Data/hora: 16/06/2024 09:27:51

Provedor de dados: | 5
País: | France
Título: | Geomechanical constitutive modelling of gas-hydrate-bearing sediments
Autores: | Sultan, Nabil; Garziglia, Sebastien.
Data: | 2011
Ano: | 2011
Resumo: | 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.
Tipo: | Text
Idioma: | Inglês
Identificador: | http://archimer.ifremer.fr/doc/00035/14626/11904.pdf
Editor: | Proceedings of the 7th International Conference on Gas Hydrates (ICGH 2011), Edinburgh, Scotland, United Kingdom, July 17-21, 2011
Relação: | http://archimer.ifremer.fr/doc/00035/14626/
Formato: | application/pdf
Fonte: | 2011 7th International Conference on Gas Hydrates