IMHE OpenIR  > 山地灾害与地表过程重点实验室
Investigation of the strength recovery characteristics of a red-bed landslide soil by SHS and ultrasonic experiments
Yan, Qiwei; Li, Xinpo; Tang, Xiong; Wu, Yong; He, Siming
2021
Source PublicationBulletin of Engineering Geology and the Environment
ISSN1435-9537
Volume80Pages:5271–5278
Abstract

The strength recovery (healing) of the shear zone soil of a landslide during the dormant phase after the sliding affects the
reactivation of the landslide, and may play a key role in determining the stability of the landslide. In this paper, we report the
laboratory measurements of frictional strengthening characteristics of a red-bed landslide soil. Slide-hold-slide (SHS) experiments
and ultrasonic tests are performed on soil samples under natural moisture content and saturated conditions. The roles of
holding time, normal stress, and drainage conditions in friction enhancement are evaluated. All the experiments are performed
under room temperature. The saturated soil samples show the lowest recovery value of shear strength. It is found that red-bed
landslides have obvious healing properties. The recovery value log-linear depends on the holding time and proportional to the
normal stress, and the better the drainage condition is, the more obvious the recovery. Ultrasonic tests show that the wave speed
difference of soil sample before and after holding is proportional to the holding time.

KeywordRed-bed Landslides . Strength Recovery . Shs Experiments . Ultrasonic Experiments
Indexed BySCIE
Language英语
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/56036
Collection山地灾害与地表过程重点实验室
Corresponding AuthorLi, Xinpo; Wu, Yong
Recommended Citation
GB/T 7714
Yan, Qiwei,Li, Xinpo,Tang, Xiong,et al. Investigation of the strength recovery characteristics of a red-bed landslide soil by SHS and ultrasonic experiments[J]. Bulletin of Engineering Geology and the Environment,2021,80:5271–5278.
APA Yan, Qiwei,Li, Xinpo,Tang, Xiong,Wu, Yong,&He, Siming.(2021).Investigation of the strength recovery characteristics of a red-bed landslide soil by SHS and ultrasonic experiments.Bulletin of Engineering Geology and the Environment,80,5271–5278.
MLA Yan, Qiwei,et al."Investigation of the strength recovery characteristics of a red-bed landslide soil by SHS and ultrasonic experiments".Bulletin of Engineering Geology and the Environment 80(2021):5271–5278.
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