IMHE OpenIR  > 山地灾害与地表过程重点实验室
An example of a hazard and risk assessment for debris flows-A case study of Niwan Gully, Wudu, China
Ourang Chaojun1,2,3; Wang Zhongwen1; An Huicong2,3; Liu Xingrong4; Wang Dongpo1
Corresponding AuthorWang, Dongpo(wangdongpo2014@cdut.edu.cn)
2019
Source PublicationENGINEERING GEOLOGY
ISSN0013-7952
EISSN1872-6917
Volume263Pages:105351
SubtypeArticle
Contribution Rank2
AbstractThe highly geologically active, structurally complex Bailongjiang river basin, Longnan City, Gansu Province hosts many debris-flow gullies. The recent Wenchuan and Jiuzhaigou earthquakes have increased the amount of source material available in these debris flow gullies, and the disturbed nature of the slopes makes them prone to failure under high rainfall, increasing the risk of large-scale debris flows. Moreover, poor urban planning in the region may multiply the human and economic losses caused by debris flows. Therefore, it is necessary to determine the potential hazard zones associated with such debris flows and to implement debris flow hazard and risk assessment. In this paper, Niwan gully is chosen as the study object, as it is characterized by repeated debris flow outbreaks and an ill-considered urban planning at the outlet of the gully. A depth-integrated continuum method is adopted to determine the potential hazard zones of debris flows with different recurrence intervals. The debris flow inundation and evolutionary trajectory are shown to be reasonably comparable with historical debris flows. A two-factor model that couples maximum flow depth with momentum is used to better classify the hazard zones. This study also provides a complete and efficient means to determine the values of debris flow parameters and to implement a hazard and risk assessment based on the solid material reserve method and a probabilistic method. This proposed approach efficiently generated a debris flow risk distribution map that can be used for effective disaster prevention in the Bailongjiang River basin.
KeywordNiwan gully Debris flow Numerical modeling Hazard assessment Risk assessment
DOI10.1016/j.enggeo.2019.105351
Indexed BySCI
WOS KeywordRUNOUT CHARACTERISTICS ; SICHUAN PROVINCE ; LONGCHI AREA ; RAINFALL ; MODEL ; EARTHQUAKE ; SIMULATION ; PREDICTION ; LANDSLIDE ; CITY
Language英语
Funding ProjectNSFC[41572303] ; NSFC[41520104002] ; CAS Key Research Program of Frontier Sciences[QYZDY-SSW-DQC006] ; Joint Project of GAS and CAS[2017HZ03] ; CAS Youth Innovation Promotion Association ; Key Laboratory of Mountain Hazards and Surface Process
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000501407600011
Funding OrganizationNSFC ; CAS Key Research Program of Frontier Sciences ; Joint Project of GAS and CAS ; CAS Youth Innovation Promotion Association ; Key Laboratory of Mountain Hazards and Surface Process
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/33559
Collection山地灾害与地表过程重点实验室
Corresponding AuthorWang Dongpo
Affiliation1.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China;
2.Key Laboratory of Mountain Hazards and Surface Process & Institute of Mountain Hazards and Environment (IMHE), Chinese Academy of Sciences, Chengdu 610041, China;
3.University of Chinese Academy of Sciences, Beijing 100049, China;
4.Geological Hazards Prevention Institute, Gansu Academy of Sciences, Lanzhou 73000, China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Ourang Chaojun,Wang Zhongwen,An Huicong,et al. An example of a hazard and risk assessment for debris flows-A case study of Niwan Gully, Wudu, China[J]. ENGINEERING GEOLOGY,2019,263:105351.
APA Ourang Chaojun,Wang Zhongwen,An Huicong,Liu Xingrong,&Wang Dongpo.(2019).An example of a hazard and risk assessment for debris flows-A case study of Niwan Gully, Wudu, China.ENGINEERING GEOLOGY,263,105351.
MLA Ourang Chaojun,et al."An example of a hazard and risk assessment for debris flows-A case study of Niwan Gully, Wudu, China".ENGINEERING GEOLOGY 263(2019):105351.
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