Experimental study on the energy dissipation characteristics of debris flow deceleration baffles | |
Wang Fei1,3; Chen Xiao-qing1,2; Chen Jian-gang1 | |
刊名 | JOURNAL OF MOUNTAIN SCIENCE |
2017-10-01 | |
卷号 | 14期号:10页码:1951-1960 |
关键词 | Debris Flow Drainage Channel Baffles Energy Dissipation Flow Density |
ISSN号 | 1672-6316 |
DOI | 10.1007/s11629-016-3868-8 |
通讯作者 | CHEN Xiao-qing |
文献子类 | Article |
英文摘要 | Debris flow can cause serious damages to roads, bridges, buildings and other infrastructures. Arranging several rows of deceleration baffles in the flow path can reduce the flow velocity and ensure better protection of life and property. In debris flow prevention projects, deceleration baffles can effectively reduce the erosion of the debris flow and prolong the running time of the drainage channel. This study investigated the degree to which a 6 m long flume and three rows of deceleration baffles reduce the debris flow velocity and affect the energy dissipation characteristics. The influential variables include channel slope, debris flow density, and spacing between baffle rows. The experimental results demonstrated that the typical flow pattern was a sudden increase in flow depth and vertical proliferation when debris flow flows through the baffles. Strong turbulence between debris flow and baffles can contribute to energy dissipation and decrease the kinematic velocity considerably. The results showed that the reduction ratio of velocity increased with the increase in debris flow density, channel slope and spacing between rows. Tests phenomena also indicated that debris flow density has significant influence on the mobility and deposition characteristic of debris flow. The deposit amount first increased then decreased when the flow density rises, and the deposit amount of debris flow density of 1500 kg/m(3) reached the maximum when the experimental flume slope is 12 degrees. |
WOS关键词 | DRAINAGE CHANNEL ; IMPEDANCE ; CHINA |
语种 | 英语 |
WOS记录号 | WOS:000412313000004 |
资助机构 | National Key Technology Research and Development Program of China(2014BAL05B01) ; Science and Technology Service Network Initiative of Chinese Academy of Sciences(KFJ-EW-STS-094) ; National Science Foundation of China(41302283) ; West Light Foundation of Chinese Academy of Sciences |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/19089] |
专题 | Journal of Mountain Science _Journal of Mountain Science-2017_Vol14 No.10 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 |
作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China 2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 3.Northwest Univ, State Key Lab Continental Dynam, Dept Geol, Xian 710069, Shaanxi, Peoples R China |
推荐引用方式 GB/T 7714 | Wang Fei,Chen Xiao-qing,Chen Jian-gang. Experimental study on the energy dissipation characteristics of debris flow deceleration baffles[J]. JOURNAL OF MOUNTAIN SCIENCE,2017,14(10):1951-1960. |
APA | Wang Fei,Chen Xiao-qing,&Chen Jian-gang.(2017).Experimental study on the energy dissipation characteristics of debris flow deceleration baffles.JOURNAL OF MOUNTAIN SCIENCE,14(10),1951-1960. |
MLA | Wang Fei,et al."Experimental study on the energy dissipation characteristics of debris flow deceleration baffles".JOURNAL OF MOUNTAIN SCIENCE 14.10(2017):1951-1960. |
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