Debris flow density determined by grain composition
文献类型：期刊论文
| 作者 | Wang, Baoliang1,2 ; Li, Yong2,3; Liu, Daochuan3,4; Liu, Jingjing3,5
|
| 刊名 | LANDSLIDES
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 15期号:6页码:1205-1213 |
| 关键词 | Debris flow Grain composition Grain size distribution Debris flow density |
| ISSN号 | 1612-510X |
| DOI | 10.1007/s10346-017-0912-x |
| 英文摘要 | Density is one of the most important parameters of debris flows. Because observing an active debris flow is very difficult, finding a method to estimate debris flow density is urgently needed for disaster mitigation engineering. This paper proposes an effective empirical equation in terms of grain size distribution (GSD) parameters based on observations in Jiangjia Gully, Yunnan Province, China. We found that the GSD follows P(D) = KD (-mu) exp(- D/Dc), with mu and Dc representing the fine and coarse grains, respectively. In particular, mu is associated with some characteristic porosity of soil in the natural state and increases with increased porosity. Dc characterizes the grain size range of the flow and increases with the grain concentration. Studies show that flow density is related to both parameters in power law. Here, we propose an empirical equation for estimating flow density: rho = 1.26 mu (-0.132) + 0.049Dc(0.443), which provides not only an estimation of the density for a flow, but also describes the variation in density with the GSD of material composition; this provides important information related to the design of debris flow engineering structures. |
| 语种 | 英语 |
| WOS记录号 | WOS:000432127000013 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://ir.imde.ac.cn/handle/131551/22998]  |
| 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 | Li, Yong |
| 作者单位 | 1.Southwest Jiaotong Univ, Sch Civil Engn, Chengdu 610031, Sichuan, Peoples R China 2.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Chengdu 610041, Sichuan, Peoples R China 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu 610065, Sichuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Baoliang,Li, Yong,Liu, Daochuan,et al. Debris flow density determined by grain composition[J]. LANDSLIDES,2018,15(6):1205-1213. |
| APA | Wang, Baoliang,Li, Yong,Liu, Daochuan,&Liu, Jingjing.(2018).Debris flow density determined by grain composition.LANDSLIDES,15(6),1205-1213. |
| MLA | Wang, Baoliang,et al."Debris flow density determined by grain composition".LANDSLIDES 15.6(2018):1205-1213. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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