IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2016  > Vol13 No.2
Effects of spillway types on debris flow trajectory and scour behind a sabo dam
Chen Hua-yong1,2; Cui Peng1,2,3; Chen Jian-gang1,2; Tang Jin-bo1,2
Corresponding AuthorCHEN Hua-yong
AbstractDebris flows are one of the common natural hazards in mountainous areas. They often cause devastating damage to the lives and property of local people. The sabo dam construction along a debris flow valley is considered to be a useful method for hazard mitigation. Previous work has concentrated on the different types of sabo dams such as close-type sabo dam, open-type sabo dam. However, little attention has been paid to the spillway structure of sabo dam. In the paper, a new type of spillway structure with lateral contraction was proposed. Debris flow patterns under four different spillway structures were investigated. The projection theory was employed to predict trajectory of debris flow out from the spillway and to estimate the incident angle and terminal velocity before it plunged into the scour hole behind the sabo dam. The results indicated that the estimated data were in good agreement with the experimental ones. The discrepancy between the estimated and experimental values of main parameters remained below 21.82% (relative error). Additionally, the effects of debris flow scales under different spillway structures were considered to study the scour law. Although the debris flow pattern and scour law behind the sabo dam under different operating conditions was analyzed in this paper, further study on the scour mechanism and the maximum scour depth estimation based on scour theory is still required in the future.
KeywordDebris Flow Spillway Sabo Dam Flow Trajectory Velocity Scour
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS SubjectEnvironmental Sciences
WOS IDWOS:000370161700002
Funding OrganizationNational Natural Science Foundation of China(51209195) ; Foundation of Key Laboratory of Mountain Hazards and Earth Surface Process ; Chinese Academy of Sciences, Science and Technology Service Network Initiative of Chinese Academy of Sciences(KFJ-EW-STS-094) ; Youth Foundation of the Institute of Mountain Hazards and Environment, CAS(SDS-QN-1302)
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
CollectionJournal of Mountain Science_Journal of Mountain Science-2016_Vol13 No.2
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 1, Peoples R China
First 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
Chen Hua-yong,Cui Peng,Chen Jian-gang,et al. Effects of spillway types on debris flow trajectory and scour behind a sabo dam[J]. JOURNAL OF MOUNTAIN SCIENCE,2016,13(2):203-212.
APA Chen Hua-yong,Cui Peng,Chen Jian-gang,&Tang Jin-bo.(2016).Effects of spillway types on debris flow trajectory and scour behind a sabo dam.JOURNAL OF MOUNTAIN SCIENCE,13(2),203-212.
MLA Chen Hua-yong,et al."Effects of spillway types on debris flow trajectory and scour behind a sabo dam".JOURNAL OF MOUNTAIN SCIENCE 13.2(2016):203-212.
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