ABSTRACT
Ground Support in Mining and Underground Construction-Villaescusa & Potvin (eds.) © 2004 Taylor & Francis Group, London, ISBN 90 5809 640 8
ABSTRACT: The performance of reinforcement systems when subjected to dynamic loading may be substantially different to the performance measured in quasi-static tests. In order to investigate the extent of the differences in behaviour, a new testing facility has been developed to apply dynamic loads to reinforcement system specimens set up in double embedment configurations. A computer simulation of the test facility has been developed to facilitate test data processing and interpretation. The tests are monitored electronically and by high speed digital video. The results from the various forms of instrumentation are filtered and then combined and analysed. The analyses enable the energy absorption characteristics of different reinforcement systems to be characterised. An example is presented of a simulation and test on a reinforcement system. The ability to apply multiple impacts to simulate repetitive loadings from seismic events is one major asset of the testing facility.
