Geological Science and Engineering

Geological Sciences and Geological Engineering
Geological Sciences and Geological Engineering

Nicholas Vlachopoulos, PhD, CD, PEng, PE

Associate Professor

Office: S2305, Royal Military College of Canada
Phone: (613) 541-6000 ext 6398
Fax: (613) 541-6218
Email: vlachopoulos-n@rmc.ca 
Website: http://www.nicholasvlachopoulos.ca/ 

Dr. Nicholas Vlachopoulos joined Queen’s University and the Department of Geological Sciences and Geological Engineering in 2010 as a cross-appointment in conjunction with his faculty position as an Associate Professor of Civil Engineering at the Royal Military College of Canada. Dr. Vlachopoulos brings with him a wealth of engineering experience gained from independent consulting as well as 20 years of distinguished service to Canada as a Senior Officer within the Canadian Military Engineer Corps (in multiple capacities). His research interests include topics in Geotechnical, Geomechanical and Environmental Engineering. He uses physical testing and/or field scale observation combined with analytical techniques in order to improve the state of the art. The Geotechnical Group at RMC as well as the Geomechanics Group at Queen’s University is part of the GeoEngineering Centre at Queen's-RMC with students and researchers from Engineering Programs at both Queen's and RMC working with Dr. Vlachopoulos. Students have the option of registering in MSc or PhD programs at Queen's or RMC. In addition to his Professional Engineering License in Ontario, he also holds a Professional Engineering License in the European Union

Awards

2019     Thomas Roy Award, Canadian Geotechnical Society, for “outstanding contribution to Engineering Geology in Canada”. Premier Engineering Geology Award in Canada. Click here: VIDEO

2018     Recipient of Commandant’s coin (#139) for contributions to Excellence in Teaching at the Royal Military College of Canada

2018     Winner of Prestigious RMC Class of 1965 Teaching Excellence Award

2018     Co-Author awarded Best Paper / Presentation at Annual Canadian Society of Civil Engineering (CSCE) Conference, Moncton, NB. Supervised graduate student Henry Helmer-Smith.

2018     Supervised Bradley Forbes as 1st prize winner of the National Graduate Student Competition for the Canadian Geotechnical Society. Deemed best research and research presentation from all other universities in Canada.

2017     Supervised Daniel Cruz as 1st prize winner of Michael Bozozuk presentation competition between graduate students from RMC, Queen’s, Carleton and Ottawa Universities

2015     Awarded Best Overall Presentation at EUROCK International Conference, co-author of paper

2015     Winner of best GeoEngineering Presentation - Advances in Earth Science Research Conference: AESRC 2015, Kingston, ON.

Service Award – Professional Engineers of Ontario

Department of National Defence (DND) Deputy Minister / Chief of Defence Staff Innovation Award for outstanding service and value added to DND in Environmental Issues

R.M. Quigley Award, Canadian Geotechnical Society for best paper published in the

Canadian Geotechnical Journal for 2006

Supervising Information

Current Graduate Students (12)

PhD (7)

2019-    Mr. Driss Bayane. Energy Requirements and Alternative Sources of Energy for the Canadian Army

2018-    Mr. Yiannis Farmakis. Investigation into Rock Stability Characterization and Modelling associated with Geo-Hazards (Landslides).

2018-    Ms. Ya Su. Numerical Analysis techniques associated with optimization of support within Tunnelling in Weak Ground (co-supervised, visiting student China)

2017-    2 Lt Henry Helmer-Schmidt, Monitoring and Performance of heritage Warren Truss Structures within Canadian Forces Air Hangar.

2017-    Capt Scott Fraser. Rapid UAS Based Photogrammetric Assessment of Infrastructure in Disaster Areas and Conflict Zones (co-supervisor)

2017-    Ms. Maame Addai. Area-Wide Optimization of Water and Wastewater Treatment Plants with a focus on Sludge Lagoons.

2015-    Mr. Brad Forbes. Monitoring the Performance of Support Elements using Fiber Optic Technology.

Master’s Degree (5)

2019-    Capt Kieran Moore. Optimization of rock bolt and ground support installation utilizing fiber optics.

2019-    Capt Richard Leblanc. Investigation into monitoring the behaviour and performance of Small Arms Range Back-Stops with a view to improved design.

2019-    Ms. Elizabeth Arif. The reduction of Green House Gases through optimized energy usage by buildings and area infrastructure.

2018-    Capt Tyler O’Connor. The performance of ground support utilizing fiber optics.

2018-    Mr. Sean Hegger. Fiber Optical Sensing for Uniaxial, Shear, and Triaxial Strain measurement. (co-supervisor)

Past Graduate Students (15)

PhD Degree (3)

2013-2018    Mr. Ioannis Vazaios. Probabilistic Approach to Geotechnical Risk for Tunnelling Projects. Graduating 2018.

2010-2016    Mr. Jeffery Oke, Optimization of Temporary Support Structures Relating to Weak Rock Masses.

2010-2013    Mr. Connor Langford, Probabilistic Approach to Geotechnical Risk for Tunnelling Projects. Co-Supervisor.

Master’s Degree (12)

2017-2019    Capt Jean-Luc Armstrong. Assessment and Design of Sludge Lagoon at a Canadian Armed Forces location in Western Canada.

2016-2019    Colonel Marc Rancourt, Investigation into Optimization of Real Property Management within the Department of National Defence. Masters of Defence Studies.

2016-2017    LCol Chad Rizzato, Investigation into Optimization of Real Property Management within the Department of National Defence. Masters of Defence Studies. NC

2015-2017    Second Lieutenant Daniel Cruz, Physical Testing of Support Elements using Distributed Fiber Optics Techniques

2014-2017    Captain Stephen Holt. Physical Testing of Ground Support Elements in order to determine interaction parameters.

2014-2016    Maj. Peter Glaicar. Optimizing Infrastructure Contracts within the CF. Masters of Defence Studies. NC.

2013-2015    Mr. Brad Forbes. Monitoring the Performance of Support Elements using Fiber Optic Technology.

2013-2015    LCol Rob Knapik. Investigation into the technical training of Military Engineers within the Canadian Forces (Masters of Defence Studies). NC.

2012-2015    Ms. Jad Robitaille. Performance of Systems within Green Buildings; Investigation into passive technologies and building envelope.

2010-2014    Mr. David Thebault, Monitoring and Quantification of Energy Savings associated with Green Building Technologies – LEED focused.

2010-2013    Ms. Tina Basso, An Investigation into Sustainable Building Evaluation Strategies for use within the Canadian Forces and the Department of National Defence.

2011-2012    Ms. Chrysothemis Paraskevopoulou, Time-dependent behaviour associated with underground works in weak rocks. Co-supervisor - upgraded to PhD.

Post-Doctoral Candidates (5)

2018-    Dr. Sreemoyee Gosh Ray. Sustainable Solutions in terms of wastewater and water treatment technologies and processes

2018-    Dr. Carla Carrapotosso. Ground Support optimization based in physical laboratory testing and numerical modelling

2017-2018    Dr. Behrad Mollahasani Madjdabadi, Use of Fiber Optics with Support Elements and Twin Tunnel Interaction.

2014-2015    Dr. Bryan Tatone, Simulating rock-reinforcement interaction using advanced numerical methods.

2007-2008    Dr. Steve Vardy. Sustainable Development and Green Buildings

Research Interests/Current Research

Geotechnical / Geomechanical Engineering

  • Underground Excavation Stability and Support Design for Weak Rock Tunnelling
  • Numerical Analysis / Modelling of Environmental and Geotechnical Problems (improvements to modelling techniques)
  • Near-face response of tunnels in weak, tectonized rockmasses
  • Physical Testing of Tunnel Support (including the use of fiber optics)
  • Hazard Assessment and Risk Management in Geotechnical Works

Environmental Engineering (RMC Green Team)

  • Business Intelligence as applied to Sustainable Realty Asset Operations
  • Green Building / Sustainable Development Technologies
  • Green House Gases
  • Optimization of Water and Sewage Treatment Plants
  • Environmental Impact Assessments of Engineering Projects

Professional Associations

International Society of Rock Mechanics (ISRM)

International Society of Soil Mechanics and Geotechnical Engineering (ISSMGE)

International Geosynthetics Society (IGS)

Canadian Geotechnical Society (CGS), Immediate Past Divisional Chair on National CGS Executive, Immediate Past Chair of the Engineering Geology Division, Vice-Chair Engineering Geology Division, Education Working Group, Founding Member - Kingston Section, Director Kingston Section

Professional Engineers of Greece, Technical Chamber of Greece (TEE)

Hellenic Society of Soil Mechanics and Foundation Engineering (E.E.E.E.G. M.)

Canadian Military Engineer Association (CMEA), Past President and Secretary, Kingston Section

The Hellenic Canadian Academic Association of Ontario (HCAAO)

Professional Engineers of Ontario (PEO), Immediate Past Director, Kingston Branch (P.Eng.), Education Sub-Committee Chair

Society of Professional Engineers Ontario (OSPE)

Military Engineers' Association of Canada (MEAC), Past Secretary

Publications

Published Refereed Journals

Forbes, B., Vlachopoulos, N., Diederichs, M.S., Hyett, A.J., Punkkinen, A. 2020. An in-situ monitoring campaign of a hard rock pillar at great depth within a Canadian mine. Journal of Rock Mechanics and Geotechnical Engineering. JRMGE 2019 2. Vol. 11, No. 2, April 2020.

Stavrou A., Vazaios, I., Murphy, W., Vlachopoulos, N, 2019, Refined approaches for estimating the strength of rock blocks, Geotechnical and Geological Engineering, Geotech Geol Eng (2019). https://doi.org/10.1007/s10706-019-00989-9

Vazaios, I., Vlachopoulos, N. and Diederichs, M.S., 2019. Assessing the Fracturing Mechanisms and Evolution of the Excavation Damage Zone of Tunnels in Interlocked Rockmasses at High Stresses by Applying a Finite-Discrete Element Approach. Journal of Rock Mechanics and Geotechnical Engineering. JRMGE Volume 11, Issue 4, pp. 701-722. https://doi.org/10.1016/j.jrmge.2019.02.004

Vazaios, I., Diederichs, M.S. and Vlachopoulos, N. 2019. Assessment of Strain Bursting in Deep Tunnelling by Using the FDEM Method. Journal of Rock Mechanics and Geotechnical Engineering JRMGE Vol. 11, Issue 1, 12-37 Feb 2019. https://doi.org/10.1016/j.jrmge.2018.06.007

Vlachopoulos, N. and Vazaios, I., 2018. The numerical simulation of hard rocks for tunnelling purposes at great depths: A comparison between the hybrid FDEM method and continuous techniques. Advances in Civil Engineering. DOI: https://doi.org/10.1155/2018/3868716

Bolkas D., Vazaios, I., Peidou A. and Vlachopoulos N. 2018. Detection of rock discontinuity traces using terrestrial LiDAR data and spectral transforms. Geotechnical and Geological Engineering, 36(3): 1745–1765. DOI: 10.1007/s10706-017-0430-6.

Vlachopoulos, N., Vazaios, I. and Madjdabadi, B., 2018. Investigation into the influence of excavation of twin bored tunnels within weak rock masses adjacent to slopes. Canadian Geotechnical Journal. DOI: 10.1139/cgj-2017-0392.

Vazaios, I., Vlachopoulos, N. and Diederichs, M.S., 2018. The mechanical analysis and interpretation of the EDZ formation around deep tunnels within massive rockmasses using a hybrid

finite-discrete element approach: The case of the AECL URL Test Tunnel. The Canadian Geotechnical Journal. DOI: 10.1139/cgj-2017-0578.

Vazaios, I., Farahmand, K., Vlachopoulos, N. and Diederichs, M.S. 2018. The effects of confinement on the rockmass modulus: A synthetic rockmass modelling (SRM) study. Journal of Rock Mechanics and Geotechnical Engineering, 10(3): 436-456. DOI: 10.1016/j.jrmge.2018.01.002

Oke, J., N .Vlachopoulos, and M.S Diederichs, 2018. Improvement to the convergence-confinement theory: Inclusion of support installation location and stiffness. Rock Mechanics and Rock Engineering. DOI: 10.1007/s00603-018-1418-0. RMRE-D-17-00519.

Farahmand, K., Vazaios, I., Diederichs, M.S. and Vlachopoulos, N., 2018. Investigating the scale-dependency of the geometrical and mechanical properties of a moderately jointed rock using a synthetic rock mass (SRM) approach. Computers and Geotechnics, 95: 162-179. DOI: 10.1016/j.compgeo.2017.10.002.

Skordaki, E.M. and Vlachopoulos, N., 2017. Methodology Associated with Risk Assessment of Outdoor Operating Small Arms Ranges: A Canadian Case Study. Journal of Environmental Science and Renewable Resources. December 2017, 1(1): 103.

Vlachopoulos, N., Cruz, D., and Forbes, B. 2017. Utilizing a Novel Fiber Optic Technology to Capture the Axial Response of Fully Grouted Rock Bolts. Journal of Rock Mechanics and Geotechnical Engineering. Submitted 26 July 2017, JRMGE-2017-225, V10 N3 2018.

Forbes, B., Vlachopoulos, N. and Hyett, A.J. 2017. The application of distributed optical strain sensing to measure the strain distribution of ground support members; FACETS Canadian Science Publishing. DOI: 10.1139/facets-2017-0093.

Vazaios, I., Vlachopoulos, N. & Diederichs, M.S., 2017. Integration of Lidar-Based Structural Input and Discrete Fracture Network Generation for Underground Applications. Geotech Geol Eng DOI:10.1007/s10706-017-0240-x.

Forbes, B., Vlachopoulos, N., Hyett, A.J. and Diederichs, M.S., 2017. A new optical sensing technique for monitoring shear of rock bolts. Tunnelling and Underground Space Technology. 66, 34–46, http://dx.doi.org/10.1016/j.tust.2017.03.007

Oke, J., N .Vlachopoulos, and M.S Diederichs, 2016. Semi-Analytical Model for Umbrella Arch Systems in Squeezing Conditions. Tunnelling and Underground Space Technology TUST-D-15-00289, 2016. doi:10.1016/j.tust.2016.03.006.

Langford, C., Vlachopoulos, N. and Diederichs, M.S., 2016. Revisiting Support Optimization at the Driskos Tunnel using a Quantitative Risk Approach. Journal of Rock Mechanics and Geotechnical Engineering 8 (2016), pp. 147-163 DOI information: http://dx.doi.org/10.1016/j.jrmge.2015.11.003

Vlachopoulos, N. and Basso, T.  2015. An Investigation into Sustainable Building Evaluation Strategies for use within the Canadian Forces and the Department of National Defence.  Canadian Military Journal.  http://www.journal.forces.gc.ca/vol15/no2/page36-eng.asp

Oke, J., N .Vlachopoulos, and M.S Diederichs, 2014. Numerical Analyses in the Design of Umbrella Arch Systems. Journal of Rock Mechanics and Geotechnical Engineering. JRMGE-D-14-00091R1 (Accepted: Sept 25, 2014)  

Oke, J., Vlachopoulos, N. and Marinos, V. 2014. The Pre-Support Nomenclature and Support Selection Methodology for Temporary Support Systems within Weak Rock Masses.  Geotechnical and Geological Engineering Journal. 32, no. 1. 2014a: 97–130. DOI 10.1007/s10706-013-9697-4.

Vlachopoulos, N. and Diederichs, M.S. 2014. Appropriate uses and practical limitations of 2D numerical analysis of tunnels and tunnel support response. Geotechnical and Geological Engineering Journal. Volume 31, Number 6, ISSN 0960-3182, GEGE-D-13-00064R1, 2014.

Vlachopoulos, N., Diederichs M.S., Marinos, V., Marinos P., 2013.  Tunnel Behaviour associated with the weak Alpine rock masses of the Driskos Twin Tunnel system, Egnatia Odos Highway. Canadian Geotechnical Journal, 2013, 50(1): 91-120, 10.1139/cgj-2012-0025.

Vlachopoulos, N., and Diederichs, M.S. 2009. Improved longitudinal displacement profiles for convergence confinement analysis of deep tunnels. Rock Mechanics and Rock Engineering, 42(2): 131–146. doi:10.1007/s00603-009-0176-4.

Bathurst, R.J., Vlachopoulos, N., Walters, D.L., Burgess, P.G. and Allen, T.M. 2008. Discussion paper on the influence of facing rigidity on the performance of two geosynthetic reinforced soil retaining walls, Canadian Geotechnical Journal, Vol. 44, pp. 1484-1490.

Bathurst, R.J., Vlachopoulos, N., Walters, D.L., Burgess, P.G. and Allen, T.M. 2006. The influence of facing rigidity on the performance of two geosynthetic reinforced soil retaining walls, Canadian Geotechnical Journal, Vol. 43, No. 12, pp. 1225-1237. Winner of R.M. Quigley Award, Canadian Geotechnical Society for best paper published in the Canadian Geotechnical Journal for 2006.

Conference Papers

Please Contact for Paper(s)

Vlachopoulos, N., Vazaios, I. and Forbes, B. 2020. Rock Mass Characterization through the use of Discrete Fracture Networks, LiDAR and Distributed Optical Sensing EUROCK, European Rock Mechanics Conference, International Symposium of ISRM, Trondheim, Norway. June 2020.

Vlachopoulos, N. and Skordaki, E.M. 2020. The application of blended learning strategies within undergraduate engineering courses for enhanced student learning. International Conference on Geotechnical Engineering Education, Athens, Greece, June 24-25, 2020.

Hegger, S.A., Diederichs, M.S., Vlachopoulos, N and Forbes, B., 2020. Laboratory investigation of distributed fiber-optic strain sensing to measure strain distribution during uniaxial compression, triaxial compression and direct shear testing of rock samples. EUROCK, European Rock Mechanics Conference, International Symposium of ISRM, Trondheim, Norway. June 2020.

Stavrou, A., Vazaios, I, Murphy, W, & Vlachopoulos, N. 2020. Practical estimates of rock block unconfined strength. 5th International Itasca Symposium – 2020 – Billaux, Hazzard, Nelson & Schöpfer (eds.) ©2020 Itasca International, Inc., Minneapolis, ISBN 978-0-9767577-5-7.

Farmakis, I., Marinos, V., and Vlachopoulos, N., 2019. Assessment of the GSI along rock slopes based on LiDAR and photogrammetry point clouds. 8th Greek Symposium of Geotechnical Engineering held in Athens, Greece, November 6-8, 2019 (in Greek).

Vlachopoulos, N., and Forbes, B., 2019. The Development, Testing and In-Situ use of 'Smart' Ground Support. XVII European Conference on Soil Mechanics and Geotechnical Engineering - ISSMGE. Reykjavik, Iceland, 1-6 Sept, 2019.

Vazaios, I., Vlachopoulos, N. and Diederichs, M.S., 2019. Evaluating the potential of rock bursting in hard rock deep tunnelling by applying the FDEM method. 14th International Congress of Rock Mechanics, Foz do Iguaçu, Brazil, 13-18 Sept 2019. Paper Code 14109.

Vlachopoulos, N. and Su. Y., 2019. Longitudinal Displacement Profiles for Convergence-Confinement Analysis of Excavations: Applicability to Tunnelling, Limitations and Current Advancements. Proceedings of the 72st Annual Conference of the Canadian Geotechnical Society, GeoSt.John’s, St John’s NFLD, 29 Sept – 02 Oct 2019.

Armstrong, JJ-L, Skordaki, E.M. and Vlachopoulos, N., 2019. Environmental Risk Assessment associated with a Sewage Lagoon Managed by the Canadian Armed Forces. Proceedings of the 72st Annual Conference of the Canadian Geotechnical Society, GeoSt.John’s, St John’s NFLD, 29 Sept – 02 Oct 2019.

Addai, M.K., Skordaki, E.M. and Vlachopoulos, N., 2019. An investigation into the characterization of waste water and associated removal of metals from a Canadian sewage lagoon system Proceedings of the 72st Annual Conference of the Canadian Geotechnical Society, GeoSt.John’s, St John’s NFLD, 29 Sept – 02 Oct 2019.

O’Connor, T., Forbes, B., and Vlachopoulos, N., 2019. Axial Response of Fully Grouted Rock Bolts using Distributed Fiber Optic Sensors (FOS)Proceedings of the 72st Annual Conference of the Canadian Geotechnical Society, GeoSt.John’s, St John’s NFLD, 29 Sept – 02 Oct 2019.

Farmakis, I., Marinos, V. and Vlachopoulos, N. 2019. Assessment of the GSI along rock slopes based on LiDAR and photogrammetry point clouds. In Proceedings of the 53rd US Rock Mechanics / Geomechanics Symposium, Paper No. ARMA 19–2057, New York, NY, USA June 23-26, 2019.

Vlachopoulos, N., and Forbes, B., 2019. The development and in-situ use of fiber optic continuous strain monitoring for tunnel support elements. World Tunnelling Congress 2019: Tunnels and

Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art, Naples, Italy, 3-9 May, 2019.

Bolkas D., Vazaios, I., Peidou A. and Vlachopoulos N. 2018, Discontinuity Trace Detection from Laser Scanner Point-Clouds using Space-Frequency Transforms. XIII International Association for Engineering Geology and the Environment. San Francisco, 17-21 Sept 2018.

Vazaios, I., Vlachopoulos, N. and Diederichs, M.S. 2018. The effect of jointing in Massive Highly Interlocked Rockmasses Under High Stress by using a FEM/DEM approach. XIII International Association for Engineering Geology and the Environment. San Francisco, 17-21 Sept 2018.

Armstrong, JJ-L, Skordaki,E.M. and Vlachopoulos, N., 2018. Investigation into Lagoon Management at a Canadian Armed Forces Base. Proceedings of the 71st Annual Conference of the Canadian Geotechnical Society, GeoEdmonton, 23-26 September 2018.

Vazaios, I., and Vlachopoulos, N. 2018. Discontinuum Analysis for Tunnelling Purposes: Procedure and Considerations for Creating 2D Models by Applying the FDEM Method. Proceedings of the 71st Annual Conference of the Canadian Geotechnical Society, GeoEdmonton, 23-26 September 2018.

Vlachopoulos, N. and Forbes, B., 2018. The Use of Distributed Fiber Optic Strain Sensing in Order to Conduct Quality Assurance and Quality Control for Ground Support. Proceedings of the 71st Annual Conference of the Canadian Geotechnical Society, GeoEdmonton, 23-26 September 2018.

Helmer-Smith, H., Dagenais, M.A., Vlachopoulos, N. and Forbes, B. 2018. Structural Health Monitoring of Legacy WWII Infrastructure within the Canadian Armed Forces, a Stage-Wise Approach. Canadian Society of Civil Engineering Annual Conference, Fredericton, 13-16 June 2018. Winner: Best Overall Student Presentation of Conference

Vazaios, I., Vlachopoulos, N. and Diederichs, M.S. 2018. A Multidisciplinary Approach in Modelling Hard Rocks with Natural Discontinuities: From Data Collection to Numerical Simulation. 52nd US Rock Mechanics /Geomechanics Symposium: Seattle 2018,24-27 June 2018.

Forbes, B., Vlachopoulos, N. and Diederichs, M.S., Hyett, A.J., 2018. Spile support performance monitored in a shallow urban tunnel using distributed optical strain sensing. 52nd US Rock Mechanics /Geomechanics Symposium: Seattle 2018,24-27 June 2018.

Vlachopoulos N. and Forbes B., 2017. The use of Distributed Optical Sensing Techniques to Optimize Tunnel Support; Not all Fiber Optic Methods are similar. Proceedings of the 70th Annual Conference of the Canadian Geotechnical Society GeoOttawa 2017, Ottawa, October 1-4, 2017.

Skordaki, E.M. and Vlachopoulos N., 2017. Risk Management at Operating Outdoor Small Arms Ranges: A Canadian Case Study Proceedings of the 70th Annual Conference of the Canadian Geotechnical Society GeoOttawa 2017, Ottawa, October 1-4, 2017.

Vazaios I. and Vlachopoulos N., 2017. The Evolution of the Excavation Damage Zone of Tunnels in Brittle Rockmasses using a FEM/DEM Approach. Proceedings of the 70th Annual Conference of the Canadian Geotechnical Society GeoOttawa 2017, Ottawa, October 1-4, 2017.

Vazaios, I., Vlachopoulos, N. and Forbes, B. 2017. A DFN-LiDAR-optical sensor method for the estimation of rockmass conditions in underground projects. World Tunnelling Congress 2017, Bergen, Norway, June 2017.

Vlachopoulos, N. and Forbes, B. 2016. Using Innovative Techniques in order to Optimize Tunnel Support Schemes within Weak Rockmasses. Tunnelling Association of Canada, 2016 Annual Conference, Ottawa, ON, Canada, October 16-18, 2016.

Vlachopoulos, N. and Vazaios I. 2016. Interaction of Parallel Excavation of Twin Bored Tunnels within Slopes of Weak Rock Masses. Proceedings of the 69th Canadian Geotechnical Conference, GeoVancouver, Vancouver, Canada, October 2 – 5, 2016.

Holt, S.W., Vlachopoulos, N, and Forbes, B. 2016. Determination of Grout-Soil Interaction Parameters for Ground Support Elements. Proceedings of the 69th Canadian Geotechnical Conference, GeoVancouver, Vancouver, Canada, October 2 – 5, 2016.

Vazaios, N. Vlachopoulos, M.S. Diederichs, 2016. Sampling Technique Biases and their Effect on Discrete Fracture Network Generation for Underground Works using LiDAR Scanning. Proceedings of the 69th Canadian Geotechnical Conference, GeoVancouver, Vancouver, Canada, October 2 – 5, 2016.

Skordaki, E.M. and Vlachopoulos, N. 2016. Redesigning Field School: Blended learning strategies for enhanced student metacognition in a sustainable field exercise design. Proceedings of the 69th Canadian Geotechnical Conference, GeoVancouver, Vancouver, Canada, October 2 – 5, 2016.

Vazaios, I., Farahmand, K., Vlachopoulos, N., and Diederichs, M.S., 2016. A Study of the Geometrical and the Mechanical Scale-Dependency of Fractured Rockmasses Using a Micro/Meso Mechanical Approach. Proceedings of the 69th Canadian Geotechnical Conference, GeoVancouver, Vancouver, Canada, October 2 – 5, 2016.

Forbes, B. and Vlachopoulos, N., 2016. A New Look at Cable Bolt and D-Bolt Support Under Axial Load. Proceedings of the 69th Canadian Geotechnical Conference, GeoVancouver, Vancouver, Canada, October 2 – 5, 2016.

Skordaki, E.M. and Vlachopoulos, N., 2016.Environmental Risk Assessments and Ranking of 65 Small Arms Ranges – A Case Study. 2nd Annual International Conference on Geology, Athens Institute for Education and Research, Athens, Greece, 6-9 June 2016.

Forbes, B., Vlachopoulos, N., Diederichs, M.S., and Hyett, A.J., 2016. A study on the axial performance of D-Bolts. Proc. Eighth International Symposium on Ground Support in Mining and Underground Construction: Ground Support 2016, Luleå, Sweden, 2016.

Cruz, D. and Vlachopoulos, N. 2016. Axial Pullout Tests associated with Rockbolts outfitted with a Distributed Optical Sensing Technique. XV Geotechnical Colombian Congress / 2nd International Specialized Conference on Soft Rocks; International Society of Rock Mechanics, Cartagena, Colombia, October 6-7, 2016.

Vlachopoulos N. and Vazaios I., 2015. The Influence of Tunnelling on Slope Stability. In the Proceedings of the GeoQuebec 2015 Conference, Quebec, Canada, September 20 – 23, 2015.

Forbes, B., Vlachopoulos, N., Diederichs, M.S. (2015). Improving Ground Support Design with Distributed Strain Monitoring. Proc. of the 68th Canadian Geotechnical Conference and 7th Canadian Permafrost Conference: GEOQuébec 2015, Québec City, QC.

Skordaki, E.M. and Vlachopoulos, N., 2015, Redesigning Field School: Successful Implementation of E-Participation in Geotechnical Field Exercises. Proceedings of the GeoQuebec 2015 Conference, Quebec, Canada, September 20 – 23, 2015.

Vazaios I. and Vlachopoulos N., 2015. The Influence of Segmental Lining in Deep TBM Tunneling. In the Proceedings of the GeoQuebec 2015 Conference, Quebec, Canada, September 20 – 23, 2015.

Vlachopoulos, N. & Forbes, B., 2015. Temporary Tunnel Support Strategies: Optimization and Testing. Proc. of the ITA WTC 2015 Congress and 41st General Assembly: SEE Tunnel: Promoting Tunneling in SEE Region, Dubrovnik, Croatia.

Forbes, B., Vlachopoulos, N., & Diederichs, M.S., 2015. Monitoring the Ground in Order to Optimize Support: Ground Support Elements Equipped with Optical Frequency Domain Reflectometry Technology. In Proceedings of Eurock 2015 & Geomechanics Colloquium, Saltsburg, Austria, October 7 - 10, 2015. Winner: Best Overall Presentation of Conference

Farahmand K., Vazaios, I., Diederichs, M.S., Vlachopoulos N., 2015. Generation of a Synthetic Rock Mass (SRM) Model for Simulation of Strength Crystalline Rock using a Hybrid DFN-DEM Approach. In Proceedings of Eurock 2015 & Geomechanics Colloquium, Saltsburg, Austria, October 7 - 10, 2015.

Tatone, B.S.A., A. Lisjak, O.K. Mahabadi, and Vlachopoulos, N., 2015. Verification of the implementation of rock-reinforcement elements in numerical analyses based on the hybrid combined finite-discrete element method (FDEM). In Proceedings of the 49th US Rock Mechanics/Geomechanics Symposium, 28 June - 1 July 2015, San Francisco, USA, Paper 302.

Vazaios, I., Vlachopoulos, N., Diederichs, M.S., 2015. Discrete Fracture Network generation for Mechanical Stability Analysis of Underground Works. In the Proceedings of ITAWTC 2015 Congress, Dubrovnik, Croatia, May 22-28, 2015.

Oke, J., N .Vlachopoulos, and M.S Diederichs, 2015. Recent Advances in the Design and Understanding of Umbrella Arch Systems. International Society of Rock Mechanics. Montreal, Canada. May 2015.

Tatone, B.S.A., Lisjak, A., Mahabadi, O.K., and Vlachopoulos, N, 2015. Incorporating rock-reinforcement elements into numerical analyses based on the hybrid combined finite-discrete element method (FDEM). International Society of Rock Mechanics. Montreal, Canada. May 2015.

Vazaios I., Diederichs M.S., and Vlachopoulos N., 2015. A Study of the Geometrical and the Mechanical Scale Dependency of Fractured Rockmasses Using a Micro-Mechanical Approach. International Society of Rock Mechanics. Montreal, Canada. May 2015.

Vazaios, I, Diederichs, M.S., and Vlachopoulos, N., 2014. Factors Affecting Realism of DFNs for Mechanical Stability Analysis, 2014. International Discrete Fracture Network Engineering Conference, Vancouver, B.C., October 2014.

Vlachopoulos, N. and Forbes, B., 2014. Utilizing a Distributed Optical Sensing Technique in order to continually monitor the strain of a Forepole temporary support element employed within an Umbrella Arch System. 2nd Eastern European Tunnelling Conference, Athens, Greece, Sept 2014.

Vlachopoulos, N. Forbes, B, Oke, J. and Hyatt, A. 2014. The Development of a Technique in order to Measure the Distributed Optical Sensing of a Forepole temporary support element employed within an Umbrella Arch System. EUROCK, International Symposium, May, Vigo, Spain. May 2014.

Oke, J., N .Vlachopoulos, and M.S Diederichs,2014. The Reduction of Surface Settlement by Employing Umbrella Arch Systems for Different Excavation Methods. EUROCK, International Symposium, May, Vigo, Spain. May 2014.

Vlachopoulos, N., Oke, J and Forbes, B.. 2014. Determination of Mechanical Behaviour and Performance of Forepole Support Elements used in Tunnelling, Canadian Geotechnical Society, GeoRegina, Regina, SK, Sept-Oct 2014.

Oke, J., N .Vlachopoulos, M.S Diederichs, and I. Vazaios, 2014. The use of three dimensional numerical analysis procedures for the geotechnical analysis for design and construction of tunnel infrastructure. Canadian Geotechnical Society, GeoRegina, Regina, SK, Sept-Oct 2014.

Kakhi, S and Vlachopoulos, N. 2014. Instrumentation, Monitoring, Construction and Modelling of the Masjed-E-Soleiman Dam Infrastructure Project. Canadian Geotechnical Society, GeoRegina, Regina, SK, Sept-Oct 2014.

Vazaios, I., Vlachopoulos, N. Latto, M.J. and Diederichs, M.S., 2014. LiDAR as input for Discrete Fracture Networks: A comparison of automated and manual joint mapping using a scanned surface model. Canadian Geotechnical Society, GeoRegina, Regina, SK, Sept-Oct 2014.

Forbes, B., Vlachopoulos, N., Oke, J., & Hyett, A.J., 2014. The Application of Distributed Optical Sensing for Monitoring Temporary Support Schemes. Canadian Geotechnical Society, GeoRegina, Regina, SK, Sept-Oct 2014.

Oke, J., N .Vlachopoulos, and M.S Diederichs, 2014. Semi-Analytical Model of an Umbrella Arch Employed in Hydrostatic Tunnelling Conditions. American Rock Mechanics Association, Minnesota, USA, June 2014.

Oke, J., and N .Vlachopoulos 2014. Performance of Forepole Support Elements used in Tunnelling within Weak Rock Masses. International Association for Engineering Geology Congress, September, Torino.

Langford, C., Vlachopoulos, N., M.S. Diederichs, and D.J. Hutchinson 2014. Application of Reliability Methods to Tunnel Lining design in Weak Heterogeneous Rockmasses to include Case Studies. International Association for Engineering Geology Congress, Torino, September 2014

Vlachopoulos, N., Fortsakis, P and Oke,J. 2013. Investigation into the Influence of Parallel Excavation of Twin Bored Tunnels within Weak Rock Masses. GEO Montreal, Canadian Geotechnical Society, Oct 2013. Montreal, Quebec, Canada.

Vlachopoulos, N. and Basso, T., 2013. Determining the Policy and Performance of Green Buildings. Climate Change Technology Conference, Engineering Institute of Canada, 29-31 May 2013, Montreal, Quebec, Canada.

Oke, J., Vlachopoulos, N., and M.S Diederichs, 2013. The Reduction of Surface Settlement by Employing Umbrella Arch Systems. GEO Montreal, Canadian Geotechnical Society, Oct 2013. Montreal, Quebec, Canada.

Oke, J., Vlachopoulos, N., and M.S Diederichs, 2013. Modification of the Supported Longitudinal Displacement Profile for Tunnel Face Convergence in Weak Rock. American Rock Mechanics Association, June 2013. San Francisco, USA.

Oke, J., Vlachopoulos, N. and M.S. Diederichs, 2013. Pre-Support Nomenclature and Support Selection Methodology for Temporary Support Systems within Weak Rock Masses. World Tunnel Congress, 2013 Geneva, Switzerland.

Basso, T & Vlachopoulos, N., 2013. Investigation into the Suitability of Green Building Evaluation Strategies for use within the Canadian Forces and the Department of National Defence. Canadian Society for Civil Engineering (CSCE). May 29-June 1, Montreal, Quebec.

Basso, T. and Vlachopoulos, N. 2012. Investigation into the Suitability of Green Building Evaluation Strategies for use within the Canadian Department of National Defence. Society of Civil Engineering Conference (CSCE), June 2012, Edmonton, Alberta, Canada.

Paraskevopoulou, C., J. Oke and Vlachopoulos, N. 2012. Comparison Between Practical Modelling Approaches for Long Term Behaviour and Support Response. Tunnels and Underground Space: Sustainability and Innovation Conference, October 2012, Montreal, Quebec, Canada.

Oke, J., Vlachopoulos, N, and M.S. Diederichs, 2012. Sensitivity Analysis of Orientations and Sizes of Forepoles for Underground Excavations in Weak Rock. American Rock Mechanics Association 46th US Rock Mechanics / Geomechanics Symposium, June 2012, Chicago, IL, USA.

Paraskevopoulou, C., Vlachopoulos, N., and M.S. Diederichs, 2012. Long Term Tunnel Behaviour and Support Response Analysis using 2D numerical modelling Methods. American Rock Mechanics Association 46th US Rock Mechanics / Geomechanics Symposium, June 2012, Chicago, IL, USA.

Oke, J., Vlachopoulos, N. and M.S Diederichs, 2012. Improved Input Parameters and Numerical Analysis Techniques for Temporary Support of Underground Excavations in Weak Rock. RockEng12, 21st Canadian Rock Mechanics Symposium, May 2012, Edmonton, Alberta, Canada.

Oke, J., Vlachopoulos, N. and M.S Diederichs, 2012. Determination of the Mechanistic Behaviour of a Forepole Support Element when Tunnelling within Weak Rock Masses. Eurock, International Symposium, May 2012, Stockholm, Sweden.

Basso, T., Vlachopoulos, N., and Hulley, M. 2012. Green Buildings and Sustainable Infrastructure for the Canadian Forces. The International Polar Year 2012 Conference: From Knowledge to Action, April 2012, Montreal, Quebec.

Oke, J. Vlachopoulos, N. and M.S Diederichs, 2012. Three-Dimensional Sensitivity Analysis of Forepole Support Elements for Underground Excavations in Weak Rock. ARMA, 46th US Rock Mechanics / Geomechanics Symposium, June 2012, Chicago, USA.

Vlachopoulos, N., Skordaki, E.M., and D. Alexakis, 2012, Case Study: Area-Wide Environmental Compliance Study for Military Bases within the Canadian Forces. Protection and Restoration of the Environment XI Conference, July 2012, Thessaloniki, Macedonia, Greece.

Vlachopoulos, N., Skordaki, E.M., and D. Alexakis, 2012, Case Study: 16 Years of Optimizing the Performance of Sewage and Water Treatment Plants at Canadian Military Facilities. Protection and Restoration of the Environment XI Conference, July 2012, Thessaloniki, Macedonia, Greece.

Skordaki, E.M., and Vlachopoulos, N., 2011. The Use of State of the Art E-Learning Technology in Support of Education and Professional Development for Geotechnical and Geological Engineers as well as Geo-professionals. Geo-Innovation Addressing Global Challenges 14th Pan-American Conference on Soil Mechanics and Geotechnical Engineering, 64th Canadian Geotechnical Conference, and 5th Pan-American Conference on Teaching and Learning of Geotechnical Engineering, October 2-6, 2011, Toronto, Ontario, Canada.

Skordaki, E.M. and Vlachopoulos, N., 2011. The Use of State of the Art E-Learning Technology in Support of Education and Professional Development for Members of the Canadian Forces International Meeting on Military Academies, Colleges, and Schools Royal Military College St-Jean Saint-Jean-sur-Richelieu, Québec, Canada November 3rd to 5th, 2011.

Vlachopoulos, N., Skordaki, E-M., Simard, M. and Basso, T. 2011. Detailed Investigation of an Area-Wide Environmental Compliance and Policy Study for Air Force Wings within the Canadian Forces. Canadian Society of Civil Engineering Conference, June 2011, Ottawa, Ontario, Canada.

Basso, T. and Vlachopoulos, N. 2011. Investigation into Sustainable Development Strategies for the Department of National Defence. Canadian Society of Civil Engineering Conference, June 2011, Ottawa, Ontario, Canada.

Thebault, D. and Vlachopoulos, N. 2011. Monitoring and Quantification of Energy Savings Associated with Green Buildings – Leadership in Energy and Environmental Design (LEED) Focused. Canadian Society of Civil Engineering Conference, June 2011, Ottawa, Ontario, Canada.

Vlachopoulos, N., Vardy, S and E.M. Skordaki, 2010. Sustainable Development and Green Building Technologies Employed within the far North within Canada. A Case study of Canadian Forces Station, Alert. The 2nd International Conference on Waste Engineering and Management (ICWEM), October 2010, Shanghai, China.

Vlachopoulos, N. and Skordaki, E.M., 2010. Stormwater and Effluent Management at Canadian Forces Wings – An Area-Wide Approach. The 2nd International Conference on Waste Engineering and Management (ICWEM), October 2010, Shanghai, China.

Vlachopoulos, N., Heffernan P., Wight G., 2009. Canadian Forces Military Engineering in a Global Framework. 2009 Annual General Conference, Canadian Society for Civil Engineering, St John’s, Newfoundland.

Rogers, S., Vlachopoulos, N. and Bailey, M. 2008. Composting Sewage Sludge as an Alternative to Land Spreading at a Canadian Military Base, International Conference on Waste Engineering and Management, CSCE Hong Kong, May 2008.

Vlachopoulos, N., Bailey, M., and Rogers, S. 2008. Optimizing the Performance of Sewage and Water Treatment Plants at Canadian Military Facilities. Environmental Science and Engineering Magazine, pp. 22-26., May 2008

Vlachopoulos N , and M.S. Diederichs, 2007. Material Behaviour Associated with Tunnelling through the Weak Rock Masses of the Alpine System in Northern Greece. 1st Canada-US Rock Mechanics Symposium, Vancouver, B.C., 2007.

Vlachopoulos, N , Diederichs, 2003. M. Rock Mechanics in Highly Deformed Ground: Tunnelling in Greece. 56th Canadian Geotechnical Conference, 4th Joint IAH-CNC/Canadian Geotechnical Society, Winnipeg, Manitoba, Canada, 2003.

Vlachopoulos, N., D. Chapman, J. Mathews, J.M. Pouliot., 2003. Performance of Water Systems at Canadian Army and Air Force Bases, 31st Annual Conference of the Canadian Society for Civil Engineering, Moncton, New Brunswick, Canada, ENJ –195, Abs Pg 209.

Vlachopoulos N., D. Walters, R.J. Bathurst, 2002. The Influence of Wall Facing on the Performance of Full-Scale Model Geosynthetic Reinforced Retaining Walls (Segmental and Wrapped-Face). 55th Canadian Geotechnical Conference, Niagara Falls, Ontario, Canada, 2002.

Bathurst, R.J., D. Walters, K. Hatami, D. Saunders, N. Vlachopoulos, P. Burgess, & T.M. Allen, 2002. Performance testing and numerical modelling of reinforced soil retaining walls. Seventh International Geosynthetics Conference, Nice, France.

Vlachopoulos, N. ,J.M. Pouliot, 2002. Optimizing the Performance of Sewage Treatment Plants at Canadian Military Facilities. Canadian Society for Civil Engineering (CSCE), 30th Annual Conference, Montreal, Quebec, Canada.

Bathurst, R.J., D. Walters, N. Vlachopoulos, P. Burgess, & T.M. Allen 2000. Full Scale Testing of Geosynthetic Reinforced walls (Invited keynote paper). In J.G. Zornberg & B.R. Christopher (ed.), Geotechnical special publication No. 103, Advances in transportation and geoenvironmental systems using geosynthetics, Proc. of sessions of Geo-Denver 2000, Denver, 5-8 August 2000: 201-217. Denver: ASCE.

Walters, D.L., Hatami K., Bathurst R.J., Vlachopoulos N., Saunders D., Burgess, P., Allen, T.M., 2000. Full Scale Testing and Modeling of Geosynthetic Reinforced Soil Retaining Walls. 53rd Canadian Geotechnical Conference, Montreal, Canada.

Bathurst, R.J, Walters D., Vlachopoulos N., Burgess P., and T.M. Allen, 1999, Full Scale Testing of Geosynthetic Reinforced Walls Keynote Lecture, 1st South American Symposium / 3rd Brazilian Symposium on Geosynthetics, Rio de Janeiro, Brazil, October 1999

Selected Books and Chapters

Vlachopoulos, N. and Vazaios, I. 2019. Top 5 Contributions in Civil Engineering: The Numerical Simulation of Hard Rocks for Tunnelling Purposes at Great Depths: A Comparison between the Hybrid FDEM Method and Continuous Techniques. Avid Science. http://www.avidscience.com/book/top-5-contributions-in-civil-engineering/

Applied Multidimensional Geological Modelling, 2019. Geotechnical Applications of 3D models – co-author of Chapter 14, Geotechnical Applications of Geological Models and Numerical Modelling, 2019.

International Symposium of Rock Mechanics, Soft Rock Commission, Tunnel Support, Chapter Contribution, 2018.

Selected Major Reports

Vlachopoulos, N., Skordaki, E.M., Legault, P. and Basso, T., 2019. Investigation of Sustainable Framework for Realty Property Operations within the Department of National Defence. Real Property Operations Group, ADM(IE), Ottawa, April 2019.

Forbes, B., and Vlachopoulos, N. Weeks Island Distributed Optical Fiber Strain Sensing Rock Bolt Trails: Stage 1 – Pull Out Tests. Summary Report. Windsor Salt and Norton Salt Mine, Weeks Island, Louisiana, USA. June 2018.

Vlachopoulos, N., Skordaki, E.M., Legault, P. and Basso, T., 2018. Investigation of Sustainable Framework for Realty Property Operations within the Department of National Defence. Real Property Operations Group, ADM(IE), Ottawa, April 2018.

Skordaki, E.M., Vlachopoulos, N., Tolnai, S. and Breuvart E. RMC Green Team / DND Quality Management Program for Water and Waste Water Facilities – Risk Assessment Real Properties Group (West) – April 2018

Vlachopoulos, N., Skordaki, E.M. and Breuvart, E. Optimization Associated with the Mainland BC Range and Training Areas. Real Properties Group (Pacific), Part II - April 2018.

Vlachopoulos, N., Skordaki, E.M. and Breuvart, E. Optimization Associated with the Mainland BC Range and Training Areas. Real Properties Group (Pacific), Part I - April 2017.

Vlachopoulos, N., Skordaki, E.M., and Basso, T. Investigation of Sustainable Framework for Realty Property Operations within the Department of National Defence. ADM(IE), Real Properties Group, March 2017.

Vlachopoulos, N., Skordaki, E.M., and Basso, T., 2016. Investigation of Sustainable Framework for Realty Property Operations within the Department of National Defence. 3rd Canadian Division Support Group, Engineering Services, Edmonton, Feb 2016.

Vlachopoulos, N., Skordaki, E.M., and Basso, T., 2015. Investigation of Sustainable Framework for Realty Property Operations within the Department of National Defence. 3rd Canadian Division Support Group, Engineering Services, Edmonton, Oct 2015.

Vlachopoulos, N. and Skordaki, E.M. 2013. Development of Statement of Operational Requirement for Incinerator Unit for Options for the Polar Continental Shelf Program (PCSP) and Canadian Forces Arctic Training Centre (CFATC) Operations in Resolute Bay, Nunavut. Natural Resources Canada, October 2013.

Vlachopoulos, N. and Basso T. 2012. Part I – Environmental Baseline Study and Waste Audit. Identification, Management and Disposal Options for the Polar Continental Shelf Program (PCSP) and Canadian Forces Arctic Training Centre (CFATC) Operations in Resolute Bay, Nunavut. Natural Resources Canada and Director Land Infrastructure, December 2012.

Vlachopoulos, N., Skordaki, E.M., Robitaille J. and Basso T. 2012. Part II – Waste Management Study and Options Analysis. Identification, Management and Disposal Options for the Polar Continental Shelf Program (PCSP) and Canadian Forces Arctic Training Centre (CFATC) Operations in Resolute Bay, Nunavut. Natural Resources Canada and Director Land Infrastructure, December 2012.

McQuat, G., and Vlachopoulos, N, 2012. Geospatial Data Acquisition in Support of Mobility Analysis for the Canadian Forces. Defence Research and Development Canada, Centre for operational Research and Analysis, Land Capability Development Operational Research Team, Directorate of Land Concepts and Design. Department of National Defence, DRDC CORA 2012-164, July 2012.

Harrop, R., Barber, G., Vlachopoulos, N. GIS and Terrain Analysisfor Military Operational Assessment of Mobility. Defence Research and Development Publication. Center for Operational Research and Analysis, Land Capability Development Operational Research Team, Directorate of Land Concepts and Design. DRDC CORA CR 2011-096, July 2011.

Vlachopoulos, N and Vardy, S. Investigation into Green Building Options for CFS Alert. Investigation for 1 CAD, A4 Construction Engineering. March 2010.

Vlachopoulos, N and Vardy, S. State-of-the-Art Review of Green Infrastructure Technologies. Investigation for 1 CAD, A4 Construction Engineering. March 2010.