Planning and Execution of Rock Blasting Adjacent to Tunnels
2009 (English)In: Environmental Vibrations: Prediction, Monitoring, Mitigation and Evaluation, VOLS I AND II / [ed] H. Xia & H. Takemiya, 2009, 749-756 p.Conference paper (Refereed)
Prediction and monitoring of vibrations from rock blasting is of practical importance. Damage to rock tunnels caused by blasting is fundamentally different to that of conventional buildings. Different damage mechanisms are discussed as well as methods to monitor the development of cracks by analysis of frequency content. For the assessment of the damage potential it is essential to understand wave propagation in rock and the dynamic response of cavities to vibration excitation. Vibration frequency and wavelength in relation to the size of the cavity are important parameters. Vibration amplification of a circular tunnel to a plane wave is analyzed and guidelines given for practical design applications. Filtering the vibration signal, which is often required in national standards, car. give misleading results for tunnels in rock.
Place, publisher, year, edition, pages
2009. 749-756 p.
rock blasting, tunnels, damage criteria, vibration frequency, standards, vibration monitoring
IdentifiersURN: urn:nbn:se:kth:diva-53079ISI: 000275622200126ISBN: 978-7-03-025765-9OAI: oai:DiVA.org:kth-53079DiVA: diva2:468871
4th International Symposium on Environmental Vibrations, Beijing, China, October 28-30, 2009
QC 201201092011-12-212011-12-212012-01-09Bibliographically approved