A5084634623- Tunneling and Rock Mechanics
- Drilling and Well Engineering
- Rock Mechanics and Modeling
- Advanced materials and composites
- Advanced machining processes and optimization
- Geotechnical Engineering and Analysis
- Mineral Processing and Grinding
- Planetary Science and Exploration
- Geotechnical and Geomechanical Engineering
- Metal Alloys Wear and Properties
- Grouting, Rheology, and Soil Mechanics
- Geotechnical Engineering and Underground Structures
- Geophysical Methods and Applications
- Advanced Surface Polishing Techniques
- Geoscience and Mining Technology
- Mining Techniques and Economics
- Underground infrastructure and sustainability
- Geomechanics and Mining Engineering
- Space Exploration and Technology
- Industrial Engineering and Technologies
- Occupational Health and Safety Research
- Hydraulic Fracturing and Reservoir Analysis
- Seismology and Earthquake Studies
- Engineering and Environmental Studies
- Hydraulic and Pneumatic Systems
Colorado School of Mines
2016-2025
Mechanics' Institute
1998-2024
Pennsylvania State University
2009-2023
United States Department of Energy
2012
University of Tehran
2006
Failure characteristics of rocks under polyaxial compression have been the subject extensive laboratory testing, although a limited amount literature is published on numerical simulation rock failure such conditions. The current study was conducted by using commercially available finite-difference program, FLAC3D, to model hard strength and fracturing compression. Mogi-Coulomb criterion, where relevant parameters can be obtained from conventional triaxial tests, simulated in software for...
This study presents an application of artificial neural network (ANN) and Bayesian (BN) for evaluation jamming risk the shielded tunnel boring machines (TBMs) in adverse ground conditions such as squeezing grounds. The analysis is based on database tunneling cases by numerical modeling to evaluate convergence possibility machine entrapment. results initial were verified comparison with some case studies. A dataset was established performing additional various scenarios variation most...
In mining or construction projects, for exploitation of hard rock with high strength properties, blasting is frequently applied to breaking moving them using explosive energy. However, use explosives may lead the flyrock phenomenon. Flyrock can damage structures nearby equipment in surrounding areas and inflict harm humans, especially workers working sites. Thus, prediction importance. this investigation, examination estimation/forecast distance induced by through application five artificial...
Abstract As the use of hard rock TBMs constantly continues to grow, so are experiences gained in these projects and challenges that need new solutions. Cutterhead modeling has been a successful tool used by industry at various levels sophistications relative end use. These models based on estimation cutting forces can be for cutterhead design optimization as well performance estimates. While have proven useful areas, there is still room improving their accuracy account different features...
Nowsood water conveyance tunnel is 49 km long and has been designed for transferring 70 m3/s from Sirvan river southward to Dashte Zahab plain in the west of Iran. This divided into three sections, namely 1A, 1B 2. By April 2008, about 5.3 lot 2 this project, with a total length 26 km, were excavated by double-shield TBM. The bored section passed through different geological units main formations Zagross mountain ranges which mainly consist weak moderately strong argillaceous-carbonate...
This paper presents the development of a framework for parametric design tunnels using geographic information system (GIS) mapping and building modelling (BIM). According to framework, representation each component (e.g., layers rock mass, size excavation, topography, fault geometry, primary lining, secondary bolts, etc.) can be incorporated in GIS model with high levels detail used automatic generation numerical models tunnel construction. evaluation allows designer consider several...