A Study on the Mechanism of Loess Landslide Induced by Cyclic Load
详细信息
- 责任者：Yang Zhe (Xi’an Coal Designeering Co. ; Ltd ; Xi’an 710054 ; China) ; Yuan Jinhui
- 刊名：Hydrogeology and Engineering Geology
- 出版年：2010
- 卷期：37(5)
- 关键词：循环加载 ; cyclic loading ; 滑坡 ; landslides
- 页码：p.67-71
- 图表：3 illus., 1 table, 10 refs.
- 分类号：1800
- issnNo：ISSN1000-3665
- isbnNo：CN11-2202/P
摘要
With the development of high-speed rail,dynamic characteristics of loess are studied under ‘minor amplitude and long-term’ vibration induced by high-speed train through Undrained Compression Test in order to better serve the prevention and treatment of loess landslide along the high-speed rail in the loess region.The results indicate that dynamic strength of loess reduces with the number of vibration increase under cyclic loading of the train,and dynamic subsidence occurrs in the loess during the vibration.Known by the SEM,loess dynamic subsidence is mainly due to large particles being broken by vibration,large or medium porosity being reduced,and soil being compacted constantly.Based on it,the mechanism of loess landslide induced by cyclic load is presented and obtained by applying the principle of entropy increase to explain the mechanism of loess landslide at the first time.It will provide a new theory basis for the loess landslide prevention along the high-speed rail.