Details of Grant 

EPSRC Reference:	GR/S04970/01
Title:	Numerical modelling and analysis of fractured rock mass strength and deformability
Principal Investigator:	Pine, Professor RJ
Other Investigators:	Coggan, Professor JS
Researcher Co-Investigators:	Professor DR Owen
Project Partners:	Cementation Skanska Limited Golder Associates (UK) Ltd OMYA UK Ltd Rio Tinto Rockfield Software Ltd
Department:	Camborne School of Mines
Organisation:	University of Exeter
Scheme:	Standard Research (Pre-FEC)
Starts:	01 January 2003	Ends:	31 December 2005	Value (£):	117,705
EPSRC Research Topic Classifications:	Ground Engineering Mining & Minerals Extraction
EPSRC Industrial Sector Classifications:	Manufacturing
Related Grants:	GR/S04987/01
Panel History:
Summary on Grant Application Form
Rock mass strength is a crucial factor in many civil, mining and petroleum engineering projects. Current approaches to estimate failure in rock masses include characterisation/classification and finite/distinct element models. Classification-based methods have limitations such as: Similar ratings may be obtained with various combinations of parameter values, leading to different behaviour prediction; Such methods are not directly related to relative scales; The persistence of joints is not considered in sufficient detail; Estimates cannot be extended safely beyond available empirical data; Derived properties assume uniform isotropic behaviour. Continuum finite element models, on the other hand, are particularly deficient in predicting scale effects. Distinct element methods are limited by relatively poor description of the physics of rock mass deformation and failure due to the constraints of predefined geometries and continuous joints. The proposed research aims to improve the understanding of the behaviour of fractured rock masses through the development of a novel numerical/ computational model based on a 3-D finite/discrete element scheme. The model will be based on realistic constitutive models of the mechanisms underlying strength, deformability and failure in rock masses in conjunction with realistic automated 3-D prefractured geometry definition. Numerical and field experiments will be undertaken to validate the approach. Eventually an industrial standard numerical decision support system will be established to provide a unique insight into the risks due to joint systems and mass strength variability.
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Organisation Website:	http://www.ex.ac.uk