Possible mechanism of rockbursts in coal mines
Purchase on Springer.com
$39.95 / €34.95 / £29.95*
Rent the article at a discountRent now
* Final gross prices may vary according to local VAT.
One of the important questions of rockburst prevention is the understanding of the mechanism of rockburst source. This question can be effectively studied by direct seismic observations in the rockburst regions. For this purpose, the distribution ofP-wave onset signs and the inversion of first motion amplitudes were utilized as the basic method. In such a way the coal mine regions in Poland (Upper Silesia) and in Czechoslovakia (Kladno coal mine district) were studied as part of the Polish-Czechoslovak rockburst investigation project. More than 250 rockburst events were recorded here in the decade 1977–1983, and analyzed. The results of the statistical analysis of these data allow us to formulate and introduce a model of the rockburst source with an implosion component. The suitability of this conception was verified by laboratory simulation conditions; it was confirmed that the seismoactive displacements with a clear implosive component were recorded in the neighbourhood of a stress concentrator weakened by holes. The results of both the field observations and laboratory tests were in good agreement with the theoretically derived radiation patterns for a combined shear-implosive source and also with the theoretical conception of such a source based on real geometrical configurations of mine excavations and tectonic dislocations.
The rockbursts treated exhibit a dominant shear component, the magnitude of the additional implosive component not exceeding 10 percent of the shear component.
- Båth, M. (1984),Rockburst seismology. In Proc. of the 1st International Congress on Rockbursts and Seismicity in Mines, Johannesburg, 1982, SAIMM, Johannesburg, 7–15.
- Brune, J. N. (1970),Tectonic stress and the spectra of seismic shear waves from earthquakes, J. Geophys. Res.75, 4997–5009.
- Brune, J. N. (1971),Tectonic stress and the spectra of seismic shearwaves from earthquakes; correction. J. Geophys. Res.76, 5002.
- Droste, Z. andTeissyre, R. (1974),Analysis of the P-wave signs and the method of determining mechanism and region of shock. Publ. Inst. Geoph. Pol. Acad. Sci.67, 77–87.
- Droste, Z. andTeisseyre, R. (1976),Some cases of the shock mechanism types in the Upper Silesia coal region. Publ. Inst. Geoph. Pol. Acad. Sci.97, 141–155.
- Gibowicz, S. J. (1963),Magnitude and energy of subterranean shocks in Upper Silesia. Studia Geoph. et Geod.7, 1–19.
- 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.
- 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.
- Gibowicz, S. J., Bober, A., Cichowicz, A., Droste, Z., Dychtowicz, Z., Hordejuk, J., Kazimierczyk, M. andKijko, A. (1979),Source study of the Lubin, Poland, tremor of 24 March 1977. Acta Geophys. Pol.27, 3–38.
- Gibowicz, S. J., Cichowicz, A., Bober, A. andKazimierczyk, M. (1980),Calculations of seismic energy of mining tremors in the Lubin copper mine, Polane. Acta Montana55, 15–36.
- Gibowicz, S. J., Droste, Z., Guterch, B., andHordejuk, J. (1981),The Belchatow, Poland, earthquakes of 1979 and 1980 induced by surface mining Eng. Geol.17, 257–271.
- Gibowicz, S. J. (1984),The mechanism of large mining tremors in Poland. In Proc. of the 1st International Congress on Rockbursts and Seismicity in Mines, Johannesburg, 1982, SAIMM, Johannesburg, 17–28.
- Grösser, H., Poppitz, R. andKnoll, P. (1979),The problem of the focal mechanism of seismic events in mining regions. Acta Montana50, 39–41.
- Kozák, J., Rudajev, V. andŠílený, J. (1985),Possible model of rockburst mechanism with implosion component. Publ. Inst. Geoph. Pol. Acad. Sci.M-6(176), 7–20.
- Kozák, J., andŠílený, J. (1985),Seismic events with non-shear source component I: shallow earthquakes with possible tensile source component. Pure Appl. Geophys.123, 1–15.
- Madariaga, R. (1976),Dynamics of an expanding circular fault. Bull. Seism. Soc. Am.54, 639–666.
- McGarr, A. (1971),Violent deformation of rock near deep-level, tabular excavations: seismic events. Bull. Seism. Soc. Am.61, 1453–1466.
- Rudajev, V. andŠílený, J. (1985),Seismic event with non-shear source component II: rockburst with implosive source component. Pure Appl. Geophys.123, 17–25.
- Smith, R. B., Wikler, P. L., Anderson, J. G. andScholz, Ch. H. (1974),Source mechanism of micro-earthquakes associated with underground mines in eastern Utah. Bull. Seism. Soc. Am.64, 1295–1317.
- Spottiswoode, S. M. andMcGarr, A. (1975),Source parameters of tremors in a deep-level gold mine. Bull. Seism. Soc. Am.65, 93–112.
- Šílený, J., Rudajev, V., Lokajíček, T. andKozák, J. (1985),Implosive rockbursts and their laboratory simulation. Acta Montana71, 33–48.
- Teisseyre, R. andDmowska, R. (1975),Conjugated earthquake mechanisms. Publ. Inst. Geoph. Pol. Acad. Sci.93, 49–53.
- Teisseyre, R. (1980a),Some remarks on the source mechanism of rockburst in mines and on possible source extension. Acta Montana55, 7–14.
- Teisseyre, R. (1980b),Earthquake premonitary sequence-dislocation processes and fracturing. Bull. Geof. Teor. Appl. XXII,88, 245–254.
- Teisseyre, R. (1985a),New earthquake rebound theory. Phys. Earth. Planet. Inst. (in print).
- Teisseyre, R. (1985b),Creep flow earthquake rebound: system of internal stress evolution. Acta Geophys. Pol. XXXIII.
- Trifunac, M. D. (1972),Tectonic stress and the source mechanism of the Imperial Valley, California, Earthquake of 1940. Bull. Seism. Soc. Am.62, 1283–1302.
- Possible mechanism of rockbursts in coal mines
pure and applied geophysics
Volume 124, Issue 4-5 , pp 841-855
- Cover Date
- Print ISSN
- Online ISSN
- Additional Links
- Rockburst mechanism
- implosion source component
- radiation pattern
- inversion of first motion amplitudes
- Industry Sectors
- Author Affiliations
- 1. Institute of Geology and Geotechnics, V Holešovičkách 41, 182 09, Praha 8, Czechoslovakia
- 2. Geophysical Institute, ul. Pasteura 3, 02093, Warsaw, Poland
- 3. Geophysical Institute, Boční II/1401, 141 31, Praha 4-Spořilov, Czechoslovakia