pure and applied geophysics

, Volume 129, Issue 3–4, pp 309–324 | Cite as

The mechanism of small mining tremors from amplitude inversion

  • Jan Šílený


A method of inverting seismic wave amplitudes from mining tremors is proposed to reveal their mechanism. A simple shear-implosive model of a mechanism is proposed. The shapes of theoretical and observed radiation patterns are compared in the least squares norm and the parameters describing the shear-slip together with the ratio of implosive and shear dislocations are optimized. The efficiency of the method, even in the case of a small number of stations, is demonstrated by applying it to weak mining tremors from two mine regions in Czechoslovakia.

The weak mining tremors are found to be of a predominantly shear mechanism with a clear coincidence of nodal planes to local tectonics, which could imply their tectonic nature.

Key words

Inversion ofP- andS-wave amplitudes weak mining tremors shear-implosive source model 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Båth, M. (1984),Rockburst seismology (Proc. 1st Inc. Congress on Rockbursts and Seismicity in Mines, Johannesburg, 1982, SAIMM, Johannesburg) pp. 7–15.Google Scholar
  2. Brune, J. (1970),Tectonic stress and the spectra of seismic shear waves from earthquakes, J. Geophys. Res.75, 4997–5009.Google Scholar
  3. Buben, J. (1969),Seismic investigation of mining tremors, C. Sci. Diss. Inst. of Geol. and Geotech., Prague, unpublished.Google Scholar
  4. Gibowicz, S. J. (1979),Space and time variations of the frequency-magnitude relation for mining tremors in the Szombierki coal mine in Upper Silesia, Poland, Acta Geophys. Pol.27, 39–49.Google Scholar
  5. Gibowicz, S. J. (1981),The Belchatow, Poland, earthquake of 29 November 1980 and its tectonic and mining associations (Proc. 2nd Int. Symposium on the Analysis of Seismicity and on Seismic Hazard, Liblice, Czechoslovakia, 18–23 May) pp. 170–185.Google Scholar
  6. Gibowicz, S. J. (1984),The mechanism of large mining tremors in Poland (Proc. 1st Int. Congress on Rockbursts and Seismicity in Mines, Johannesburg, 1982, SAIMM, Johannesburg) pp. 17–28.Google Scholar
  7. Gibowicz, S. J., Cichowicz, A., andDybel, T. (1977),Seismic moment and source size of mining tremors in Upper Silesia, Poland, Acta Geophys. Pol.25, 201–218.Google Scholar
  8. Gibowicz, S. J., Bober, A., Cichowicz, A., Droste, Z., Dychtowicz, Z., Hordejuk, J., Kazimierzyk, M., andKijko, A. (1979),Source study of the Lubin, Poland, tremor of 24 March 1977, Acta Geophys. Pol.27, 3–38.Google Scholar
  9. Haskell, N. (1964),Total energy and energy spectral density of elastic wave radiation from propagating faults, Bull. Seism. Soc. Am.54, 1811–1842.Google Scholar
  10. James, F. andRoos, M. (1975),Function minimization and error analysis, Computer Physics Communications10, 343–367.Google Scholar
  11. Jech, J. (1988),Seismic tomography in the Ostrava-Karviná mining region, Pure Appl. Geophys.129, 3/4, 597–608.Google Scholar
  12. Kisslinger, C. (1976),A review on theories of mechanisms of induced seismicity, Eng. Geol.10, 85–98.Google Scholar
  13. Knotek, S. andVajter, Z. (1984),Seismic activity of eastern part of Ostrava-Karviná Region (in Czech), Seismological Centrum of the ČSA Mine, Karviná Mines, unpublished.Google Scholar
  14. Konečný, P., Knejzlík, J., Kozák, J., andVeselý, M. (1987)The development of mining-induced seismicity (Proc. Int. Congress on Rock Mechanics, Montreal) in press.Google Scholar
  15. Kozák, J., Rudajev, V., andŠílený, J. (1985),Possible model of rockburst mechanism with implosive component, Publs. Inst. Geoph. Pol. Acad. Sci.M-6, 7–19.Google Scholar
  16. Madariaga, R. (1976),Dynamics of an expanding circular fault, Bull. Seism. Soc. Am.66, 639–666.Google Scholar
  17. McGarr, A. (1984),Some applications of seismic source mechanism studies to assessing underground hazard (Proc. Ist Int. Congress on Rockbursts and Seismicity in Mines, Johannesburg, 1982, SAIMM, Johannesburg), pp. 199–208.Google Scholar
  18. McGarr, A., Green, R. W. E., andSpottiswoode, S. M. (1981),Strong ground motion of mine tremors: Some implications for near-source ground motion parameters, Bull. Seism. Soc. Am.71, 295–319.Google Scholar
  19. Přibyl, A. andRudajev, V. (1969),On mining tremors and their interpretation with respect to influence of rock massif geology in Kladno Mine Region (in Czech) (Proc. Int. Symp. on Mine Geodesy, Geology and Geometry of Raw Material Deposits, Prague).Google Scholar
  20. Report of the Geophys. Inst. Czechosl. Acad. Sci. (1987),Space location of mining tremor foci on the basis of observations of deep stations in Karviná Part of Ostrava-Karviná Region, Prague, unpublished.Google Scholar
  21. Roček, V. andRudajev, V. (1976),The rock bursts in the Kladno region and possibilities of their prevention (in Czech, with English abstract), Publs. Inst. Geophys. Pol. Acad. Sci.97, 3–14.Google Scholar
  22. Rudajev, V. (1986),Seismic manifestation of mining tremors (in Czech), D. Sci. Diss., Inst. of Geol. and Geotech., Prague, unpublished.Google Scholar
  23. Smith, R. B., Winkler, P. L., Anderson, J. G., andScholz, Ch. H. (1974),Source mechanisms of microearthquakes associated with underground mines in Eastern Utah, Bull. Seism. Soc. Am.64, 1295–1317.Google Scholar
  24. Spottiswoode, S. M. andMcGarr, A. (1975),Source parameters of tremors in a deep-level gold mine, Bull. Seism. Soc. Am.65, 93–112.Google Scholar
  25. Šiška, L. andKonečný, P. (1983),Longwall mining of coal from seams liable to rock bursts — experiences in Ostrava-Karviná coal basin, Czechoslovakia, J. of Mines, Metals and Fuels, Spec. Number on Update on Longwall Mining-Evolving Trends, 363–367.Google Scholar

Copyright information

© Birkhäuser Verlag 1989

Authors and Affiliations

  • Jan Šílený
    • 1
  1. 1.Geophysical InstituteCzechoslovakian Academy of SciencesPraha 4, SpořilovCzechoslovakia

Personalised recommendations