caa a22 4500 477048153 CHVBK 20180405111335.0 cr unu---uuuuu 170330e19960701xx s 000 0 eng 10.1007/BF00877481 doi (NATIONALLICENCE)springer-10.1007/BF00877481 Characteristics of mining tremors within the near-wave field zone [Elektronische Daten] [Józef Dubiński, Grzegorz Mutke] Mining in the Upper Silesian Coal Basin, Poland, induces tremors with magnitudes ranging up to 4.3. The recordings of mining tremors from the near-wave fiel and the far-wave field show different characteristics of ground motion. Knowledge of these characrteristics, has an enormous practical importance when solving the problems of resistance of underground workings against seismic impacts. The near-wave field is characterized by a domination of the high frequency components of motion, and the seismograms often are a single pulse Geomechanical interpretation of them leads to the conclusion that this pulse corresponds to a single exciting force. This fact is also reflected in the rockbursts: the potentially damaging ground motion which is restricted to the seismic source region. The seismometric data have shown that the peak particle velocities from a hypocentral distance of 200-300 m, resulted in more than 3 cm/s. The peak ground velocities appear to be dependent on stress drop Δσ, and peak particle velocities reaching 5 m/s may occur. The computational example proves that in a thick coal seam the pulse with the stress σ=1.8 MPa from the tremor at the short source distance can generate the rockburst. Birkhäuser Verlag, 1996 Mining tremors nationallicence rockburst nationallicence near-wave field nationallicence peak particle velocity nationallicence dynamic load nationallicence Dubiński Józef Central Mining Institute, Plac Gwarków 1, 40-166, Katowice, Poland aut Mutke Grzegorz Central Mining Institute, Plac Gwarków 1, 40-166, Katowice, Poland aut pure and applied geophysics Birkhäuser-Verlag 147/2(1996-07-01), 249-261 0033-4553 147:2<249 1996 147 24 https://doi.org/10.1007/BF00877481 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00877481 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dubiński Józef Central Mining Institute, Plac Gwarków 1, 40-166, Katowice, Poland aut NATIONALLICENCE 700 1- Mutke Grzegorz Central Mining Institute, Plac Gwarków 1, 40-166, Katowice, Poland aut NATIONALLICENCE 773 0- pure and applied geophysics Birkhäuser-Verlag 147/2(1996-07-01), 249-261 0033-4553 147:2<249 1996 147 24 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer