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Characteristics of surface ground motions induced by blasts in jointed rock mass

โœ Scribed by Hong Hao; Yaokun Wu; Guowei Ma; Yingxin Zhou


Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
881 KB
Volume
21
Category
Article
ISSN
0267-7261

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The propagation characteristics of blast-induced shock waves in a jointed rock mass have been monitored and studied. Accelerometers were set up on a rock surface along three lines, at 0ะŠ, 45ะŠ and 90ะŠ with respect to the orientation of the predominant joint strikes. Cylindrical charges were detonated

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Current codes of practice in assessing the blast ground motion effect on structures are mainly based on the ground peak particle velocity (PPV) or PPV and the principal frequency (PF) of the ground motion. PPV and PF of ground motion from underground explosions are usually estimated by empirical for

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Studies of structural responses and damage to high-frequency blast motion are very limited. Current practice uses some empirical allowable ground vibration limits in assessing structural performance. These empirical limits overlook the physical parameters that govern structural response and damage,