A TPDP-MPM-based approach to understanding the evolution mechanism of landslide-induced disaster chain

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	A TPDP-MPM-based approach to understanding the evolution mechanism of landslide-induced disaster chain
	Du, Wenjie ; Sheng, Qian ; Fu, Xiaodong ; Chen, Jian ; Zhou, Yongqiang
	2022-08-01
发表期刊	JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
ISSN	1674-7755
卷号	14 期号:4 页码:1200
摘要	With complex topographic and hydrological characteristics, the landslide-induced surge disaster chain readily develops in mountainous and gorge areas, posing a huge challenge for infrastructure construction. This landslide-induced surge disaster chain involves a complex fluid-solid coupling between the landslide mass and a water body and exhibits complex energy conversion and dissipation characteristics, which is challenging to deal with using traditional finite element analysis. In this study, the energy evolution characteristics in the whole process of the disaster chain were first investigated, and the momentum-conservation equations for different stages were established. Then, the two-phase double-point material point method (TPDP-MPM) was used to model the landslide-induced surge disaster chain, and an experiment involving block-induced surge was modeled and simulated to validate this method. Finally, three generalized models were established for the landslide-induced surge process in a U-shaped valley, including subaerial, partly submerged, and submarine scenarios. The interaction mechanism between the landslide mass and the water body in the disaster chain was revealed by defining the system energy conversion ratio and the mechanism of evolution of the disaster chain from the perspective of energy. The results help further evaluate the secondary disasters, given the submerged position of the landslide mass. (C) 2022 Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Production and hosting by Elsevier B.V.
关键词	Disaster chain Landslide-induced surge Material point method (MPM) Energy evolution U-shaped valley
学科领域	Engineering
语种	英语
WOS类目	Engineering, Geological
WOS记录号	WOS:000838465100016
出版者	SCIENCE PRESS
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://119.78.100.198/handle/2S6PX9GI/35019
专题	中科院武汉岩土力学所
作者单位	1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
推荐引用方式 GB/T 7714	Du, Wenjie,Sheng, Qian,Fu, Xiaodong,et al. A TPDP-MPM-based approach to understanding the evolution mechanism of landslide-induced disaster chain[J]. JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,2022,14(4):1200.
APA	Du, Wenjie,Sheng, Qian,Fu, Xiaodong,Chen, Jian,&Zhou, Yongqiang.(2022).A TPDP-MPM-based approach to understanding the evolution mechanism of landslide-induced disaster chain.JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING,14(4),1200.
MLA	Du, Wenjie,et al."A TPDP-MPM-based approach to understanding the evolution mechanism of landslide-induced disaster chain".JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING 14.4(2022):1200.