| 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 Publication | Debris-Flow Hazards Mitigation: Mechanics, Monitoring, Modeling, and Assessment - Proceedings of the 7th International Conference on Debris-Flow Hazards Mitigation |
| Author of Source | Access Limited Construction ; Association of Environmental and Engineering Geologists ; BGC Engineering Inc. ; et al. ; Geobrugg North America ; KANE Geotech Inc. |
| Pages | 928-935 |
| meeting | 7th International Conference on Debris-Flow Hazards Mitigation: Mechanics, Monitoring, Modeling, and Assessment |
| Conference Date | June 10, 2019 - June 13, 2019 |
| Conference Place | Golden, CO |
| Country | United states |
| Contribution Rank | 1 |
| Abstract | 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. |
| Keyword | Catchments Dams Deposition Disaster prevention Disasters Drainage Earthquakes Hazards Landforms Particle size Rivers Sediment transport Watersheds |
| DOI | 10.25676/11124/173125 |
| ISBN | 9780578510828 |
| URL | 查看原文 |
| Indexed By | EI |
| Accession number | Accession number;20200408088111 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/33779 |
| Collection | 山地灾害与地表过程重点实验室 |
| Corresponding Author | Chen, Xiaoqing |
| Affiliation | Key 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 06-02_Chen.pdf（3810KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Application Full Text | ||
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