Drift reinforcement design based on discontinuity network modelling

Authors: Grenon, MartinHadjigeorgiou, John
Abstract: The results of structural mapping are used to generate 3-D joint networks. By introducing a virtual excavation in the generated rock mass it is possible to identify all wedges that can potentially be defined at the exposed surfaces of the excavation. The number and size of these wedges are controlled by the geometry and orientation of the excavation, as well as the properties of the generated joint sets and individual random joints. Consequently it is possible to determine the stability of every individual wedge along the span of an excavation. The influence of various reinforcement strategies (type of bolts, reinforcement patterns, mesh, etc.) on the stability of an excavation is quantified. This is a prelude to an economic analysis whereby the costs associated with different stabilization techniques are assessed. This methodology is illustrated by means of three case studies in a polymetallic underground mine in the Canadian Shield.
Document Type: Article de recherche
Issue Date: 8 May 2003
Open Access Date: 11 January 2019
Document version: AM
Permalink: http://hdl.handle.net/20.500.11794/33136
This document was published in: International journal of rock mechanics and mining sciences, Vol.40 (6), 833-845 (2003)
https://doi.org/10.1016/S1365-1609(03)00044-3
Pergamon Press
Alternative version: 10.1016/S1365-1609(03)00044-3
Collection:Articles publiés dans des revues avec comité de lecture

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