FN Archimer Export Format
PT C
TI Geomechanical constitutive modelling of gas-hydrate-bearing sediments
BT 
AF SULTAN, Nabil
   GARZIGLIA, Sebastien
AS 1:;2:;
FF 1:PDG-REM-GM-LES;2:PDG-REM-GM-LES;
SI BREST
SE PDG-REM-GM-LES
UR https://archimer.ifremer.fr/doc/00035/14626/11904.pdf
LA English
DT Proceedings paper
AB In this work and in order to consider theoretically the effect of gas hydrates on the mechanical properties of their host sediments, hydrate fraction was introduced as a state variable in the framework of a Critical State model. For the proposed model, the process of de-structuration and softening of natural clay was considered as a proxy for the gas-hydrate-bearing-sediments behaviour. The developed constitutive model seemed to reproduce the main key behaviours of gas-hydrate-bearing sands observed by Masui and co-authors: i) the elastic properties (Young Modulus, shear modulus) and the strength of the sediment-hydrate medium increase with the hydrate fraction ii) the mechanical softening of the gas-hydrate bearing sediment is amplified with the hydrate fraction and iii) the dilation angle increases with the hydrate fraction.
PY 2011
CT Proceedings of the 7th International Conference on Gas Hydrates (ICGH 2011), Edinburgh, Scotland, United Kingdom, July 17-21, 2011
ID 14626
ER

EF