Optimization of the Passive Regime of Artificial Freezing of a Water-Saturated Rock Mass

Abstract. The paper examines the coupled thermo-hydro-mechanical (THM) processes that develop in a fractured rock region within a fluid-saturated rock mass due to loads imposed by an advancing glacier. This scenario needs to be examined in order to assess the suitability of potential sites for the location of deep geologic repositories for the storage of high-level nuclear waste. The THM processes are examined using a computational multiphysics approach that takes into account thermo-poroelasticity of the intact geological formation and the presence of a system of sessile but hydraulically interacting fractures (fracture zones). The modelling considers coupled thermo-hydro-mechanical effects in both the intact rock and the fracture zones due to contact normal stresses and fluid pressure at the base of the advancing glacier. Computational modelling provides an assessment of the role of fractures in modifying the pore pressure generation within the entire rock mass.

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Investigation of flow in water-saturated rock fractures using nuclear magnetic resonance imaging (NMRI)

Water Resources Research ◽

10.1029/1998wr900044 ◽

1999 ◽

Vol 35 (2) ◽

pp. 347-360 ◽

Cited By ~ 59

Author(s):

Peter Dijk ◽

Brian Berkowitz ◽

Peter Bendel

Keyword(s):

Magnetic Resonance Imaging ◽

Nuclear Magnetic Resonance ◽

Magnetic Resonance ◽

Nuclear Magnetic Resonance Imaging ◽

Rock Fractures ◽

Resonance Imaging ◽

Saturated Rock ◽

Water Saturated ◽

Nuclear Magnetic

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Strength of gas-saturated rock mass around preparatory excavation

Soviet Applied Mechanics ◽

10.1007/bf00884008 ◽

1982 ◽

Vol 18 (11) ◽

pp. 982-986 ◽

Cited By ~ 1

Author(s):

R. M. Israfilov

Keyword(s):

Rock Mass ◽

Saturated Rock

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Study of Shear Constitutive Model for Schistose Rock Mass

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.838-841.800 ◽

2013 ◽

Vol 838-841 ◽

pp. 800-804

Author(s):

Shang Ge Liu ◽

Hua Xu ◽

Jian Liu ◽

Xiao Tao

Keyword(s):

Rock Mass ◽

Constitutive Model ◽

Engineering Practice ◽

Direct Shear ◽

Shear Tests ◽

Peak Displacement ◽

Direct Shear Tests ◽

Advantages And Disadvantages ◽

Piecewise Exponential ◽

Water Saturated

Based on the direct shear tests of schist and shale at dry and water-saturated states, combed with the advantages and disadvantages of models for rock mass and structure surface, we proposed shear stress-displacement constitutive model of schistose rock mass. The model is in the form of piecewise exponential function and its advantages are as follows: Piecewise function can reasonably describe the nonlinear pre-peak shear hardening and post-peak shear softening characteristics; Regard peak strength, peak displacement and residual strength as critical points, so it can accurately describe the strength characteristics of the material; The fitting degree is high with direct shear tests both at dry and water-saturated states; Only one parameter value is needed to obtain by fitting experimental curves while others are convenient to determine. All of those are benefit to applications in engineering practice.

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Thermo-hydro-mechanical processes in fractured rock formations during glacial advance

Geoscientific Model Development Discussions ◽

10.5194/gmdd-7-7351-2014 ◽

2014 ◽

Vol 7 (6) ◽

pp. 7351-7394 ◽

Cited By ~ 2

Author(s):

A. P. S. Selvadurai ◽

A. P. Suvorov ◽

P. A. Selvadurai

Keyword(s):

Rock Mass ◽

Fractured Rock ◽

Fluid Pressure ◽

Computational Modelling ◽

Fracture Zones ◽

Saturated Rock ◽

Rock Formations ◽

Geological Formation ◽

High Level Nuclear Waste ◽

High Level

Abstract. The paper examines the coupled thermo-hydro-mechanical (THM) processes that develop in a fractured rock region within a fluid-saturated rock mass due to loads imposed by an advancing glacier. This scenario needs to be examined in order to assess the suitability of potential sites for the location of deep geologic repositories for the storage of high-level nuclear waste. The THM processes are examined using a computational multiphysics approach that takes into account thermo-poroelasticity of the intact geological formation and the presence of a system of sessile but hydraulically interacting fractures (fracture zones). The modeling considers coupled thermo-hydro-mechanical effects in both the intact rock and the fracture zones due to contact normal stresses and fluid pressure at the base of the advancing glacier. Computational modelling provides an assessment of the role of fractures that can modify the pore pressure generation within the entire rock mass.

Download Full-text