IMHE OpenIR  > 山地灾害与地表过程重点实验室
Debris-flow mitigation measures and an application case in a small-scale watershed in China
Language英语
Chen, Jiangang; Chen, Xiaoqing; Zhao, Wanyu; You, Yong
2019
Source PublicationDebris-Flow Hazards Mitigation: Mechanics, Monitoring, Modeling, and Assessment - Proceedings of the 7th International Conference on Debris-Flow Hazards Mitigation
Author of SourceAccess Limited Construction ; Association of Environmental and Engineering Geologists ; BGC Engineering Inc. ; et al. ; Geobrugg North America ; KANE Geotech Inc.
Pages928-935
meeting7th International Conference on Debris-Flow Hazards Mitigation: Mechanics, Monitoring, Modeling, and Assessment
Conference DateJune 10, 2019 - June 13, 2019
Conference PlaceGolden, CO
CountryUnited states
Contribution Rank1
AbstractThe Wenchuan earthquake in China (May 12, 2008) triggered numerous debris flows, some of which caused serious secondary disasters, such as in Wenjia gully (Sichuan Province) and Sanyanyu gully (Gansu Province). To solve this problem, a planning method for debris-flow mitigation engineering measures was proposed based on watershed and river sediment transport characteristics. This method aids in the selection of engineering measures to effectively prevent secondary disasters and control unconsolidated soil and debris-flow movement from upstream to downstream. Several measures are considered in the proposed method, including check dams and transverse structures built across gullies, which are important engineering measures in debris-flow hazard mitigation. Based on the developed planning method, new types of check dams were proposed, the regulation effect of sediment particle size in slit check dams was qualitatively analyzed, and the design parameters (e.g., deposition slope, deposition length, and dam height) of the check dams were deduced. Moreover, a series of drainage channels was proposed to cross highways and discharge debris flows into the river or debris-flow deposition basin below. Finally, an engineering application case in Xiaogangjian gully, Sichuan Province, China, was examined using the proposed watershed planning method, in which a series of check dams with different orifices sizes was constructed. The engineering application results provide useful data for developing check dams as a restoration tool and hazard mitigation technology in small watersheds. © 2019 Debris-Flow Hazards Mitigation: Mechanics, Monitoring, Modeling, and Assessment - Proceedings of the 7th International Conference on Debris-Flow Hazards Mitigation. All rights reserved.
KeywordCatchments Dams Deposition Disaster prevention Disasters Drainage Earthquakes Hazards Landforms Particle size Rivers Sediment transport Watersheds
DOI10.25676/11124/173125
ISBN9780578510828
URL查看原文
Indexed ByEI
Accession numberAccession number;20200408088111
Citation statistics
Document Type会议论文
Identifierhttp://ir.imde.ac.cn/handle/131551/33779
Collection山地灾害与地表过程重点实验室
Corresponding AuthorChen, Xiaoqing
AffiliationKey Laborator y of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences(CAS), Chengdu; 610041, China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
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
Chen, Jiangang,Chen, Xiaoqing,Zhao, Wanyu,et al. Debris-flow mitigation measures and an application case in a small-scale watershed in China[C]//Access Limited Construction, Association of Environmental and Engineering Geologists, BGC Engineering Inc., et al., Geobrugg North America, KANE Geotech Inc.,2019:928-935.
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