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Debris flow amplification in a moraine terrace and related engineering measures in the Zongzhai valley southeastern Tibetan plateau
Deng Mingfeng1,2; Liu Mei1,2; Zhang Yong1,2; Chen Ningsheng1; Huang Na1; Wang Tao1
2018
Source PublicationGeomatics Natural Hazards and Risk
ISSN1947-5705
EISSN1947-5713
Volume9Issue:1Pages:1230-1248
SubtypeArticle
Contribution Rank1
AbstractDebris flows can quickly destroy basic facilities in mountainous areas where suitable land resources are limited and towns are located on gentle slopes. To alleviate the threat of debris flows two main approaches based on debris storage or debris-flow excretion have been proposed in recent decades in China. In August 2015 a debris flow occurred in the Zongzhai Valley for the first time in the last 100 years. Field surveys section measurements and discharge calculations indicated that the bulking of the debris flow and the sediment entrainment were serious resulting in the widening and deepening of the channel along the moraine terrace. Therefore the two traditional mitigation methods appear to be inappropriate for the debris flows in Zongzhai Valley because this region lacks sufficient space for debris storage and economic support for a long drainage canal. This study analyzed the supply mechanism of the bed material and bank sediments along the moraine terrace and found that the bank collapse was mainly controlled by bed scour. Based on a literature review we determined that the channel bed strength in the terrace should be increased and proposed that shallow dams be constructed to maintain the stability of the channel bed. The parameters of these shallow dams are provided in this article. © 2018 The Author(s).
DOI10.1080/19475705.2018.1508507
Indexed ByEI
Language英语
EI Accession NumberAccession number:20191306714384
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/25552
Collection山地灾害与地表过程重点实验室
Corresponding AuthorWang Tao
Affiliation1.Key Laboratory of Mountain Hazards and Earth Surface Processes Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu China;
2.University of Chinese Academy of Sciences Beijing China
Recommended Citation
GB/T 7714
Deng Mingfeng,Liu Mei,Zhang Yong,et al. Debris flow amplification in a moraine terrace and related engineering measures in the Zongzhai valley southeastern Tibetan plateau[J]. Geomatics Natural Hazards and Risk,2018,9(1):1230-1248.
APA Deng Mingfeng,Liu Mei,Zhang Yong,Chen Ningsheng,Huang Na,&Wang Tao.(2018).Debris flow amplification in a moraine terrace and related engineering measures in the Zongzhai valley southeastern Tibetan plateau.Geomatics Natural Hazards and Risk,9(1),1230-1248.
MLA Deng Mingfeng,et al."Debris flow amplification in a moraine terrace and related engineering measures in the Zongzhai valley southeastern Tibetan plateau".Geomatics Natural Hazards and Risk 9.1(2018):1230-1248.
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