Hits:

Indexed by:期刊论文

Date of Publication:2012-12-01

Journal:INTERNATIONAL JOURNAL OF OFFSHORE AND POLAR ENGINEERING

Included Journals:Scopus、SCIE、EI

Volume:22

Issue:4

Page Number:290-296

ISSN No.:1053-5381

Key Words:Methane hydrate; mechanical properties; triaxial compression test; strength criterion

Abstract:To acquire more knowledge about the mechanical properties of gas hydrate-bearing sediments and assess the long-term stability of the strata, samples of clayey sediments containing methane hydrate were prepared and tested for their mechanical properties under various conditions by triaxial compression. The effects of temperature and confining pressure on the mechanical properties of methane hydrate-bearing sediments were analyzed. And a strength criterion considering the influence of temperature was developed for methane hydrate-bearing sediments. It agrees well with the experimental data, it and can be taken to predict the shear failure strength of methane hydrate-bearing sediments under subzero conditions.