Review of Investigations on Hazard Chains Triggered by River-Blocking Debris Flows and Dam-Break Floods | |
Chen, Huayong1,2,3; Ruan, Hechun2,3; Chen, Jiangang1,2,3; Li, Xiao2,3; Yu, Yunhan2,3 | |
刊名 | FRONTIERS IN EARTH SCIENCE |
2022-05-10 | |
卷号 | 10页码:16 |
关键词 | debris flow dam river-blocking mechanism dam failure hazard chain floods |
ISSN号 | 无 |
DOI | 10.3389/feart.2022.830044 |
英文摘要 | The Tibetan Plateau suffers from various types of geohazards (collapses, landslides, and debris flows.) due to abrupt changes in complex topography and weather conditions. Global warming and frequent high-intensity earthquakes in recent years have exacerbated the situation. Collapses and landslides provide vast amount of soil and debris which are conveyed downstream by runoff caused by extreme rainfalls to form large-scale debris flows; then, the debris flows block rivers and finally form dam-break floods, that is, a hazard chain triggered by debris flows. Along the evolution direction of the hazard chain, the affected areas are constantly amplified. This study first summarizes the related research studies on river blockage, debris-flow dam failure, and the hazard chain triggered by debris flows and then points out the drawbacks of existing research studies. Overall, the research (including mechanism, risk assessment, key prevention, and control technologies) on the hazard chain triggered by debris flows is still in its infancy and is disconnected among single hazard types in the hazard chain; meanwhile, the understanding of the mechanism of debris flow blocking the river is not enough; the established model and discriminant have minimal application scope, and there is no empirical model and dynamic model of debris-flow dam failure. Finally, several key scientific issues of this field were raised: 1) it is necessary to elaborate the coupling mechanism of debris-flow dam formation and construct the discriminant and numerical model of debris flow blocking the river with high precision and a wide application range. 2) It is necessary to further study the failure mechanism of a debris-flow dam, construct the numerical model of the failure process of a debris-flow dam, and accurately simulate the outburst flood hydrograph. 3) It is necessary to clarify the critical transformation conditions and dynamic evolution process of the hazard chain caused by debris flows, complete the accurate quantitative simulation of the whole disaster chain process, then establish a complete risk assessment system of the hazard chain, and finally develop some key prevention and control technologies suitable for the hazard chain. |
资助项目 | National Key R&D Program of China[2018YFE0100100] ; National Natural Science Foundation of China[U20A20112] ; National Natural Science Foundation of China[41771045] ; CAS Light of West China Program |
WOS关键词 | LAKE OUTBURST FLOOD ; LANDSLIDE DAM ; PEAK OUTFLOW ; NUMERICAL-SIMULATION ; GRAIN COMPOSITION ; FAILURE ; EROSION ; PROPAGATION ; DOWNSTREAM ; PREDICTION |
WOS研究方向 | Geology |
语种 | 英语 |
出版者 | FRONTIERS MEDIA SA |
WOS记录号 | WOS:000802261200001 |
资助机构 | National Key R&D Program of China ; National Natural Science Foundation of China ; CAS Light of West China Program |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/56676] |
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 | Chen, Jiangang |
作者单位 | 1.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Inst Mt Hazards & Environm, Chengdu, Peoples R China |
推荐引用方式 GB/T 7714 | Chen, Huayong,Ruan, Hechun,Chen, Jiangang,et al. Review of Investigations on Hazard Chains Triggered by River-Blocking Debris Flows and Dam-Break Floods[J]. FRONTIERS IN EARTH SCIENCE,2022,10:16. |
APA | Chen, Huayong,Ruan, Hechun,Chen, Jiangang,Li, Xiao,&Yu, Yunhan.(2022).Review of Investigations on Hazard Chains Triggered by River-Blocking Debris Flows and Dam-Break Floods.FRONTIERS IN EARTH SCIENCE,10,16. |
MLA | Chen, Huayong,et al."Review of Investigations on Hazard Chains Triggered by River-Blocking Debris Flows and Dam-Break Floods".FRONTIERS IN EARTH SCIENCE 10(2022):16. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
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。
修改评论