Journal
JOURNAL OF COLD REGIONS ENGINEERING
Volume 26, Issue 4, Pages 149-159Publisher
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)CR.1943-5495.0000044
Keywords
Ice; Methane hydrate; Stress-strain relationship; Strength; Yield criteria
Funding
- National Science and Technology Major Project, China [2011ZX05026-04]
- National High Technology Research and Development Program of China [2006AA09209-5]
- Key Program of National Natural Science Foundation of China [50736001]
- Ministry of Education [20100041120037]
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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.
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