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Investigation of Dry Debris Flow Impact Against a Rigid Barrier via a Discrete Element Approach

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Proceedings of GeoShanghai 2018 International Conference: Geoenvironment and Geohazard (GSIC 2018)

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Abstract

This study investigates the interaction between dry debris flows and a rigid barrier through numerical flume tests based on a discrete element method. The initial deposition material is modelled as an assembly of spherical particles, and the rigid barrier is modelled as a layer of fixed particles. The numerical model is used to investigate the effect of the flume inclination on the debris-barrier interactions. Based on the numerical results, three interaction mechanisms are identified, namely frontal impact, run up and pile up. The impact force is also detected. In addition, the energy transformation is investigated by analyzing the evolution of the kinetic energy, gravitational potential energy and the energy dissipated by the flume, barrier and inter-particle interactions.

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Author information

Authors and Affiliations

  1. State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource and Hydropower, Sichuan University, Chengdu, 610065, China

    Weigang Shen, Tao Zhao & Feng Dai

  2. Key Laboratory of Geotechnical and Underground Engineering, Tongji University, Ministry of Education, Shanghai, 200092, China

    Tao Zhao

  3. Department of Civil Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, China

    Lu Jing

Authors
  1. Weigang Shen
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  2. Tao Zhao
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  3. Feng Dai
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  4. Lu Jing
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Corresponding author

Correspondence to Tao Zhao .

Editor information

Editors and Affiliations

  1. Civil Engineering, Boise State University, Boise, Idaho, USA

    Arvin Farid

  2. Tongji University, Shanghai, China

    Hongxin Chen

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Shen, W., Zhao, T., Dai, F., Jing, L. (2018). Investigation of Dry Debris Flow Impact Against a Rigid Barrier via a Discrete Element Approach. In: Farid, A., Chen, H. (eds) Proceedings of GeoShanghai 2018 International Conference: Geoenvironment and Geohazard. GSIC 2018. Springer, Singapore. https://doi.org/10.1007/978-981-13-0128-5_3

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