| Efficiency of Slit Dam Prevention against Non-Viscous Debris Flow |
| |
| 作者姓名： | HAN Wenbing OU Guoqiang |
| |
| 作者单位： | [1]Institute of Mountain Hazards and Environment,Chinese Academy of Sciences, Chengdu 610041, Sichuan,China [2]Graduate University of Chinese Academy of Sciences,Beijing 100049, China |
| |
| 基金项目： | 国家研究发展基金;云南省自然科学基金;中国科学院知识创新工程项目 |
| |
| 摘 要： | This paper describes an experimental work in order to assess the efficiency of slit dam on non-viscous debris flow. Some results have been acquired as follows： （1） there are three kinds of blocking type; Total-blocking, opening and part-blocking. The blocking conditions of slit dam are closely link to b/dmax （the ratio of slit width to maximum diameter of solid matter）, as b/dmax is less than 0. 739, the slit dam is total- blocking; and b/dmax is more than 1. 478, the slit dam will be opening; whereas b/dma ranges from 0. 739 to 1. 478, the slit dam is part-blocking. （2） Variation of the mean density passing through slit dam is the most obvious as b/dmax ranges from 0. 739 to 1. 232. （2） According to experimental results, slit dams have been shown to be effective in reducing debris flow density while slit density ∑ b/B （B is slit dam width） ranges from 0.2 to 0. 5.
|
| 关 键 词： | 泥石流 缝隙坝 阻塞比 地质灾害 |
| 文章编号： | 1007-1202（2006）04-0865-05 |
| 收稿时间： | 2005-11-30 |
Efficiency of slit dam prevention against non-viscous debris flow |
| |
| HAN Wenbing OU Guoqiang.Efficiency of Slit Dam Prevention against Non-Viscous Debris Flow[J].Wuhan University Journal of Natural Sciences,2006,11(4):865-869. |
| |
| Authors: | Han Wenbing Ou Guoqiang |
| |
| Institution: | (1) Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, 610041 Chengdu, Sichuan, China;(2) Graduate University of Chinese Academy of Sciences, 10049 Beijing, China |
| |
| Abstract: | This paper describes an experimental work in order to assess the efficiency of slit dam on non-viscous debris flow. Some results
have been acquired as follow: ① there are three kinds of blocking type: Total-blocking, opening and part-blocking. The blocking
conditions of slit dam are closely link tob/d
max (the ratio of slit width to maximum diameter of solid matter), asb/d
max is less than 0.739, the slit dam is total-blocking; andb/d
max is more than 1.478, the slit dam will be opening; whereasb/d
max from 0.739 to 1.478, the slit dam is part-blocking. ② variation of the mean density passing through slit dam is the most
obvious asb/d
max ranges from 0.739 to 1.232. ③ According to experimental results, slit dams have been shown to be effective in reducing debris
flow density while slit density ∑b/B (B is slit dam width) ranges from 0.2 to 0.5.
Foundation item: Supported by the National Basic Research Program of China(973 Program 2003CB415202), the Natural Science Foundation of Yunnan
Province (2004D0054M) and the Knowledge Innovation Program of Chinese Academy of Sciences (KZCX3-SW-323)
Biography: HAN Wenbing (1980-), male, Ph. D. candidate, research direction: debris flow and sediment. |
| |
| Keywords: | non-viscous debris flow slit dam blocking ratio mean density passing through slit dam |
| 本文献已被 CNKI 维普 万方数据 SpringerLink 等数据库收录！ |
|
