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	Characteristics of a Debris Flow Disaster and Its Mitigation Countermeasures in Zechawa Gully, Jiuzhaigou Valley, China
	Gong Xing-Long1,2,4; Chen Kun-Ting4; Chen Xiao-Qing1,2,4; You Yong4; Chen Jian-Gang2,4; Zhao Wan-Yu4; Lang Jie3
刊名	WATER
	2020
卷号	12期号:5页码:1256
关键词	debris flow Zechawa Gully mitigation countermeasures Jiuzhaigou Valley
ISSN号	0000
DOI	10.3390/w12051256
产权排序	1
文献子类	Article
英文摘要	On 8 August 2017, an Ms 7.0 earthquake struck Jiuzhaigou Valley, triggering abundant landslides and providing a huge source of material for potential debris flows. After the earthquake debris flows were triggered by heavy rainfall, causing traffic disruption and serious property losses. This study aims to describe the debris flow events in Zechawa Gully, calculate the peak discharges of the debris flows, characterize the debris flow disasters, propose mitigation countermeasures to control these disasters and analyse the effectiveness of countermeasures that were implemented in May 2019. The results showed the following: (1) The frequency of the debris flows in Zechawa Gully with small- and medium-scale will increase due to the influence of the Ms 7.0 Jiuzhaigou earthquake. (2) An accurate debris flow peak discharge can be obtained by comparing the calculated results of four different methods. (3) The failure of a check dam in the channel had an amplification effect on the peak discharge, resulting in a destructive debris flow event on 4 August 2016. Due to the disaster risk posed by dam failure, both blocking and deposit stopping measures should be adopted for debris flow mitigation. (4) Optimized engineering countermeasures with blocking and deposit stopping measures were proposed and implemented in May 2019 based on the debris flow disaster characteristics of Zechawa Gully, and the reconstructed engineering projects were effective in controlling a post-earthquake debris flow disaster on 21 June 2019.
电子版国际标准刊号	2073-4441
资助项目	Land and Resources Department of Sichuan Province[KJ-2018-24] ; National Natural Science Foundation of China[51709259] ; Foundation for Young Scientists of the Institute of Mountain Hazards and Environment, CAS[SDS-QN-1912] ; CAS Light of West China Program ; Youth Innovation Promotion Association CAS[2017426] ; Open Foundation of Key Laboratory of Mountain Hazards and Earth Surface Processes, CAS
WOS关键词	FORMATION MECHANISM ; RAINFALL THRESHOLD ; EARTHQUAKE ; DAM ; SICHUAN ; FAULT ; PERFORMANCE ; SEDIMENT ; PROVINCE ; DESIGN
WOS研究方向	Water Resources
语种	英语
出版者	MDPI
WOS记录号	WOS:000555915200035
资助机构	Land and Resources Department of Sichuan Province ; National Natural Science Foundation of China ; Foundation for Young Scientists of the Institute of Mountain Hazards and Environment, CAS ; CAS Light of West China Program ; Youth Innovation Promotion Association CAS ; Open Foundation of Key Laboratory of Mountain Hazards and Earth Surface Processes, CAS
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/35366]
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 Xiao-Qing
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China; 3.Jiuzhai Valley Natl Pk Adm Bur, Chengdu 623402, Sichuan, Peoples R China 4.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China;
推荐引用方式 GB/T 7714	Gong Xing-Long,Chen Kun-Ting,Chen Xiao-Qing,et al. Characteristics of a Debris Flow Disaster and Its Mitigation Countermeasures in Zechawa Gully, Jiuzhaigou Valley, China[J]. WATER,2020,12(5):1256.
APA	Gong Xing-Long.,Chen Kun-Ting.,Chen Xiao-Qing.,You Yong.,Chen Jian-Gang.,...&Lang Jie.(2020).Characteristics of a Debris Flow Disaster and Its Mitigation Countermeasures in Zechawa Gully, Jiuzhaigou Valley, China.WATER,12(5),1256.
MLA	Gong Xing-Long,et al."Characteristics of a Debris Flow Disaster and Its Mitigation Countermeasures in Zechawa Gully, Jiuzhaigou Valley, China".WATER 12.5(2020):1256.

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