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Article
A study of caprock hydromechanical changes associated with CO2-injection into a brine formation
A numerical study of hydromechanical changes during a deep underground injection of supercritical CO2 in a hypothetical brine aquifer/caprock system is conducted. The injection process is simulated using a newly ...
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Article
The role of hydromechanical coupling in fractured rock engineering
This paper provides a review of hydromechanical (HM) couplings in fractured rock, with special emphasis on HM interactions as a result of, or directly connected with human activities. In the early 1960s, the c...
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Article
A comparative review of hydrologic issues involved in geologic storage of CO2 and injection disposal of liquid waste
The paper presents a comparison of hydrologic issues and technical approaches used in deep-well injection and disposal of liquid wastes, and those issues and approaches associated with injection and storage of CO
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Article
Model development and calibration for the coupled thermal, hydraulic and mechanical phenomena of the bentonite
In the international DECOVALEX-THMC project, five research teams study the influence of thermal-hydro-mechanical (THM) coupling on the safety of a hypothetical geological repository for spent fuel. In order to...
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Article
A comparative simulation study of coupled THM processes and their effect on fractured rock permeability around nuclear waste repositories
This paper presents an international, multiple-code, simulation study of coupled thermal, hydrological, and mechanical (THM) processes and their effect on permeability and fluid flow in fractured rock around h...
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Article
A case study on the influence of THM coupling on the near field safety of a spent fuel repository in sparsely fractured granite
In order to demonstrate the feasibility of geological disposal of spent CANDU fuel in Canada, a safety assessment was performed for a hypothetical repository in the Canadian Shield. The assessment shows that t...
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Article
A multiple-code simulation study of the long-term EDZ evolution of geological nuclear waste repositories
This simulation study shows how widely different model approaches can be adapted to model the evolution of the excavation disturbed zone (EDZ) around a heated nuclear waste emplacement drift in fractured rock....
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Article
Modeling of damage, permeability changes and pressure responses during excavation of the TSX tunnel in granitic rock at URL, Canada
This paper presents numerical modeling of excavation-induced damage, permeability changes, and fluid-pressure responses during excavation of a test tunnel associated with the tunnel sealing experiment (TSX) at...
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Article
Open AccessA New Coal-Permeability Model: Internal Swelling Stress and Fracture–Matrix Interaction
We have developed a new coal-permeability model for uniaxial strain and constant confining-stress conditions. The model is unique in that it explicitly considers fracture–matrix interaction during coal-deforma...
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Article
Non-isothermal flow in low permeable porous media: a comparison of Richards’ and two-phase flow approaches
The present work compares the performance of two alternative flow models for the simulation of thermal-hydraulic coupled processes in low permeable porous media: non-isothermal Richards’ and two-phase flow con...
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Article
Open AccessThe Geomechanics of CO2 Storage in Deep Sedimentary Formations
This paper provides a review of the geomechanics and modeling of geomechanics associated with geologic carbon storage (GCS), focusing on storage in deep sedimentary formations, in particular saline aquifers. T...
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Chapter
Gas Hydrates as a Potential Energy Source: State of Knowledge and Challenges
Gas hydrates are a vast energy resource with global distribution in the permafrost and in the oceans, and its sheer size demands evaluation as a potential energy source. Here we discuss the distribution of nat...
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Article
Normal-stress dependence of fracture hydraulic properties including two-phase flow properties
A systematic approach has been developed for determining relationships between normal stress and fracture hydraulic properties, including two-phase flow properties. The development of a relationship between st...
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Article
Probabilistic Analysis of Fracture Reactivation Associated with Deep Underground CO2 Injection
In the context of carbon capture and storage, deep underground injection of CO2 induces the geomechanical changes within and around the injection zone and their impact on CO2 storage security should be evaluated....
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Article
Characterizing Excavation Damaged Zone and Stability of Pressurized Lined Rock Caverns for Underground Compressed Air Energy Storage
In this paper, we investigate the influence of the excavation damaged zone (EDZ) on the geomechanical performance of compressed air energy storage (CAES) in lined rock caverns. We conducted a detailed characte...
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Article
Coupled Hydro-mechanical Processes Associated with Multiphase Flow in a Dual-continuum System: Formulations and an Application
Fractured rock has often been conceptualized as a dual-continuum system for many practical applications. This study proposes a systematic approach to deal with multiphase flow in a dual-continuum system. Consi...
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Article
Non-uniqueness of Beltrami–Schaefer Stress Functions
Beltrami and Schaefer derived solutions for the equilibrium equations of an elastic objective free of body force, and Gurtin proved that the solutions are complete, i.e., proved that Beltrami–Schaefer stress f...
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Article
ISRM Suggested Method for Step-Rate Injection Method for Fracture In-Situ Properties (SIMFIP): Using a 3-Components Borehole Deformation Sensor
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Article
Open AccessModeling of Coupled Thermo-Hydro-Mechanical Processes with Links to Geochemistry Associated with Bentonite-Backfilled Repository Tunnels in Clay Formations
This paper presents simulation results related to coupled thermal–hydraulic–mechanical (THM) processes in engineered barrier systems (EBS) and clay host rock, in one case considering a possible link to geochem...
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Article
An Approach for Modeling Rock Discontinuous Mechanical Behavior Under Multiphase Fluid Flow Conditions
In this paper, the two computer codes TOUGH2 and RDCA (for “rock discontinuous cellular automaton”) are integrated for coupled hydromechanical analysis of multiphase fluid flow and discontinuous mechanical beh...
