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Energy Dissipation of Debris Flow through Pile Group Obstructions
Minglong Fei1; Qicheng Sun1; Deyu Zhong1; Gordon G. D. Zhou2,3
Source PublicationPOWDERS AND GRAINS 2013 (AIP Conference Proceedings Vol. 1542)
Author of SourceYu A ; Dong K ; Yang R ; Luding S
meeting7th International Conference on Micromechanics of Granular Media (Powders and Grains)
Conference DateJUL 08-12, 2013
Conference PlaceSydney
Contribution Rank2
AbstractSince the devastating Sichuan Earthquake on May 12, 2008, large-scale landslides and debris flows are predicted to occur in these populous areas over the next 10-30 years. In order to prevent and mitigate the geological disasters, it is of great importance to better understand the mechanism of granular flows and to predict their temporal and spatial scales in an efficient way. In this work, we develop a Roe-type finite volume model of the Savage-Hutter equations. Unstructured grid of either triangular or quadrilateral cells is used to match natural topography wells. After appropriately selecting bed and internal friction coefficients, we conduct a series of numerical flume experiments to simulate debris flow passing through pile group obstruction, which is commonly used in damping the kinetic energy of debris flows. Pile group of different spatial patterns are decorated in the downstream of the flume, and the influences of the spatial distributions of pile group obstruction to their damping effect are investigated.
KeywordFinite volume method Roe's approximate Riemann solver granular flow Pile group Spatial pattern
Indexed ByCPCI
WOS IDWOS:000321003200311
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
Corresponding AuthorMinglong Fei
Affiliation1.State Key Laboratory for Hydroscience and Engineering, Tsinghua University, Beijing, China;
2.Key Laboratory of Mountain Hazards and Earth Surface Processes, Chinese Academy of Sciences, Chengdu, China;
3.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, China
Recommended Citation
GB/T 7714
Minglong Fei,Qicheng Sun,Deyu Zhong,et al. Energy Dissipation of Debris Flow through Pile Group Obstructions[C]//Yu A, Dong K, Yang R, Luding S:AMER INST PHYSICS,2013:1262-1265.
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