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A platform for research: civil engineering, architecture and urbanism
Small‐scale Laboratory Studies of Key Geotechnical Properties which Cannot be Measured from In Situ Deployed Technologies
Understanding the mechanical behavior of gas hydrate‐bearing sediments is of fundamental importance in assessing the potential for submarine slope instability as a result either of exploration or exploitation activity or of environmental change. This has motivated investigation of trends in geotechnical properties as a function of hydrate saturation, host sediment characteristics, stress and thermal conditions. Most efforts have been spent on measuring geotechnical properties of synthetic samples under laboratory‐controlled conditions before recent advances in pressure‐coring and testing techniques. The sensitivity of the small‐strain stiffness of coarse‐grained sediments to hydrate morphology, pore space saturation and effective stress also applies to their large‐strain stiffness and strength properties measured using triaxial compression tests. By testing synthetic specimens emulating field conditions, Hyodo showed that the influence of hydrate on the stiffness and peak strength tends to decrease as the sand‐to‐clay ratio decreases.
Small‐scale Laboratory Studies of Key Geotechnical Properties which Cannot be Measured from In Situ Deployed Technologies
Understanding the mechanical behavior of gas hydrate‐bearing sediments is of fundamental importance in assessing the potential for submarine slope instability as a result either of exploration or exploitation activity or of environmental change. This has motivated investigation of trends in geotechnical properties as a function of hydrate saturation, host sediment characteristics, stress and thermal conditions. Most efforts have been spent on measuring geotechnical properties of synthetic samples under laboratory‐controlled conditions before recent advances in pressure‐coring and testing techniques. The sensitivity of the small‐strain stiffness of coarse‐grained sediments to hydrate morphology, pore space saturation and effective stress also applies to their large‐strain stiffness and strength properties measured using triaxial compression tests. By testing synthetic specimens emulating field conditions, Hyodo showed that the influence of hydrate on the stiffness and peak strength tends to decrease as the sand‐to‐clay ratio decreases.
Small‐scale Laboratory Studies of Key Geotechnical Properties which Cannot be Measured from In Situ Deployed Technologies
Ruffine, Livio (editor) / Broseta, Daniel (editor) / Desmedt, Arnaud (editor)
Gas Hydrates 2 ; 165-175
2018-04-30
11 pages
Article/Chapter (Book)
Electronic Resource
English
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