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Determination of optimal grid opening width for herringbone water-sediment separation structures based on sediment separation efficiency
Xie Xiang-ping1; Wei Fang-qiang2; Wang Xiao-jun1; Yang Hong-juan3
Corresponding AuthorWei Fang-qiang(fqwei@cigit.ac.cn)
2019-03-01
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume16Issue:3Pages:619-629
AbstractThe herringbone water-sediment separation structure (HWSSS) was developed to prevent debris flows. This paper mainly focuses on evaluating the sediment separation efficiency of HWSSS in debris flow prevention and determining the grid opening width D, a crucial structure parameter for HWSSS design. Theoretical analysis on the total sediment separation rate P-t reveals that the efficiency of sediment separation is much related with sediment grain size distribution (GSD) and grid opening width. The lower limit of Pt is deduced from the perspective of safety consideration by transforming debris flow into sediment-laden flow. Hydraulic model tests were carried out. Based on the regression analysis of the experimental data, the quantitative relationships between Pt and D and GSD characteristic values were finally established. A procedure for determining optimal grid opening width is proposed based on these analyses. These results are of significance in evaluating sediment separation effect by HWSSS in debris flow prevention and contribute to a more explicit methodology for design of HWSSS.
KeywordDebris flow Water-sediment separation Structure design Sediment separation efficiency Grid opening width
DOI10.1007/s11629-018-5038-7
Indexed BySCI
Language英语
Funding ProjectNational Science and Technology Support Program[2011BAK12B00]
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000460754100010
Funding OrganizationNational Science and Technology Support Program
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/25308
Collection山地灾害与地表过程重点实验室
Corresponding AuthorWei Fang-qiang
Affiliation1.Anyang Inst Technol, Anyang 455000, Peoples R China
2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China
3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
Recommended Citation
GB/T 7714
Xie Xiang-ping,Wei Fang-qiang,Wang Xiao-jun,et al. Determination of optimal grid opening width for herringbone water-sediment separation structures based on sediment separation efficiency[J]. JOURNAL OF MOUNTAIN SCIENCE,2019,16(3):619-629.
APA Xie Xiang-ping,Wei Fang-qiang,Wang Xiao-jun,&Yang Hong-juan.(2019).Determination of optimal grid opening width for herringbone water-sediment separation structures based on sediment separation efficiency.JOURNAL OF MOUNTAIN SCIENCE,16(3),619-629.
MLA Xie Xiang-ping,et al."Determination of optimal grid opening width for herringbone water-sediment separation structures based on sediment separation efficiency".JOURNAL OF MOUNTAIN SCIENCE 16.3(2019):619-629.
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