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- Title
Experimental Investigation of Block Fracture Influence on P-Wave Propagation in Block Rock Mass.
- Authors
Kaixing, Wang; Bin, Wu; Yishan, Pan; Khmelinin, A. P.; Chanyshev, A. I.
- Abstract
This article experimentally investigates the characteristics of -wave propagation in block rock mass when blocks fracture transversely and longitudinally. The velocity of -wave, rock block acceleration, kinetic energy, displacement response, and the time–frequency response of rock block were analyzed. The results show that when the rock block fractures, the -wave velocity decreases, the acceleration response duration time increases, and the maximum acceleration and kinetic energy decrease. However, transverse fractures show a more evident decrease in the acceleration and kinetic energy near the fracture area, and longitudinal fractures show a more evident decrease in the displacement amplitude far from the fracture area. On transverse fractures, the dominant frequency of acceleration and kinetic energy leads to a low value near the fracture area, but the dominant frequency of displacement—to a high value. Longitudinal fracture leads to a dominant frequency of block response occurrence time delayed far from the fracture area.
- Subjects
THEORY of wave motion; KINETIC energy; VELOCITY; MINERAL industries; MINES &; mineral resources
- Publication
Journal of Mining Science, 2024, Vol 60, Issue 2, p210
- ISSN
1062-7391
- Publication type
Article
- DOI
10.1134/S1062739124020030