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Case Study: Effects of a Partial-Debris Dam on Riverbank Erosion in the Parlung Tsangpo River, China
Choi, Clarence Edward1,2; Cui, Yifei1; Au, Kelvin Yuk Kit1; Liu, Haiming1; Wang, Jiao3,4; Liu, Dingzhu3,4; Wang, Hao3,4
2018-03-01
发表期刊WATER
ISSN2073-4441
卷号10期号:3页码:12
摘要This paper examines two successive debris flows that deposited a total of 1.4 million m(3) of sediment into the Parlung Tsangpo River in China in 2010. As a result of these deposits, a partial-debris dam was formed in the river. This dam rerouted the discharge in the river along one of the riverbanks, which supported a highway. The rerouted discharge eroded the riverbank and the highway eventually collapsed. To enhance our understanding of the threat posed by partial-debris dams, a field investigation was carried out to measure the discharge in the river and to collect soil samples of the collapsed riverbank. Findings from the field investigation were then used to back-analyze fluvial erosion along the riverbank using a combined erosion framework proposed in this study. This combined framework adopts a dam-breach erosion model which can capture the progressive nature of fluvial erosion by considering the particle size distribution of the soil being eroded. The results from the back-analysis were then evaluated against unique high-resolution images obtained from satellites. This case study not only highlights the consequences of the formation of partial-debris dams on nearby infrastructure, but it also proposes the use of a combined erosion framework to provide a first-order assessment of riverbank stability. Unique high-resolution satellite images are used to assess the proposed erosion framework and key challenges in assessing erosion are discussed.
关键词river debris flow partial-debris dam fluvial erosion limit equilibrium analysis
DOI10.3390/w10030250
关键词[WOS]SOIL ; STABILITY ; FLOWS ; TIBET ; VARIABILITY ; SURFACES ; RAINFALL
语种英语
资助项目Hong Kong Research Grants Council[16209717] ; Hong Kong Research Grants Council[T22-603/15N] ; National Natural Science Foundation of China[5170091039] ; Hong Kong Jockey Club Charities Trust ; Opening Fund of State Key Laboratory of Hydraulics and Mountain River Engineering[SKHL1609] ; HKUST Jockey Club Institute for Advanced Study ; Hong Kong Jockey Club Disaster Preparedness and Response Institute[HKJCDPRI18EG01]
WOS研究方向Water Resources
WOS类目Water Resources
WOS记录号WOS:000428516000015
项目资助者Hong Kong Research Grants Council ; National Natural Science Foundation of China ; Hong Kong Jockey Club Charities Trust ; Opening Fund of State Key Laboratory of Hydraulics and Mountain River Engineering ; HKUST Jockey Club Institute for Advanced Study ; Hong Kong Jockey Club Disaster Preparedness and Response Institute
出版者MDPI
引用统计
文献类型期刊论文
条目标识符http://ir.imde.ac.cn/handle/131551/23162
专题山地灾害与地表过程重点实验室
通讯作者Cui, Yifei
作者单位1.Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Hong Kong, Hong Kong, Peoples R China
2.HKUST Jockey Club Inst Adv Study, Hong Kong, Hong Kong, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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GB/T 7714
Choi, Clarence Edward,Cui, Yifei,Au, Kelvin Yuk Kit,et al. Case Study: Effects of a Partial-Debris Dam on Riverbank Erosion in the Parlung Tsangpo River, China[J]. WATER,2018,10(3):12.
APA Choi, Clarence Edward.,Cui, Yifei.,Au, Kelvin Yuk Kit.,Liu, Haiming.,Wang, Jiao.,...&Wang, Hao.(2018).Case Study: Effects of a Partial-Debris Dam on Riverbank Erosion in the Parlung Tsangpo River, China.WATER,10(3),12.
MLA Choi, Clarence Edward,et al."Case Study: Effects of a Partial-Debris Dam on Riverbank Erosion in the Parlung Tsangpo River, China".WATER 10.3(2018):12.
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