JRMGE / Vol 15 / Issue 1
Geostructures, dynamics and risk mitigation of high-altitude and long-runout rockslides
Yueping Yin, Bin Li, Yang Gao, Wenpei Wang, Shilin Zhang, Nan Zhang
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a China Institute of Geological Environment Monitoring, China Geological Survey, Beijing, 100081, China
b Key Laboratory of Active Tectonics and Geological Safety, Ministry of Natural Resources, Beijing, 100081, China
c Institute of Geomechanics, Chinese Academy of Geological Sciences, China Geological Survey, Beijing, 100081, China
d Department of Geological Engineering, Southwest Jiaotong University, Chengdu, 610031, China
2023, 15(1): 66-101. doi:10.1016/j.jrmge.2022.11.001
Received: 2022-11-07 / Revised: 2022-11-12 / Accepted: 2022-11-14 / Available online: 2022-11-25
2023, 15(1): 66-101.
doi:10.1016/j.jrmge.2022.11.001
Received: 2022-11-07
Revised: 2022-11-12
Accepted: 2022-11-14
Available online: 2022-11-25
Long-runout rockslides at high altitude could cause disaster chain in river basins and destroy towns and major infrasturctures. This paper firstly explores the initiation mechanism of high-altitude and long-runout rockslides. Two types of sliding-prone geostructure models, i.e. the fault control type in orogenic belt and the fold control type in platform area, are proposed. Then, large-scale experimental apparatus and associated numerical simulations are conducted to understanding the chain-style dynamics of rockslide-debris avalanche-debris flow. The results reveal the fragmentation effects, the rheological behaviors and the boundary layer effect of long-runout avalanche-debris flow. The dynamic characteristics of quasi-static-transition-inertia state and solid-liquid coupling in rapid movement of rockslide-debris avalanche-debris flow are investigated. Finally, the risk mitigation strategy of the non-structure and structure for resilient energy dissipation are illustrated for initiation, transition and deposition zones. The structural prevention and mitigation methods have been successfully applied to the high-altitude and long-runout rockslides in Zhouqu and Maoxian of the Wenchuan earthquake zone, as well as the other major geohazards in Qinghai-Tibet Plateau and its adjacent areas.
Keywords: Rockslide, High-altitude and long-runout, Sliding-prone geostructure, Large-scale experimental apparatus, Risk mitigation strategy, Structural prevention technique
Article Data
Author(s) Information
Prof. Yueping Yin
yinypcgs@hotmail.com
yinyp@cigem.cn
Prof. Yueping Yin received his PhD degree at the China Academy of Geosciences in 1990. He is the Chief Geologist of the China Institute of Geo-Environment Monitoring directly under China Geological Survey, also serves as a member of the Expert Steering Committee of the China National Commission for Disaster Reduction. He had been elected as the President of International Consortium on Landslides under UNESCO and ISDR from 2014 to 2017, also is an associate editor of Landslides. Prof. Yin has conducted the researches on geological hazards and prevention since 1985. His research interests cover landslide prevention for failure mechanism and dynamics. He is now hosting a project on the mechanism and risk mitigation on landslides in Qinghai-Tibet Plateau due to earthquake. He has published more than 200 academic papers and is listed as one Highly Cited Chinese Researchers by Elsevier for years that his researches involved in Geo-risk mitigation at City and Mega Reservoir, etc.