Abstract
Methane hydrates which exist in both the permafrost sediments and the deep seabed ground are viewed as a new energy resource. It is, however, well known that dissociation process of gas hydrate such as methane hydrate may lead to instability such as large deformation, uncontrollable gas production etc. In the present study, a linear instability analysis was performed in order to investigate which variable has a significant effect on the onset of the instability of methane hydrate bearing geo-materials subjected to methane hydrate dissociation. Stability analysis shows that the onset of the growing instability of the material system mainly depends on the hydrate dissociation rate and the strain hardening-softening parameters. In addition, the stability depends on the wave number of the fluctuation. For larger value of the wave number of the fluctuation, the magnitude of viscoplastic parameter affects the instability, as well as the hardening-softening parameter.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Garcia E, Oka F, Kimoto S (2010) Instability analysis and simulation of water infiltration into an unsaturated elasto-viscoplastic material. Int J Solids Struct 47:3519–3536
Kim HC, Bishnoi PR, Rizvi SSH, Engineering P (1987) Kinetics of methane hydrate decomposition. Chem Eng Sci 42:1645–1653
Kimoto S, Oka F, Fushita T (2010) A chemo-thermo-mechanically coupled analysis of ground deformation induced by gas hydrate dissociation. Int J Mech Sci 52:365–376
Oka F, Adachi T, Yashima A (1995) A strain localization analysis using a viscoplastic softening model for clay. Int J Plast 11:523–545
Sultan N, Cochonat P, Foucher JP, Mienert J (2004) Effect of gas hydrates melting on seafloor slope instability. Mar Geol 213:379–401
Van Genuchten MT (1980) A closed-form equation for predicting the hydraulic conductivity of unsaturated soils. Soil Sci Soc Am J 44:892–898
Wu L, Grozic JLH, Eng P (2008) Laboratory analysis of carbon dioxide hydrate-bearing sands. J Geotech Geoenvironmental Eng 134:547–550
Waite WF, Santamarina JC, Cortes DD, Dugan B, Espinoza DN, Germaine J, Jang J, Jung JW, Kneafsey TJ, Shin H, Soga K, Winters WJ (2009) Physical properties of hydrate-bearing sediments. Rev Geophys 47:1–38
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2015 Springer International Publishing Switzerland
About this paper
Cite this paper
Kimoto, S., Iwai, H., Akaki, T., Oka, F. (2015). Instability of Dissociation Process of Methane Hydrate Bearing Soil. In: Chau, KT., Zhao, J. (eds) Bifurcation and Degradation of Geomaterials in the New Millennium. IWBDG 2014. Springer Series in Geomechanics and Geoengineering. Springer, Cham. https://doi.org/10.1007/978-3-319-13506-9_35
Download citation
DOI: https://doi.org/10.1007/978-3-319-13506-9_35
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-13505-2
Online ISBN: 978-3-319-13506-9
eBook Packages: EngineeringEngineering (R0)