Research on the Micro-Structure Change in the Slide-Zone Soil in Loess Landslide Caused by Train-Induced Long-Term Vibration
详细信息
- 责任者：Ren Quan (The State Key Laboratory of Continental Dynamics ; Department of Geology ; Northwest University ; Xi’an 710069 ; China) ; Wang Jiading
- 刊名：Hydrogeology and Engineering Geology
- 出版年：2013
- 卷期：40(4)
- 关键词：滑坡 ; landslides ; 微结构 ; microtexture
- 页码：p.117-120
- 图表：illus., 2 tables, 10 refs.
- 分类号：1702
- issnNo：ISSN1000-3665
- isbnNo：CN11-2202/P
摘要
Based on numerous dynamic triaxial and SEM tests,this paper examines the characteristic changes in porosity micro-structure of loess slide-zone soil under the dynamic load.The results show that under the dynamic triaxial test,the structure of the samples become more compact and stable,and loess pore breaks up and show the characteristics of orientation.Based on the results,the mechanism of loess landslide induced by long-term vibration is presented,following minor amplitude and long-term vibration—Micro-structure changed—among soil particles cemented weakened—seismic subsidence of loess—soil shear strength reduction—state of stress changed—shear failure produced in slope toe—shear stress adjustment—shear failure produced in slope(continuous cycle)—slip surface produced—loess landslide.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |