Acta Mechanica Sinica

, Volume 28, Issue 5, pp 1356–1366 | Cite as

Experimental study on mechanical properties of methane-hydrate-bearing sediments

  • Xu-Hui Zhang
  • Xiao-Bing Lu
  • Li-Min Zhang
  • Shu-Yun Wang
  • Qing-Ping Li
Research Paper

Abstract

Mechanical properties of methane hydrate-bearing-sediments (MHBS) are basic parameters for safety analysis of hydrate exploration and exploitation. Young’s modulus, cohesion, and internal friction angle of hydrate-bearing sediments synthesized in laboratory, are investigated using tri-axial tests. Stress-strain curves and strength parameters are obtained and discussed for different compositions and different hydrate saturation, followed by empirical expressions related to the cohesion, internal friction angle, and modulus of MHBS. Almost all tested MHBS samples exhibit plastic failure. With the increase of total saturation of ice and methane hydrate (MH), the specimens’ internal friction angle decreases while the cohesion increases.

Keywords

Gas hydrate sediment Tri-axial test Cohesion Internal friction angle Elastic modulus 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics; Institute of Mechanics, Chinese Academy of Sciences and Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Xu-Hui Zhang
    • 1
  • Xiao-Bing Lu
    • 1
  • Li-Min Zhang
    • 2
  • Shu-Yun Wang
    • 1
  • Qing-Ping Li
    • 3
  1. 1.Laboratory for Hydrodynamics and Ocean Enginnering, Institute of MechanicsChinese Academy of SciencesBeijingChina
  2. 2.Department of Civil and Environmental Engineering, Hong KongUniversity of Science and TechnologyHong KongChina
  3. 3.Research CentreChina Ocean Oil Co.BeijingChina

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