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Indexed by:期刊论文

Date of Publication:2012-12-01

Journal:JOURNAL OF COLD REGIONS ENGINEERING

Included Journals:Scopus、SCIE

Volume:26

Issue:4

Page Number:149-159

ISSN No.:0887-381X

Key Words:Ice; Methane hydrate; Stress-strain relationship; Strength; Yield criteria

Abstract:Mechanical properties and deformation behaviors of methane hydrate are important to assess the stability of gas hydrate reservoirs. In this study, using a high-pressure and low-temperature triaxial testing apparatus, the stress-strain relationship and strength of ice containing methane hydrate were studied. The results showed that the strength increased with a decrease of temperature, and the stress-strain relationship showed an elastoplastic strain-hardening behavior. When the confining pressure was less than 10 MPa, the strength increased with confining pressure. Also, it decreased with further increases of confining pressure beyond 10 MPa. DOI: 10.1061/(ASCE)CR.1943-5495.0000044. (C) 2012 American Society of Civil Engineers.