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Environmental Earth Sciences

, 76:172 | Cite as

Numerical simulation on the marine landslide due to gas hydrate dissociation

  • X. B. LuEmail author
  • X. D. Chen
  • L. Lu
  • X. H. Zhang
Original Article

Abstract

Marine landslide due to gas hydrate dissociation is a kind of potential heavy hazards. Numerical simulation was processed to investigate the deformation, landslide and effects of main factors on the critical scale of dissociation zone to induce marine landslides during/after dissociation of gas hydrate. A simple method for analyzing the critical scale was presented based on the limit equilibrium method. It is shown that the maximum settlement is located near the upper side of the dissociation zone. The soil near the lower side of the dissociation zone uplifts. There is a critical scale of dissociation zone over which landslide will occur under given conditions. Expansion modes of the dissociation zone have obvious effects on the critical scale.

Keywords

Gas hydrate Dissociation zone Marine landslide 

Notes

Acknowledgements

This paper is supported by The National Natural Science Foundation of China (Nos. 51239010, 11272314) and Project of CAS-CNPC Strategic Alliance.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  1. 1.Institute of MechanicsChinese Academy of SciencesBeijingChina
  2. 2.Department of Engineering SciencesUniversity of Chinese Academy of SciencesBeijingChina
  3. 3.School of ScienceChina University of Mining and TechnologyBeijingChina

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