Effects of material composition on deposition characteristics of runoff-generated debris flows
文献类型:期刊论文
作者 | Gong, Xing-Long1,2,3; Chen, Xiao-Qing1,2,3; Chen, Jian-Gang3; Song, Dong-Ri3 |
刊名 | LANDSLIDES |
出版日期 | 2023-08-26 |
页码 | 16 |
ISSN号 | 1612-510X |
关键词 | Debris flows Runoff-generated Deposition characteristics Material composition Flow regime |
DOI | 10.1007/s10346-023-02129-0 |
英文摘要 | The loose material in the mountain gullies is prone to form serious debris flow disasters under appropriate hydrodynamic conditions. The various compositions of these loose materials often lead to very large differences in the runout distances and the inundated areas. However, the mechanisms of the influence of material composition on the deposition characteristics of debris flow remain unclear, and studies are lacking on the influence of material composition on the deposition characteristics of runoff-generated debris flows. This study conducted experiments using different water discharges, flume slopes, and grain size distributions. The deposition processes of debris flows were observed, and their deposition patterns were explored. The effects of material composition on flow regimes, runout distances, inundated areas, and deposit geometries are revealed. The results showed that there are three types of debris flow, and their deposition patterns are different. The relationships of the Bagnold number and Friction number concerning the volume solid concentration were exponential. The mean mobility angle, a function of the upstream terrain slope, was established to assess the runout distance of debris flows with different flow regimes. Additionally, a criterion for identifying debris flow types was established by combining dimensionless runout distance and dimensionless slope. This study not only improved the observation of experimental phenomena in the deposition process of runoff-generated debris flows but also deepened the understanding of the mechanism of the influence of material composition on the deposition characteristics. |
WOS关键词 | DIMENSIONAL ANALYSIS ; EARTHQUAKE ; FIELD ; MECHANISMS ; MORPHOLOGY ; DOLOMITES |
资助项目 | National Natural Science Foundation of China[U19A2049] ; National Natural Science Foundation of China[41925030] |
WOS研究方向 | Engineering ; Geology |
语种 | 英语 |
出版者 | SPRINGER HEIDELBERG |
WOS记录号 | WOS:001059978500001 |
资助机构 | National Natural Science Foundation of China |
源URL | [http://ir.imde.ac.cn/handle/131551/57589] |
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 | Chen, Xiao-Qing |
作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.CAS HEC, China Pakistan Joint Res Ctr Earth Sci, Islamabad, Pakistan 3.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu, Peoples R China |
推荐引用方式 GB/T 7714 | Gong, Xing-Long,Chen, Xiao-Qing,Chen, Jian-Gang,et al. Effects of material composition on deposition characteristics of runoff-generated debris flows[J]. LANDSLIDES,2023:16. |
APA | Gong, Xing-Long,Chen, Xiao-Qing,Chen, Jian-Gang,&Song, Dong-Ri.(2023).Effects of material composition on deposition characteristics of runoff-generated debris flows.LANDSLIDES,16. |
MLA | Gong, Xing-Long,et al."Effects of material composition on deposition characteristics of runoff-generated debris flows".LANDSLIDES (2023):16. |
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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