Gabriel Walton

Assistant Professor, Geology and Geological Engineering

Gabriel Walton


  • Ph.D. in Geomechanics, Department of Geological Sciences and Geological Engineering, Queen’s University, 2014
  • B.A.Sc. in Geological Engineering, Department of Geological Sciences and Geological Engineering, Queen’s University, 2011

Research Interests

  • Rock Mechanics
  • Numerical modelling of slopes and underground works
  • Rockmass characterization
  • Applications of geophysics and remote sensing in Geological Engineering

Recent Journal Publications (*Indicates Student Author Advised by G. Walton)

  • Walton, G. Initial guidelines for the selection of input parameters for cohesion-weakening-friction-strengthening (CWFS) analysis of excavations in brittle rock. Tunnelling and Underground Space Technology, 84, 189-200. DOI: 10.1016/j.tust.2018.11.019
  • Hu, X., Fang, Y., Walton, G., and He, C. 2019. Analysis of the behaviour of a novel support system in an anisotropically jointed rock mass. Tunnelling and Underground Space Technology, 83, 113-134. DOI: 10.1016/j.tust.2018.09.028
  • Young, M.*, Walton, G., & Holley, E. 2018. Investigation of factors influencing roof stability at a Western US longwall coal mine. International Journal of Mining Science and Technology. DOI: 10.1016/j.ijmst.2018.11.019
  • Sinha, S.*, and Walton, G. Numerical analyses of pillar behavior with variation in yield criterion, dilatancy, rock heterogeneity and length to width ratio. Journal of Rock Mechanics and Geotechnical Engineering. DOI: 10.1016/j.jrmge.2018.07.003
  • Walton, G., Fotopoulos, G., and Radovanovic, R. 2018. Extraction and Comparison of Spatial Statistics For Geometric Parameters of Sedimentary Layers from Static and Mobile Terrestrial Laser Scanning Data. Environmental & Engineering Geoscience. DOI: 10.2113/EEG-2068
  • Shirole, D.*, Walton, G., Ostrovsky, L., Masoumi, H., and Hedayat, A. 2018. Non-linear ultrasonic monitoring of damage progression in disparate rocks. International Journal of Rock Mechanics and Mining Sciences, 111, 33-44. DOI: 10.1016/j.ijrmms.2018.08.010
  • Boyd, L.*, Trainor-Guitton, W., and Walton, G. Assessment of rock unit variability  through use of spatial variograms. Engineering Geology, 233, 200-212. DOI: 10.1016/j.enggeo.2017.12.012
  • Cowie, S.*, and Walton, G. The effect of mineralogical parameters on the mechanical properties of granitic rocks. Engineering Geology, 240, 204-225. DOI: 10.1016/j.enggeo.2018.04.021
  • Fang, Y., Yao, Z., Walton, G., and Fu, Y. 2018. Liner Behavior of a Tunnel Constructed Below a Caved Zone. KSCE Journal of Civil Engineering, 1-10. DOI: 10.1007/s12205-018-1162-8
  • Kim, B. H., Walton, G., Larson, M. K., and Berry, S. 2018. Experimental study on the confinement-dependent characteristics of a Utah coal considering the anisotropy by cleats. International Journal of Rock Mechanics and Mining Sciences, 105, 182-191. DOI: 10.1016/j.ijrmms.2018.03.018
  • Sinha, S.*, and Walton, G. A progressive S-shaped yield criterion and its application to rock pillar behavior. International Journal of Rock Mechanics and Mining Sciences, 105, 98-109. DOI: 10.1016/j.ijrmms.2018.03.014
  • Walton, G., Alejano, L. R., Arzua, J., and Markley, T.* 2018. Crack Damage Parameters and Dilatancy of Artificially Jointed Granite Samples Under Triaxial Compression. Rock Mechanics and Rock Engineering, 51(6), 1637-1656. DOI: 10.1007/s00603-018-1433-1
  • Walton, G., Diederichs, M. S., Weinhardt, K., Delaloye, D., Lato, M. J., and Punkkinen, A. 2018. Change detection in drill and blast tunnels from point cloud data. International Journal of Rock Mechanics and Mining Sciences, 105, 172-181. DOI: 10.1016/j.ijrmms.2018.03.004
  • Walton, G., Kim, E., Sinha, S.*, Sturgis, G., and Berberick, D. 2018. Investigation of shaft stability and anisotropic deformation in a deep shaft in Idaho, United States. International Journal of Rock Mechanics and Mining Sciences, 105, 160-171. DOI: 10.1016/j.ijrmms.2018.03.017
  • Walton, G. Scale effects observed in compression testing of stanstead granite including post-peak strength and dilatancy. Geotechnical and Geological Engineering, 1-21. DOI: 10.1007/s10706-017-0377-7
  • Walton, G., Hedayat, A., Kim, E., and Labrie, D. 2017. Post-yield strength and dilatancy evolution across the brittle-ductile transition in Indiana Limestone. Rock Mechanics and Rock Engineering, 50(7), 1691-1710. DOI: 10.1007/s00603-017-1195-1
  • Quinones, J., Arzua, J., Alejano, L.R., Garcia-Bastante, F., Mas Ivars, D., and Walton, G. Analysis of size effects on the geomechanical parameters of intact granite samples under unconfined conditions. Acta Geotechnica, 12(6), 1229-1242. DOI: 10.1007/s11440-017-0531-7
  • Hedayat, A. and Walton, G. Laboratory Determination of Rock Fracture Shear Stiffness Using Seismic Wave Propagation and Digital Image Correlation. Geotechnical Testing Journal, 40(1), 92-106. DOI:
  • Walton, G., Mills, G., Fotopoulos, G., Radovanovic, R., and Stancliffe, R. P. W. 2016. An approach for automated lithological classification of point clouds. Geosphere, 12(6), 1833-1841. DOI: doi:10.1130/GES01326.1
  • Walton, G., Diederichs, M., Punkkinen, A., and Whitmore, J. 2016. Back analysis of a pillar monitoring experiment at 2.4 km depth in the Sudbury Basin, Canada. International Journal of Rock Mechanics and Mining Sciences, 85, 33-51. DOI:
  • Walton, G. and Diederichs, M.S. 2015. A mine shaft case study on the accurate prediction of yield and displacements in stressed ground using lab-derived material properties. Tunnelling and Underground Space Technology. DOI: 1016/j.tust.2015.04.010
  • Walton, G., Diederichs, M.S., Punkkinen, A. 2015. A study on the influence of constitutive model choice on stress path and the development of yield in deep mine pillars – experience from the Creighton Mine, Sudbury, Canada. Eurock 2015. Salzburg, Austria.
  • Walton, G. and Diederichs, M.S. 2015. A new model for the dilation of brittle rocks based on laboratory compression test data with separate treatment of dilatancy mobilization and decay. Geotechnical and Geological Engineering. DOI: 10.1007/s10706-015-9849-9
  • Walton, G. and Diederichs, M.S. 2015. Dilation and post-peak behaviour inputs for practical engineering analysis. Geotechnical and Geological Engineering. DOI: 1007/s10706-014-9816-x
  • Walton, G., Lato, M., Anschütz, H., Perras, M.A., and Diederichs, M.S. 2015. Geophysical detection of fractures, fractures zones, and rock damage in a hard rock excavation – experience from the Äspö Hard Rock Laboratory in Sweden. Engineering Geology. DOI: 1016/j.enggeo.2015.07.010
  • Delaloye, D., Diederichs, M. S., Walton, G., and Hutchinson, J. 2015. Sensitivity testing of the newly developed elliptical fitting method for the measurement of convergence in tunnels and shafts.Rock Mechanics and Rock Engineering, 48(2), 651-667. DOI: 1007/s00603-014-0566-0
  • Walton, G., Delaloye, D., and Diederichs, M. S. 2014. Development of an elliptical fitting algorithm to improve change detection capabilities with applications for deformation monitoring in circular tunnels and shafts.Tunnelling and Underground Space Technology, 43, 336-349. DOI:
  • Walton, G., Diederichs, M.S., Alejano, L.R., and Arzua, J. 2014. Verification of a lab-based dilation model for in-situ conditions using continuum models. Rock Mech. and Geotech. Eng. DOI: 10.1016/j.jrmge.2014.09.004
  • Walton, G., Arzua, J., Alejano, L.R., Diederichs, M.S. 2014. A laboratory-testing based study on the strength, deformability, and dilatancy of carbonate rocks at low confinement. Rock Mech. And Rock Eng. DOI: 10.1007/s00603-014-0631-8
  • Arzua, J., Alejano, L., Walton, G. Strength and dilation on jointed granitic samples during servo-controlled triaxial tests – a potential analogue for rock masses at the lab scale. Int. J. of Rock Mech. and Min. Sci., 69, 93-104. DOI: 10.1016/j.ijrmms.2014.04.001

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