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Experimental Investigation and Numerical Modeling of Coupled Elastoplastic Damage and Permeability of Saturated Hard Rock
https://orcid.org/0000-0001-6835-6853
Abstract The mechanical behavior and permeability evolution of saturated hard rock are significantly important to the stability and safety of super-high arch dams. A series of triaxial compression tests were conducted on amygdaloidal basalt under different pore pressures. Based on the experimental results, a micromechanical-based elastoplastic damage model is proposed for such saturated hard rock. The hydromechanical coupling is formulated using the thermodynamic framework for saturated media. Damage is induced by the growth of microcracks and the plastic deformation is related to the frictional sliding between rough crack surfaces. The thermodynamic forces associated with damage and plasticity are deduced with a special thermodynamic potential for saturated hard rocks. New plastic and damage criteria are proposed to describe the evolutions of the internal variables. The permeability evolution is estimated by the volumetric averaging of the local permeability in microcracks. The developed models were calibrated and validated by a series of triaxial compression tests on saturated hard rocks. The main mechanical behaviors and permeability evolution properties of saturated hard rock are well captured by the proposed model.
Experimental Investigation and Numerical Modeling of Coupled Elastoplastic Damage and Permeability of Saturated Hard Rock
https://orcid.org/0000-0001-6835-6853
Abstract The mechanical behavior and permeability evolution of saturated hard rock are significantly important to the stability and safety of super-high arch dams. A series of triaxial compression tests were conducted on amygdaloidal basalt under different pore pressures. Based on the experimental results, a micromechanical-based elastoplastic damage model is proposed for such saturated hard rock. The hydromechanical coupling is formulated using the thermodynamic framework for saturated media. Damage is induced by the growth of microcracks and the plastic deformation is related to the frictional sliding between rough crack surfaces. The thermodynamic forces associated with damage and plasticity are deduced with a special thermodynamic potential for saturated hard rocks. New plastic and damage criteria are proposed to describe the evolutions of the internal variables. The permeability evolution is estimated by the volumetric averaging of the local permeability in microcracks. The developed models were calibrated and validated by a series of triaxial compression tests on saturated hard rocks. The main mechanical behaviors and permeability evolution properties of saturated hard rock are well captured by the proposed model.
Experimental Investigation and Numerical Modeling of Coupled Elastoplastic Damage and Permeability of Saturated Hard Rock
https://orcid.org/0000-0001-6835-6853
Abstract The mechanical behavior and permeability evolution of saturated hard rock are significantly important to the stability and safety of super-high arch dams. A series of triaxial compression tests were conducted on amygdaloidal basalt under different pore pressures. Based on the experimental results, a micromechanical-based elastoplastic damage model is proposed for such saturated hard rock. The hydromechanical coupling is formulated using the thermodynamic framework for saturated media. Damage is induced by the growth of microcracks and the plastic deformation is related to the frictional sliding between rough crack surfaces. The thermodynamic forces associated with damage and plasticity are deduced with a special thermodynamic potential for saturated hard rocks. New plastic and damage criteria are proposed to describe the evolutions of the internal variables. The permeability evolution is estimated by the volumetric averaging of the local permeability in microcracks. The developed models were calibrated and validated by a series of triaxial compression tests on saturated hard rocks. The main mechanical behaviors and permeability evolution properties of saturated hard rock are well captured by the proposed model.
Experimental Investigation and Numerical Modeling of Coupled Elastoplastic Damage and Permeability of Saturated Hard Rock
Jia, Chaojun (author) / Zhang, Sheng (author) / Xu, Weiya (author)
2021
Article (Journal)
Electronic Resource
English
BKL:
38.58
Geomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
38.58$jGeomechanik
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB41
Coupled elastoplastic damage modeling of anisotropic rocks
| Elsevier | 2009
Coupled elastoplastic damage modeling of anisotropic rocks
| Online Contents | 2010
| British Library Online Contents | 2018