Project C9040 - 'Structure Response to Blast Vibration', funded by the Australian Coal Association Research Program (ACARP), involved the investigation of the structural response from blast vibration of three houses of brick veneer construction subject to a wide range of ground vibration levels. This paper summarises the findings of a house subject to vibration levels up to 220 mm/s (8.7 in/s). Damage attributable to blast vibration was not observed until vibration levels exceeded 70 mm/s (2.8 in/s). The investigation has shown that strains, due to blast vibration levels that are within currently enforced environmental limits of 5 mm/s (0.2 in/s) to 10 mm/s (0.4 in/s), were 1-10% of damage levels. The results of the investigation were consistent with authoritative overseas studies, including those conducted by the U.S. Bureau of Mines (USBM). A rational method has been developed for assessing the contribution of vibration to damage by determining the order of magnitude of the dynamic strains, and comparing these with the strains at which the building materials fail, and the strains due to natural events.
Proceedings of the 29th Annual Conference on Explosives and Blasting Technique, Nashville, Tennessee, United States, 02-05 February 2003,
Vol. II, pp. 223-230