Titre :

Experimental and numerical investigations on hydro-mechanical properties of saturated fine-grained sandstone

Auteur(s) :

Wang, Susheng [Auteur]
Xu, Weiya [Auteur]
Hohai University
Laboratoire de Mécanique, Multiphysique, Multiéchelle - UMR 9013 [LaMcube]
Wang, Wei [Auteur]
Hohai University
Laboratoire de Mécanique, Multiphysique, Multiéchelle - UMR 9013 [LaMcube]

Titre de la revue :

International Journal of Rock Mechanics and Mining Sciences

Numéro :

127

Pagination :

104222

Éditeur :

Pergamon and Elsevier

Date de publication :

2020-03

ISSN :

1365-1609

Mot(s)-clé(s) en anglais :

Fine-grained sandstone
Triaxial compression test
Hydro-mechanical properties
Coupled elastoplastic damage model

Discipline(s) HAL :

Sciences de l'ingénieur [physics]

Résumé en anglais : [en]

In order to investigate hydro-mechanical properties of fine-grained sandstone in Xiangjiaba hydropower station in China, a series of triaxial compression tests of saturated fine-grained sandstone were conducted. Two groups ...
Lire la suite >In order to investigate hydro-mechanical properties of fine-grained sandstone in Xiangjiaba hydropower station in China, a series of triaxial compression tests of saturated fine-grained sandstone were conducted. Two groups of hydro-mechanical triaxial compression tests of saturated sandstone are conducted: firstly, confining pressure is constant at 10 MPa while pore pressure is varied from 4, 6, and 8 MPa; secondly, pore pressure is constant at 6 MPa while confining pressure is varied from 10, 15, and 20 MPa. The effects of the confining and pore pressures on strength and deformation behaviors of saturated fine-grained sandstone are discussed. Based on the test results, a novel coupled elastoplastic damage model is proposed to considering hydro-mechanical coupling properties of saturated fine-grained sandstone using the effective stress concept. Furthermore, the numerical formulations of a return mapping algorithm for the coupled model implementation are introduced in detail. Finally, the validity and efficiency of the model are compared between numerical simulation and test results. Therefore, the coupled model is effectively applied in the stability analysis of practical engineering.Lire moins >

Langue :

Anglais

Comité de lecture :

Oui

Audience :

Internationale

Vulgarisation :

Non

Collections :

• Laboratoire de Mécanique, Multi-physique, Multi-échelle (LaMcube) - UMR 9013

Date de dépôt :

2021-12-08T09:52:37Z
2025-04-01T10:45:11Z