Formation conditions of outburst debris flow triggered by overtopped natural dam failure | |
Jiang Xiangang![]() ![]() ![]() | |
刊名 | Landslides
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2016-09 | |
页码 | DOI 10.1007/s10346-016-0751-1 |
关键词 | Natural dam Debris flow Overtopping Critical condition |
ISSN号 | 1612-510X |
通讯作者 | Cui Peng |
英文摘要 | Natural dams formed by landslides may produce disastrous debris flows after dam outburst. However, studies on the critical conditions required for the formation of outburst debris flow resulting from natural dam failure are still at an early stage. In this paper, we present the results of a series of laboratory tests that assessed three different materials, five different flume bed slope angles (2°, 7°, 9°, 10°, and 13°), two in-flow rates, and four types of dam geometric shapes. The results showed that the unit weight of downstream fluid increased with increasing bed channel slope. Additionally, a critical flume bed angle was found for debris flow formation. Furthermore, the combination of lake volume and flume bed angle was found to influence the formation of debris flow. A nonlinear trend was observed between the unit weights of debris flow and the uniformity coefficients of solid material. Based on the theory of stream power, a critical condition for debris flow formation from natural dam failure was established. Based on two case studies, the results indicate that the condition that was established for debris flow formation following natural dam failure agrees well with reality. |
学科主题 | 地理学 ; 水文学 ; 水利工程 |
收录类别 | SCI |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/17987] ![]() |
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 |
推荐引用方式 GB/T 7714 | Jiang Xiangang,Cui Peng,Chen Huayong,et al. Formation conditions of outburst debris flow triggered by overtopped natural dam failure[J]. Landslides,2016:DOI 10.1007/s10346-016-0751-1. |
APA | Jiang Xiangang,Cui Peng,Chen Huayong,&Guo Yayong.(2016).Formation conditions of outburst debris flow triggered by overtopped natural dam failure.Landslides,DOI 10.1007/s10346-016-0751-1. |
MLA | Jiang Xiangang,et al."Formation conditions of outburst debris flow triggered by overtopped natural dam failure".Landslides (2016):DOI 10.1007/s10346-016-0751-1. |
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