Compressive strength and density of methane hydrate

Yasuyuki Nabeshima, Yusuke Takai, Takeshi Komai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

20 Citations (Scopus)

Abstract

The methane hydrate is considered as an encouraging new energy resource because of its huge amount of reserves. Especially, it would be available under the ocean floors in the Pacific Ocean around Japan Islands. However, the reckless mining development might cause serious disasters such as sliding or mass movement of seabed. To prevent such disasters due to the methane hydrate mining development, it is necessary to understand its mechanical properties from the geotechnical viewpoint. In this paper, the relationship between compressive strength and density of methane hydrate is discussed. Based on the triaxial compression test results under low temperature and high pressure, static shear behaviors of methane hydrate and ice are compared. Compressive strength of methane hydrate increases as decreasing temperature or increasing pressure and it also increases as increasing density of methane hydrate specimen. Compressive strength of ice also increases as decreasing temperature or increasing pressure at low density, however, it rarely increases at high density. Through the above discussion, the void condition of methane hydrate is supposed to be different from that of ice at the same density.

Original languageEnglish
Title of host publicationProceedings of the Sixth 2005 International Society of Offshore and Polar Engineers, Ocean Mining Symposium, ISOPE OMS-2005
Pages199-202
Number of pages4
Volume2005
Publication statusPublished - 2005 Dec 1
Externally publishedYes
Event6th 2005 International Society of Offshore and Polar Engineers, Ocean Mining Symposium, ISOPE OMS-2005 - Changsha, Hunan, China
Duration: 2005 Oct 92005 Oct 13

Other

Other6th 2005 International Society of Offshore and Polar Engineers, Ocean Mining Symposium, ISOPE OMS-2005
CountryChina
CityChangsha, Hunan
Period05/10/905/10/13

Keywords

  • Compressive strength
  • Cryology
  • Density
  • Ice
  • Methane hydrate

ASJC Scopus subject areas

  • Engineering(all)
  • Geotechnical Engineering and Engineering Geology
  • Ocean Engineering

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