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Numerical analysis of submarine landslides using a smoothed particle hydrodynamics depth integral model

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Abstract

Submarine landslides can cause severe damage to marine engineering structures. Their sliding velocity and runout distance are two major parameters for quantifying and analyzing the risk of submarine landslides. Currently, commercial calculation programs such as BING have limitations in simulating underwater soil movements. All of these processes can be consistently simulated through a smoothed particle hydrodynamics (SPH) depth integrated model. The basis of the model is a control equation that was developed to take into account the effects of soil consolidation and erosion. In this work, the frictional rheological mode has been used to perform a simulation study of submarine landslides. Time-history curves of the sliding body’s velocity, height, and length under various conditions of water depth, slope gradient, contact friction coefficient, and erosion rate are compared; the maximum sliding distance and velocity are calculated; and patterns of variation are discussed. The findings of this study can provide a reference for disaster warnings and pipeline route selection.

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Authors and Affiliations

  1. State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian, 116024, China

    Zhongtao Wang, Peng Liu & Yanqi Tao

  2. General Research Institute of China National Offshore Oil Corporation, Beijing, 100010, China

    Xinzhong Li

Authors
  1. Zhongtao Wang
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  2. Xinzhong Li
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  3. Peng Liu
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  4. Yanqi Tao
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Corresponding author

Correspondence to Peng Liu.

Additional information

Foundation item: The Specialized Research Fund for the Doctoral Program of Higher Education under contract No. 20120041130002; the National Key Project of Science and Technology under contract No. 2011ZX 05056-001-02; the Fundamental Research Funds for the Central Universities under contract No. DUT14ZD220.

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Wang, Z., Li, X., Liu, P. et al. Numerical analysis of submarine landslides using a smoothed particle hydrodynamics depth integral model. Acta Oceanol. Sin. 35, 134–140 (2016). https://doi.org/10.1007/s13131-016-0864-3

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  • DOI: https://doi.org/10.1007/s13131-016-0864-3

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