中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
A Thermo-Poro-Mechanics Model Predicts the Transition from Creep to Rapid Movement of Large Landslides

文献类型:期刊论文

作者Zhang, Huanhuan2,3; Liu, Wei2,3; He, Siming2,3; Hu, Wei1
刊名ROCK MECHANICS AND ROCK ENGINEERING
出版日期2024-05-20
页码19
关键词Large landslide Rapid movement Thermo-poro-mechanics Friction strengthening Creep
ISSN号0723-2632
DOI10.1007/s00603-024-03980-w
英文摘要

Risks associated with large landslides pose a severe threat to human life and property. Hence, the creep phase, the signal before the occurrence of large landslides, plays a significant role in the safety of mountainous areas. However, the mechanism of movement in the creep phase remains unclear. In this study, landslide events were divided into six blocks based on a thermo-poro-mechanical model. Blocks represent different landslide areas, which cannot be viewed collectively because of their varying external environments or intrinsic properties. We found that the phases of movement (stationary, creep, and rapid) of different blocks differed. Dividing the landslide into blocks may compensate for the disadvantage that a single sliding body model cannot reflect local creep. Additionally, friction strengthening and weakening were considered in this model. Friction strengthening refers to the phenomenon in which the friction coefficient increases with velocity, whereas friction weakening refers to the phenomenon in which the friction coefficient decreases with velocity. In this study, friction strengthening and weakening occurred before and after the critical velocity, respectively. Our findings suggest that the rapid movement of a landslide is mainly affected by the friction-weakening stage and the thermal-pressure generation stage. Furthermore, the former has a more profound influence than the latter. Notably, this model shows that the creep phase is controlled by friction strengthening. This study is expected to stimulate new ideas for landslide prediction. The creep phase is controlled by frictional strengthening.Rapid movement of landslides is affected by friction weakening and thermopressure.Multi-block models are better suited to studying local creep.Different instincts for landslide areas should be considered comprehensively.

WOS关键词TSAOLING LANDSLIDE ; BLOCK MODEL ; RUN-OUT ; FRICTION ; EARTHQUAKE ; PATTERNS ; CRITERIA ; FAILURE ; STEADY ; SLIP
资助项目National Key Research and Development program of China[2023YFC3008300] ; National Key Research and Development program of China[2023YFC3008304] ; Major Program of the National Natural Science Foundation of China[42090051] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2021373]
WOS研究方向Engineering ; Geology
语种英语
WOS记录号WOS:001228237800002
出版者SPRINGER WIEN
资助机构National Key Research and Development program of China ; Major Program of the National Natural Science Foundation of China ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
源URL[http://ir.imde.ac.cn/handle/131551/58093]  
专题成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者Liu, Wei; He, Siming
作者单位1.Chengdu Univ Technol, State Key Lab Geohazard Prevent & Geoenvironm Prot, Chengdu, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, State Key Lab Mt Hazards & Engn Safety, Chengdu 610299, Peoples R China
推荐引用方式
GB/T 7714
Zhang, Huanhuan,Liu, Wei,He, Siming,et al. A Thermo-Poro-Mechanics Model Predicts the Transition from Creep to Rapid Movement of Large Landslides[J]. ROCK MECHANICS AND ROCK ENGINEERING,2024:19.
APA Zhang, Huanhuan,Liu, Wei,He, Siming,&Hu, Wei.(2024).A Thermo-Poro-Mechanics Model Predicts the Transition from Creep to Rapid Movement of Large Landslides.ROCK MECHANICS AND ROCK ENGINEERING,19.
MLA Zhang, Huanhuan,et al."A Thermo-Poro-Mechanics Model Predicts the Transition from Creep to Rapid Movement of Large Landslides".ROCK MECHANICS AND ROCK ENGINEERING (2024):19.

入库方式: OAI收割

来源:成都山地灾害与环境研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。