Debris-flow mitigation measures and an application case in a small-scale watershed in China

doi:10.25676/11124/173125

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 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
	Chen, Jiangang; Chen, Xiaoqing; Zhao, Wanyu; You, Yong
	2019
会议日期	June 10, 2019 - June 13, 2019
会议地点	Golden, CO
关键词	Catchments Dams Deposition Disaster prevention Disasters Drainage Earthquakes Hazards Landforms Particle size Rivers Sediment transport Watersheds
DOI	10.25676/11124/173125
页码	928-935
国家	United states
英文摘要	The 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.
源文献作者	Access Limited Construction ; Association of Environmental and Engineering Geologists ; BGC Engineering Inc. ; et al. ; Geobrugg North America ; KANE Geotech Inc.
产权排序	1
会议录	Debris-Flow Hazards Mitigation: Mechanics, Monitoring, Modeling, and Assessment - Proceedings of the 7th International Conference on Debris-Flow Hazards Mitigation
语种	英语
URL标识	查看原文
ISBN号	9780578510828
内容类型	会议论文
源URL	[http://ir.imde.ac.cn/handle/131551/33779]
专题	成都山地灾害与环境研究所_山地灾害与地表过程重点实验室
通讯作者	Chen, Xiaoqing
作者单位	Key Laborator y of Mountain Hazards and Earth Surface Process, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences(CAS), Chengdu; 610041, China
推荐引用方式 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]. 见:. Golden, CO. June 10, 2019 - June 13, 2019.