A5077873907- Rock Mechanics and Modeling
- Landslides and related hazards
- Drilling and Well Engineering
- Hydraulic Fracturing and Reservoir Analysis
- Seismic Imaging and Inversion Techniques
- Geotechnical Engineering and Underground Structures
- Tunneling and Rock Mechanics
- Geotechnical and Geomechanical Engineering
- Geophysical Methods and Applications
- Geotechnical Engineering and Analysis
- Groundwater flow and contamination studies
- Seismic Waves and Analysis
- Grouting, Rheology, and Soil Mechanics
- Numerical methods in engineering
- Granular flow and fluidized beds
- earthquake and tectonic studies
- Cryospheric studies and observations
- Hydrocarbon exploration and reservoir analysis
- Soil and Unsaturated Flow
- Climate change and permafrost
- High-pressure geophysics and materials
- Reservoir Engineering and Simulation Methods
- Mineral Processing and Grinding
- Structural Behavior of Reinforced Concrete
- Dam Engineering and Safety
University of Toronto
2016-2025
Geomechanica (Canada)
2018
Laurentian University
2007
Sandia National Laboratories
2006
Imperial College London
2002-2004
École Polytechnique Fédérale de Lausanne
1999-2002
Luigi Sacco Hospital
1983
University of Milan
1983
The purpose of this paper is to present Y-Geo, a new numerical code for geomechanical applications based on the combined finite-discrete element method (FDEM). FDEM an innovative technique that combines advantages continuum-based modeling approaches and discrete methods overcome inability these capture progressive damage failure processes in rock. In particular, offers ability explicitly model transition from continuum discontinuous behavior by fracture fragmentation processes. Several...
Stress waves, known as acoustic emissions (AEs), are released by localized inelastic deformation events during the progressive failure of brittle rocks. Although several numerical models have been developed to simulate and damage processes rocks, such non-linear stress–strain behaviour localization failure, only a limited number capable providing quantitative information regarding associated seismicity. Moreover, majority these studies adopted pseudo-static approach based on elastic strain...
Conventionally, the evaluation of fracture surface roughness in brittle geomaterials, such as concrete and rock, has been based on measurement analysis two-dimensional profiles rather than three-dimensional (3D) surfaces. The primary reason for doing so was lack tools capable making 3D measurements. However, recent years, several optical mechanical have become available, which are quickly accurately producing high resolution point clouds defining This paper provides a methodology evaluating...
In this paper we quantify the influence of geometry and distribution surface roughness to directional anisotropy fluid flow transport properties a single fracture. Roughness fractures appears have first order control on how they behave mechanically hydraulically. We directly quantified fracture using high‐resolution laser scanning confocal microscopy. This was input into coupled numerical models transport. simulated colloids (microspheres) through found tailing in breakthrough sensitivity...
Abstract This study investigates the influence of microscale heterogeneity and microcracks on failure behavior mechanical response a crystalline rock. The thin section analysis for obtaining microcrack density is presented. Using micro X‐ray computed tomography (μCT) scanning failed laboratory specimens, and, in particular, biotite grains brittle fracture specimens discussed various patterns are characterized. Three groups numerical simulations presented, which demonstrate role μCT‐based...
The mechanical response of geomaterials is highly influenced by geometrical and material heterogeneity. To date, most modeling practices consider heterogeneity qualitatively their choice input parameters can be subjective. In this study, a novel approach to combine detailed micro‐scale characterization with heterogeneous presented. By conducting grid micro‐indentation micro‐scratch tests, the instrumented indentation modulus fracture toughness constituent phases crystalline rock were...
Over the past twenty years, there has been a growing interest in development of numerical models that can realistically capture progressive failure rock masses. In particular, investigation damage around underground excavations represents key issue several engineering applications, including tunnelling, mining, drilling, hydroelectric power generation, and deep geological disposal nuclear waste. The goal this paper is to show effectiveness hybrid finite-discrete element method (FDEM) code...
Hydraulic fracturing (HF) technique has been extensively used for the exploitation of unconventional oil and gas reservoirs. HF enhances connectivity less permeable gas-bearing rock formations by fluid injection, which creates an interconnected fracture network increases hydrocarbon production. Meanwhile, microseismic (MS) monitoring is one most effective approaches to evaluate such stimulation process. In this paper, combined finite-discrete element method (FDEM) adopted numerically...