Laboratory of Mine Design

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Relational materials database

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Some new developments on the representation and standardization of rock mechanics data: From the laboratory to the full scale project

G. Exadaktylos, P. Liolios & G. Barakos

Department of Mineral Resources Engineering, Technical University of Crete, Chania, Greece


An effort has been made to create a Rock Mechanics Database that may be used in the future as a tool for the design of excavations in rocks. This is the reason it was designed to be web-driven through the UCIS platform of TUNCONSTRUCT (Technology Innovation in Underground Construction, Its main feature is that it is hierarchical, that is, it starts from the mineralogical-microstructural characterization and reduced raw lab mechanical testing data, then it goes to the data referring to the behavior of the rock in loading and unloading-reloading, as well as to post-peak behavior, separately, after it goes to the identification of elasticity moduli, then to plasticity and damage properties of the rock according to an appropriate constitutive mechanical model, and so on. In order to achieve this for different tests on the same rock - that may be performed by different laboratories - some kind of standardization of procedures is required although not significant departure from established ISRM Standardization Procedures of basic rock mechanics tests is being made. These procedures are discussed here. The next thing to consider is how to upscale the parameters of the intact rock identified from lab testing to the real life scale of the project.

Invited paper in the, 11th ISRM Congress: Rock Mechanics Data: Representation and Standardisation, D. Toll Chairman, July 12th 2007, Lisbon Congress Centre, Lisbon Portugal.