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Article: Case Study: Effects of a partial-debris dam on riverbank erosion in the Parlung Tsangpo River, China

TitleCase Study: Effects of a partial-debris dam on riverbank erosion in the Parlung Tsangpo River, China
Authors
KeywordsLimit equilibrium analysis
River
Debris flow
Fluvial erosion
Partial-debris dam
Issue Date2018
Citation
Water (Switzerland), 2018, v. 10, n. 3, article no. 250 How to Cite?
Abstract© 2018 by the authors. 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.
Persistent Identifierhttp://hdl.handle.net/10722/273613
ISSN
2023 Impact Factor: 3.0
2023 SCImago Journal Rankings: 0.724
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorChoi, Clarence Edward-
dc.contributor.authorCui, Yifei-
dc.contributor.authorAu, Kelvin Yuk Kit-
dc.contributor.authorLiu, Haiming-
dc.contributor.authorWang, Jiao-
dc.contributor.authorLiu, Dingzhu-
dc.contributor.authorWang, Hao-
dc.date.accessioned2019-08-12T09:56:09Z-
dc.date.available2019-08-12T09:56:09Z-
dc.date.issued2018-
dc.identifier.citationWater (Switzerland), 2018, v. 10, n. 3, article no. 250-
dc.identifier.issn2073-4441-
dc.identifier.urihttp://hdl.handle.net/10722/273613-
dc.description.abstract© 2018 by the authors. 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.-
dc.languageeng-
dc.relation.ispartofWater (Switzerland)-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectLimit equilibrium analysis-
dc.subjectRiver-
dc.subjectDebris flow-
dc.subjectFluvial erosion-
dc.subjectPartial-debris dam-
dc.titleCase Study: Effects of a partial-debris dam on riverbank erosion in the Parlung Tsangpo River, China-
dc.typeArticle-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.3390/w10030250-
dc.identifier.scopuseid_2-s2.0-85042771206-
dc.identifier.volume10-
dc.identifier.issue3-
dc.identifier.spagearticle no. 250-
dc.identifier.epagearticle no. 250-
dc.identifier.isiWOS:000428516000015-
dc.identifier.issnl2073-4441-

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