Finite element simulation of shotcrete exposed to underground explosions
2012 (English)In: Nordic Concrete Research, ISSN 0800-6377, no 45, 59-74 p.Article in journal (Refereed) Published
An elastic finite element model is used tosimulate theinducedstress waves from blasting, propagating in rock towards shotcrete on a tunnel wall. Due to the inhomogeneous nature of the rock, the stress wavesattenuate onitsway from the point of explosiontowardsthe shotcrete on the rock surface. Material damping for the rock-mass is estimated from in-situ measurements. The vibration resistance of the shotcrete-rock support system depends on the material properties of the shotcrete. Age-dependent material properties are varied to investigate the behaviour of young shotcrete subjected to blast loading. Finally, finite element analysis results are presented and verified through comparison with other numerical models, measurements and observations.
Place, publisher, year, edition, pages
Nordic Concrete Federation , 2012. no 45, 59-74 p.
Shotcrete, rock, v ibration, blasting, finite element analysis
IdentifiersURN: urn:nbn:se:kth:diva-93715OAI: oai:DiVA.org:kth-93715DiVA: diva2:517563
QC 201602202012-04-242012-04-242016-02-20Bibliographically approved