infiltrates almost equably in the surface of embankment formed with less permeability soils. (2) The minimum stability coefficient of the embankment slope with high permeability occurred normally after rainfall about 0.5-3 days during the short and high intense rainfall process

or less intense and longtime rainfall process. And the minimum stability coefficient of embankment with less permeability lag behind rainfall more obvious

normally lagging 7-15 days behind rainfall. (3) When the total rainfall is constant

the minimum stability coefficient of the embankment slope with high permeability decrease as rainfall intensity increase. The embankments with low permeability are influenced by both rainfall intensity and duration.

关键词

Keywords

references

Views

328

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

The remained slip force method considering the effect of rainfall and its application to assessment of slope stability

Experimental study on drainage performance of reinforced improved soft rock residual soil under rainfall conditions

Study of time effect on top-down excavation of Shanghai Zhongshan Hospital

A time-varying analytic model of tailings slope and its application

Rainfall infiltration model of Huangtupo landslide in Three Gorges Reservoir area

Related Author

ZHANG Yi-hu

YIN Hong-mei

JIAN Wen-xing

YANG Jun-peng

DUAN Xiao-pei

ZHANG Qian

LI Bo-wen

WANG Yi-min

Related Institution

Engineering Faculty, China University of Geosciences

School of Civil Engineering and Transportation, South China University of Technology

Tianjin Municipal Engineering Design & Research Institute Co., Ltd.

Shenyuan Geotechnical Engineering Co., Ltd., Shanghai Xiandai Architectural Design Group

College of Environment and Resources, Fuzhou University

AI问答

⁰