Professor John Harrison

Associate Director, Lassonde Mineral Engineering Program

Geomechanics and Mining Icon Keck Chair of Engineering Rock Mechanics

Professor John Harrison

Contact me

John Harrison
Dept. of Civil Engineering
University of Toronto
35 St. George St.
Toronto, Ontario
Canada, M5S 1A4

Room: GB314C

Tel: 416-978-1634

john.harrison@utoronto.ca

Research Interests

Professor Harrison joined the Department of Civil Engineering and the Lassonde Mineral Engineering Program in October 2010 from Imperial College, UK, as the Keck Chair of Engineering Rock Mechanics. His main research interests are in the unpredictability of the properties of fractured rock masses, particularly with regard to rock engineering design. He is currently the convenor of a pan-European group of experts that is investigating the future development of rock engineering design within the European geotechnical engineering design code Eurocode 7. A UK Chartered Civil Engineer, Professor Harrison has published many scientific papers, books and book chapters, and regularly acts as a consultant to the civil, mining and petroleum engineering sectors.

Teaching

Course Code Title & Description Instructor Session Location(s) Day(s) Start Time End
MIN429H1 Prof. John Harrison Fall 2016 Scheduled by the Office of the Faculty Registrar.
CIV1404H Prof. John Harrison Fall 2016 GB117 Mondays 14:00 16:00

Research Personnel

As a group we work on various topics in rock mechanics and rock engineering, but with particular emphasis on developing an understanding of unpredictability in rock mechanics properties.

PhD students

Anmol Bedi

  • Research student at Imperial College London, UK
  • Thesis title: A proposed framework for characterising uncertainty and variability in rock mechanics and rock engineering
  • Successfully defended on 18 July 2013
Nezam Bozorgzadeh
  • General research topic: epistemic uncertainty and rock engineering limit state design
  • Commenced September 2012
Ke Gao
  • General research topic: characterising the unpredictability of in situ stress
  • Commenced September 2012

MASc students

Greg Gambino

  • General research topic: hydraulic fracturing for stress amelioration
  • Commenced January 2013
Roozbeh Roostaei
  • General research topic: epistemic characterisation of rock strength
  • Commenced January 2013

Undergraduate students

Quiyi (Bing) Li

  • Research topic: slaking properties of rocks from the Saqqara region, Egypt
  • Summer research student 2012
Ali El Matarawi
  • Research topic: application to rock of Ottosen's polyaxial concrete strength criterion
  • Summer research student 2013

Publications

Journals

  1. Rasouli V. and Harrison J.P., 2010.  Assessment of rock fracture surface roughness using Riemannian statistics of linear profiles. Int. J. Rock Mech. Min. Sci., 47, pp.940‑948.
  2. Harrison J.P. and Hudson J.A., 2010. Incorporating parameter variability in rock mechanics analyses: fuzzy mathematics applied to underground rock spalling. Rock Mech. Rock Eng., 43, pp.219‑224.
  3. Garcia X., Latham J.-P., Xiang J. and Harrison J.P., 2009. A clustered overlapping sphere algorithm to represent real particles in discrete element modelling. Geotechnique, 59, 9, pp.779‑784.
  4. Harrison J.P., 2008. Contributions to Géotechnique 1948–2008: Engineering geology, rock mechanics and rock engineering.Geotechnique, 58, 5, pp.449‑455.
  5. Tyrologou P, Dudeney A.W.L., Harrison J.P. and Grattoni C, 2007. Stabilised mineral-biomass mixes in groundwork: fundamentals. Proc. Inst. Civil. Eng.: Waste and Resource Management, 160, WR2, pp.71‑76.
  6. Velios A. and Harrison J.P., 2007. Digital reconstruction of fragmented archaeological objects. Studies in Conservation, 52, pp.19‑36.
  7. Yuan S.C. and Harrison J.P., 2006. A review of the state of the art in modelling progressive mechanical breakdown and associated fluid flow in intact heterogeneous rocks. Int. J. Rock Mech. Min. Sci., 43, pp.1001-1022.
  8. Yuan S.C. and Harrison J.P., 2005. Development of a hydro-mechanical local degradation approach and its application to modelling fluid flow during progressive fracturing of heterogeneous rocks. Int. J. Rock Mech. Min. Sci., 42, pp.961‑984.
  9. Yuan S.C. and Harrison J.P., 2004. An empirical dilatancy index for the dilatant deformation of rock. Int. J. Rock Mech. Min. Sci. Int. J. Rock Mech. Min. Sci., 41, pp.679‑686.
  10. Velios A., Harrison J.P. and Cummings A., 2003. Traditional and modern methods for the solution of the fragmentation problem. Archaeology and Art, 89, pp.93‑97. (In Greek, published by DOL, Athens).
  11. Velios A., Harrison J.P. and Cummings A., 2003. Digital reconstruction of fragmented artefacts: improved methods for data capture. The Conservator, 27, pp.81‑94.
  12. Kostakis K., Harrison J.P. and Heath S.M., 2003. Silicone rubber castings for aperture measurement of rock fractures. Int. J. Rock Mech. Min. Sci., 40, pp.939‑945.
  13. Pine R.J. and Harrison, J.P., 2003. Current trends and future developments in rock mass classification. Quarterly J. Eng. Geol. And Hydrogeology, 36, pp.5‑16.
  14. Fang Z. and Harrison J.P., 2002. Numerical analysis of progressive fracture and associated behaviour of mine pillars using a local degradation model. Trans. Inst. Min. Metall., 111, A59‑72.
  15. Fang Z. and Harrison J.P., 2002. Development of a local degradation approach to the modelling of brittle fracture in heterogeneous rocks. Int. J. Rock Mech. Min. Sci., 39, pp.443‑457.
  16. Fang Z. and Harrison J.P., 2002. Application of a local degradation model to the analysis of brittle fracture of laboratory scale rock specimens under triaxial conditions. Int. J. Rock Mech. Min. Sci., 39, pp.459‑476.
  17. Fang Z. and Harrison J.P., 2002. A mechanical degradation index for rock. Int. J. Rock Mech. Min. Sci., 38, pp.1193‑1199.
  18. Harrison J.P., Ferrero A.M. and Cravero S., 2001. Fuzzy partitioning algorithms applied to the interpretation of distinct element modelling results. Geotechnique, 50, pp.677‑686.
  19. Lee S.D. and Harrison J.P., 2001. Empirical parameters for non‑linear fracture stiffness from numerical experiments of fracture closure. Int. J. Rock Mech. Min. Sci., 38, pp.721‑727.
  20. Grenon M., Hadjigeorgiou J., Harrison J.P. and Banas R., 2001. Drift stability in moderately jointed rock. CIM Bulletin, 94, pp.74‑79.
  21. Reid T.R. and Harrison J.P., 2000. A semi­‑automated methodology for discontinuity trace detection in digital images of rock mass exposures. Int. J. Rock Mech. Min. Sci., 37, pp.1073‑1089.
  22. Harrison J.P., 1999. Selection of the threshold value in RQD assessments. Int. J. Rock Mech. Min. Sci. & Geomech. Abstr., 36, pp.673‑685.
  23. Kostakis K. and Harrison J.P., 1999. Numerical Analysis of Gas-Bubble Flow in Water-Filled Natural Fractures. Computers & Geotechnics,24, pp.3‑28.
  24. Harrison J.P., 1995. A PostScript program for the production of equal angle equatorial hemispherical and spherical projection nets. Int. J. Rock Mech. Min. Sci. & Geomech. Abstr., 32, 2, pp.143‑147.
  25. Hudson J.A. and Harrison J.P., 1992. A new approach to studying complete rock engineering problems. Quarterly Journal of Engineering Geology, 25, pp.93‑105.

Conferences

  1. Bedi A. & Harrison J.P, 2013. A comparison of Bayesian techniques and non-probabilistic models in rock engineering design. Proc. 47th US Rock Mech./Geomech. Symp., San Francisco, CA, USA.
  2. Bedi A. & Harrison J.P, 2012. Stress states around underground openings and the necessity for polyaxial peak strength criteria in engineering design. Proc. World Tunnelling Congress, Bangkok, Thailand.
  3. Bedi A. & Harrison J.P, 2012. Dealing with epistemic uncertainty in fractured rock masses. Proc. ISRM Int. Symp. Eurock 2012: Stockholm, Sweden.
  4. Bedi A. & Harrison J.P, 2012. Using polyaxial peak strength criteria with parameters derived from conventional triaxial tests. Proc. ISRM Int. Symp. Eurock 2012: Stockholm, Sweden.
  5. Harrison J.P. & Hadjigeorgiou J., 2012. Challenges in selecting appropriate input parameters for numerical models. Proc. 46th US Rock Mech. Symp., Chicago, United States.
  6. Hadjigeorgiou J. & Harrison J.P., 2011. Uncertainty and sources of error in rock engineering. Proc. 12th ISRM Congress, Beijing, China.
  7. Harrison J.P., Xiang J. and Latham, J.‑P., 2010. Stress heterogeneity in a fractured rock mass modelled with the combined finite-discrete element method. Proc. 44th US Rock Mech. Symp./5th US‑Canada Rock Mech. Symp., Salt Lake City, United States.
  8. Xiang J., Latham J-P., Harrison, J.P. and Zhang, Z.Q., 2010. A numeric simulation of rock avalanches using the combined finite-discrete element method, FEMDEM. Proc. 44th US Rock Mech. Symp./5th US‑Canada Rock Mech. Symp., Salt Lake City, United States.
  9. Latham, J.‑P., Xiang, J., Harrison, J.P. and Munjiza, A., 2010. Development of Virtual Geoscience Simulation Tools, VGeST for irregular blocky rock applications in rock engineering using the combined finite discrete element method, FEMDEM. Proc. 44th US Rock Mech. Symp./5th US‑Canada Rock Mech. Symp., Salt Lake City, United States.
  10. Bedi A. and Harrison J.P., 2009. Polyaxial peak strength criteria and the design of underground openings. Proc. ISRM Int. Symp. Eurock 2009: Dubrovnik, Croatia.
  11. Hudson J.A. and Harrison J.P., 2009. Rock stresses, rock strengths and spalling prediction. Proc. 7th Int. Symp. Rockburst and Seismicity in Mines, Dalian, China.
  12. Brodrick T.J. and Harrison J.P., 2009. Using the local degradation approach to assess and overcome errors owing to damage in multistage triaxial testing of rock. Proc. Sinorock 2009, Hong Kong, China.
  13. Geary A., Mao M.Z., Harrison J.P. and Pullen D., 2007. Creative Limits: Applying finite element analysis to assess static stress in a large-scale stone sculpture by Henry Moore. Proc. ICHIM’07 (International Cultural Heritage Informatics Meetings), Toronto, Canada.
  14. Yuan S-C. and Harrison J.P., 2007. Brittle failure of mechanically anisotropic heterogeneous rock. Proc. 11th ISRM Congress, Lisbon, Portugal.
  15. Harrison J.P., Hudson J.A. and Carter J.N.C., 2007. Is there a relation between the in situ principal stress magnitudes in rock masses? Proc. 1st Canadian‑US Rock Mechanics Symposium, Vancouver, Canada.
  16. Barker L., Geary A. and Harrison J.P., 2007. Towards an ergonomic gestural interface for computers. Proc. Ergonomics Soc. Ann. Conf., Nottingham, U.K.
  17. Yuan S-C. and Harrison J.P., 2006. Modelling near-well hydromechanical behaviour of a borehole in an anisotropic stress field. Proc. 41stUS Rock Mech. Symp., Golden, Colorado, US.
  18. Harrison J.P. and Hudson J.A., 2006. Comprehensive hazard identification in rock engineering using interaction matrix mechanism pathways. Proc. 41st US Rock Mech. Symp., Golden, Colorado, US.
  19. Yuan S-C. and Harrison J.P., 2005. Modelling enhanced fluid flow and fault sealing due to fracturing in heterogeneous rocks. Proc. 11thInt. Conf. IACMAG: Torino, Italy.
  20. Hudson J.A. and Harrison J.P., 2004. The rock property information required from a site investigation. Proc. ISRM Int. Symp. Eurock 2004: Salzburg, Austria.
  21. Rasouli V. and Harrison J.P., 2004. A comparison of linear profiling and an in-plane method for the analysis of rock surface geometry. SinoRock 2004: Proc. Int. Symp. Rock Mech., Three Gorges Project, Hubei, China.
  22. Yuan S-C. and Harrison J.P., 2004. Numerical modelling of progressive damage and associated fluid flow using a hydro-mechanical local degradation approach. SinoRock 2004: Proc. Int. Symp. Rock Mech., Three Gorges Project, Hubei, China.
  23. Harrison J.P. and Hudson J.A., 2003. Visualising and understanding the stress path for rock mechanics modelling and testing, and rock engineering design. Proc. 10th ISRM Congress, Johannesburg, South Africa.
  24. Hudson J.A. and Harrison J.P., 2003. Matching numerical methods to rock engineering problems: a summary of the key issues. Proc. 10thISRM Congress, Johannesburg, South Africa.
  25. Rasouli V. and Harrison J.P., 2003. Is it wavy or rough? Proc. 10th ISRM Congress, Johannesburg, South Africa.
  26. Harrison J.P. and Hudson J.A., 2002. A new method of visualising integrated kinematic and mechanical stability analyses of rock slopes. Proc. 2nd. Int Cong. New Dev. in Rock Mech. and Rock Eng., Shenyang, China.
  27. Hudson J.A. and Harrison J.P., 2002. Principles of the stress path and its visualisation for rock mechanics and rock engineering. Proc. 2nd. Int Cong. New Dev. in Rock Mech. and Rock Eng., Shenyang, China.
  28. Hudson J.A. and Harrison J.P., 2002. The principles of partitioning rock masses into structural domains for modeling and engineering purposes. Proc. North American Rock Mechanics Symposium 2002, Toronto, Canada.
  29. Lee S.D. and Harrison J.P., 2001. Hydro-mechanical behaviour of a rock fracture. Proc. 38th U.S. Rock Mech. Symp.: Washington D.C, USA.
  30. Rasouli V. and Harrison J.P., 2001. In-plane analysis of fracture surface roughness: anisotropy and scale effect in anisotropy. Proc. 38thU.S. Rock Mech. Symp.: Washington D.C, USA.
  31. Rasouli V. and Harrison J.P., 2001. Is the observational method of roughness determination trustworthy? Proc. ISRM Int. Symp. Eurock 2001: Espoo, Finland.
  32. Velios A. and Harrison J.P., 2001. Laser scanning and digital close range photogrammetry for capturing 3‑d archaeological objects: a comparison of quality and practicality. Proc. Computer Applications to Archaeology 2001 Conference: Gotland, Sweden.
  33. Grenon M., Hadjigeorgiou J., Harrison J.P. and Banas R., 2000. An Investigation of Drift Stability in Moderately Jointed Rock Masses. Proc. North American Rock Mechanics Symposium 2000.
  34. Fang Z. and Harrison J.P., 2000. Modelling the compressive fracture of brittle rocks: applications to the progressive failure of rock structures. Eurock 2000: Proc. ISRM Int. Symp., Aachen, Germany.
  35. Lee S.D. and Harrison J.P., 2000. Coupled hydro‑mechanical behaviour of jointed rock masses under normal and shear displacement. Eurock 2000: Proc. ISRM Int. Symp., Aachen, Germany.
  36. Rasouli V. and Harrison J.P., 2000. Scale effect, anisotropy and directionality of discontinuity surface roughness. Eurock 2000: Proc. ISRM Int. Symp., Aachen, Germany.
  37. Fang Z. and Harrison J.P., 1999. Improved stability of underground openings through the use of stiffness‑controlled yield pillars. Proc. 9thInt. Congress ISRM, Paris.
  38. Kostakis K. and Harrison J.P., 1999. Experimental and mathematical simulations of gas bubble and water flow through rock fractures, International Conference on the Dynamics of Fluids in Fractured rocks: concepts and recent advances, Lawrence Berkeley Laboratory, San Francisco, February 1999.
  39. Heath S.M., Hodrien R.C., Kostakis K. & Harrison J.P., 1998. Underground Storage of Natural Gas in Unlined Hard Rock Caverns, EUROCK ‘98.
  40. Kostakis K., Harrison J.P. and Heath S.M., 1998. Gas Bubble Formation at The Entrance of Natural Rock Fractures, EAGE/LPS/SPE Petroleum Geosciences Conference, Imperial College, Paper 1, 20-21 April 1998. 
  41. Kostakis K. and Harrison J.P., 1997. Transport of Gas Bubbles through Water-Filled Rock Fractures, Proc. British Geological Society Conference on Geoenvironmental Engineering - Contaminated Ground: Fate of pollutants and remediation, p. 205-210.
  42. Kostakis K. and Harrison J.P., 1997. Laboratory investigations of two‑phase flow in a single rough fracture. Proc. Int. Symp. Eng. Geol. and the Environment, Athens. Balkema: Rotterdam.
  43. Reid T.R and Harrison J.P., 1997. Automated tracing of rock mass discontinuities from digital images. International Journal of Rock Mechanics and Mining Sciences, Vol.34 No.3/4 April/June 1997. Extended abstract.
  44. Reid T.R and Harrison J.P., 1997. Automated tracing of rock mass discontinuities from digital images. Proceedings 36th US Symposium on Rock Mechanics. CD-ROM. New York, USA. Pergamon.
  45. Ferrero A.M., Harrison J.P. and Scioldo G., 1996. Evaluation of sliding instability of safety using fuzzy analysis of discontinuity orientation. Eurock ’96: Proc. ISRM Int. Symp., Torino, Italy.
  46. Kostakis K., Harrison J.P. and Young A.T., 1996.  Investigation of two‑phase flow in a single rough fracture. Eurock ’96: Proc. ISRM Int. Symp., Torino, Italy.
  47. Reid T.R. and Harrison J.P., 1996. Development of a system for the automatic construction of discontinuity trace maps and discontinuity measurements from digital images. Eurock ’96: Proc. ISRM Int. Symp., Torino, Italy.
  48. Wenner D.H. and Harrison J.P., 1996. Techniques to cope with uncertain parameters in geomechanics on different levels of information. Eurock ’96: Proc. ISRM Int. Symp., Torino, Italy.
  49. Ferrero A.M., Giani G.P., Kapenis A. and Harrison J.P., 1995. Theoretical and experimental study on geometric instability of pillars in discontinuous rock. Proc. 8th Int. Cong. Rock Mech., Tokyo, Japan. Rotterdam: Balkema.
  50. Harrison J.P., Del Greco O. and Ferrero A.M., 1994. Comparison of different methods for the study of rock mass geometry: a case study. Proc. Cong. Italo‑Brasiliano di Ing. Min., Verona, Italy.
  51. Leal Filho L. deS., Owen D.B., Harrison J.P. and deTomi G., 1994. The integration of rock mechanics and water flow for engineering decision making. Proc. Cong. Italo‑Brasiliano di Ing. Min., Verona, Italy.
  52. Harrison J.P. and Goodfellow R.J.F., 1992. Effect of scale on roughness anisotropy and magnitude. Proceedings of the Second International Workshop on Scale Effects in Rock Masses, Lisbon, Portugal.
  53. Harrison J.P., 1992. Fuzzy objective functions applied to the analysis of discontinuity orientation data. ISRM Symposium: Eurock ’92, Chester, U.K.
  54. Harrison J.P. and Hudson J.A., 1989. Applications of modern rock mechanics principles to the design and analysis of large open pits and associated structures. Proc. Conf. Extractive Industry Geology, Birmingham, U.K.

Books and book contributions

  • Harrison, J.P., 2011. Mine Subsidence. In: SME Mining Engineering Handbook 3rd. edition (Peter Darling, ed.), Society for Mining, Metallurgy, and Exploration, Inc..
  • Harrison J.P., 2004. Rock Mechanics, in Encyclopaedia of Geology (Richard C. Selley, L. Robin M. Cocks and Ian R. Plimer, eds.), Elsevier, Oxford.
  • Harrison J.P. and Hudson J.A., 2000. Engineering Rock Mechanics: Illustrative Worked Examples. Elsevier Science.
  • Hudson J.A. and Harrison J.P., 1997. Engineering Rock Mechanics: an Introduction to the Principles. Elsevier Science.

Invited Conference Papers

  • Harrison J.P., 2012. Rock engineering, uncertainty and Eurocode 7: implications for rock mass characterisation. Proc. XIV Ciclo di conferenze di meccanica e ingegneria delle rocce (eds. Barla G., Barla M., Ferrero A.M., Rotonda T.). Torino, Italy, 21-21 November 2012. Torino, Italy: Celid.
  • Harrison J.P., 2012. Progressive mechanical breakdown of intact rock: the degradation model, applications to mine pillars and petroleum wellbores. Proc. 21st Canadian Rock Mech. Symp., Edmonton, Canada.
  • Harrison J.P., 2008. Application of the elemental degradation approach to problems in rock engineering. Proc. 12th Int. Conf. IACMAG. Goa, India.
  • Harrison J.P., 2005. Characterisation of discontinuous rock masses and modelling of flow in fractures. Proc. 11th Int. Conf. IACMAG: Torino, Italy.
  • Harrison J.P., 2004. New approaches to modelling and characterisation of fracture flow. 2nd Iranian Rock Mechanics Conference, Tehran, Iran.
  • Harrison J.P., 2004. A local degradation approach to the modelling of brittle fracture of rock: laboratory and engineering scale examples.Conferenze di Meccanica e Ingegneria delle Rocce, Torino, Italy.
  • Harrison J.P., 2002. Discontinuum characterisation and modelling of groundwater flow. Conferenze di Meccanica e Ingegneria delle Rocce, Torino, Italy.
  • Harrison J.P., 2002. Pragmatism, fracture geometry, and rock engineering. Stiftelsen Svensk Bergteknisk Forskning: Bergmekanikdag 2002, Stockholm, Sweden.

Book Reviews

  • Engineering Geology (2007, 2nd ed.). Bell F.G. Oxford: Butterworth‑Heinemann. Review published in Géotechnique, 2008, 58, 7, p.613.
  • Design Analysis in Rock Mechanics (2006). Pariseau W.G. Taylor & Francis, London. Review published in: Int. J. Rock Mech., 2007, 44, 8 , pp.1173‑1174.
  • Clay materials used in construction (2006). Reeves G.M., Sims I. and J. C. Cripps (eds.), Geological Society of London. Review published in: Geotechnique, 2008, 58, 1, p.78.
  • Rock fracture mechanics: principles, design and applications (1992). Whittaker B.N., Singh R.N and Sun G., Elsevier. Review published in: Geotechnique, 1994, 44, 3, pp.566‑567.