Lectures and Discussions

Task 3 was defined not for modeling coupled THM processes of geological media, but as a forum of lectures and discussions on the state-of-the-art of rock fractures, their constitutive behavior and associated models, theoretical studies and experiments, advances and outstanding issues, and how this knowledge was used in performance and safety assessments for GDRW practice. The forum was conducted as a specific session at each Workshop, with invited internationally well-known scientists who had contributed greatly to the subject area’s scientific progress. All the lectures (see Table 3) and following discussions were greatly appreciated by both the funding organizations and research teams, and helped to broaden the view of the DECOVALEX project participants about the effects of the fractures and fracture systems on the performance and safety assessments of GDRW repositories and other geo-engineering and sciences.

Table 3 Lectures for Task 3 of DECOVALEX II project (1995–1999)
Name Institution Lecture title or subjects Dates and locations
Prof. T. Esaki Kyushu Univ., Fukuoka, Japan Development of a shear-flow coupling test apparatus and some test results of rock joints 8-10 May 1996, Tokyo, Japan
Prof. A. P. S. Selvadurai McGill Univ., Montreal, Canada Radial flow tests on intact and fractured granite cylinders subjected to thermal effects Radial flow tests on intact and fractured granite cylinders subjected to thermal effects
Dr. A. Niemi VTT, Finland Studies on coupled hydromechanical effects in single fractures
Prof. J. Gale Memorial Univ., St. John’s, NF, Canada Relationship between fracture pore structure, roughness, solute velocities and coupled stress-flow response models
Dr. T. Chan AECL, Canada Modeling coupled hydromechanical effects of past and future glaciations
Dr. Y. Tsang LBNL, USA The in-situ heater test at the Yucca Mountain site and T-M modeling 9 December 1997, Berkeley, CA, USA
Prof. D. Pollard Stanford Univ., CA, USA Using analogs to understand coupled T-H-M-C processes in fractured and faulted rock masses: the role of structural geology
Dr. C. Barton UAGS, St. Petersburg, USA Characterization of in-situ rock fracture systems using fractal and other techniques
Prof. F. H. Cornet I.P.G.P. Paris, France Experimental investigations on hydromechanical coupling in fractured rock masses 16 June 1998, Avignon, France
Prof. S. Gentier BRG/DR/GIG, Orleans, France Hydromechanical behavior of a natural fracture under normal and shear stresses
Prof. M. Boulon Univ., Joseph Fourier, Grenoble, France Experimental investigations and hydro-mechanical modeling of natural joints
Prof. A. Niemi KTH, Stockholm, Sweden Simulation of fluid flow in rock fractures 24 May 1999, Kalmar, Sweden
Dr. N. Barton NGI, Oslo, Norway Mechanics of rock joints and discrete modeling for rock engineering
Dr. F. Lanaro KTH, Stockholm, Sweden A random field model for roughness and aperture of rock joints