Simulating ground-support interaction using advanced numerical methods

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Numerical simulations are widely adopted in the design of several types of rock structures, including tunnels, caverns, rock cuts, and open pit and underground mines. Geomechanica Inc. (the industry partner) develops simulation software and provides consulting services for rock engineering applications. Presently, Geomechanica is focusing on the development of an advanced simulation tool based on a hybrid finite-discrete element method (FEMDEM), which allows a realistic representation of rock mass deformation and fracturing processes. While state-of-the-art from a material behaviour perspective, this modelling software and the associated computational algorithms are not currently consistent with classical rock-support modelling methodologies and such, currently falls short in accurately capturing the application of rock reinforcement techniques, such as rock bolts and cables. An important advance is needed to adapt this simulation process to accurately represent rock-support interaction. Rock reinforcement is often used in civil and mining applications in order to improve the strength and deformational behaviour of a rock mass and represents a key engineering component that every practical rock mechanics model should incorporate. The current modelling approach has already proved to qualitatively and quantitatively simulate rock deformation and failure processes for rock engineering applications. This project proposes to explore different methodologies that could further improve the quality and accuracy of their simulation analysis when modelling reinforced rock masses. The ultimate goal is to obtain a mechanically-based rock-reinforcement interaction model for its hybrid finite-discrete element code and to develop a simulation tool that could be used in practical rock engineering applications such as the design of underground excavations and rock slopes. The outcome of this project will contribute to strengthen a Canadian company's status in simulation-based rock engineering and will strengthen and reinforce Canada's leading role in providing such expertise to clients around the globe.