IMHE OpenIR
Regulation effectiveness of a window-check dam on debris flows
Li, Shuai; You, Yong; Chen, Xiaoqing1; Liu, Jinfeng; Chen, Jiangang
Corresponding AuthorChen, Xiaoqing(xqchen@imde.ac.cn)
2019-04-10
Source PublicationENGINEERING GEOLOGY
ISSN0013-7952
Volume253Pages:205-213
AbstractWindow-check dams are widely used to regulate sediment transport in debris-flow hazard mitigation. However, the effectiveness of window-check dams on modulating debris flows is still unclear. In this study, dimensional analyses combined with physical experiments were conducted to evaluate the sediment-trapping and particle regulating functions of a window-check dam. Results showed that both of the attenuation ratio of unit weight and (the difference between upstream and downstream divided by upstream) the retention ratio of mass (upstream divided by downstream) decreased with an increase in openings area, drain holes width, and bottom slope. However, the increase in inflow unit weight of debris-flow led to larger retention ratio of mass. Besides, an optimal attention ratio corresponding to dimensionless unit weight of 1.8 was found. Also, the particle sizes sorted by the window-check dam were found to be associated with the median grain size of sediment. Furthermore, two improved expressions were obtained to assess the effectiveness of window-check dams on trapping sediments. The comparison between these expressions and laboratory data is in reasonable agreement, serving a useful reference for the optimal design of check dams.
KeywordDebris flow Window-check dam Sediment control Flume experiments Unit weight attenuation ratio Mass retention ratio
DOI10.1016/j.enggeo.2019.03.020
Indexed BySCI
WOS KeywordSEDIMENT RETENTION ; LOESS PLATEAU ; SOIL-EROSION ; CATCHMENT ; EFFICIENCY ; MURCIA ; YIELD
Language英语
Funding ProjectScience and Technology Service Network Initiative[KFJ-STS-ZDTP-015] ; National Science Foundation of China[41661144028] ; National Science Foundation of China[41772343] ; Youth Innovation Promotion Association CAS[2017426] ; China Postdoctoral Science Foundation[2016M602716]
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000467510400017
Funding OrganizationScience and Technology Service Network Initiative ; National Science Foundation of China ; Youth Innovation Promotion Association CAS ; China Postdoctoral Science Foundation
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/26149
Collection中国科学院水利部成都山地灾害与环境研究所
Corresponding AuthorChen, Xiaoqing
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
3.Minist Water Conservancy & Power, Chengdu 610041, Sichuan, Peoples R China
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
Li, Shuai,You, Yong,Chen, Xiaoqing,et al. Regulation effectiveness of a window-check dam on debris flows[J]. ENGINEERING GEOLOGY,2019,253:205-213.
APA Li, Shuai,You, Yong,Chen, Xiaoqing,Liu, Jinfeng,&Chen, Jiangang.(2019).Regulation effectiveness of a window-check dam on debris flows.ENGINEERING GEOLOGY,253,205-213.
MLA Li, Shuai,et al."Regulation effectiveness of a window-check dam on debris flows".ENGINEERING GEOLOGY 253(2019):205-213.
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