The experience, which has been obtained in Polish mining allow us to conclude that the bending of the roof layer over an exploited seam is one of the most important factors influencing the risk of strong seismic emissions. The seismic consequences of plastic deformations during roof layer bending are discussed in the paper. The linear distribution of seismic shock epicentres and trends in the development of seismic energy and event frequency, are expected before very strong seismic events that greatly increase rock-burst risk.
The proposed model of inelastic deformations allow us to correlate the seismic data and results of mining observations, such as convergence of the roof layer and the changes of wells diameter drilled in the roof layer in assessing the risk of rock-bursting.
Bak P., Christensen K., Danon L., Scanlon T., 2002. Unifild scaling law for earthquakes. Phys Rev Let 88: 178501.
Boresi A.P., Schmidt R.J., Sidebottom O.M., 1993. Advanced mechanics of materials. John Wiley and Sons, New York.
Consolini G., Michelis P., 2002. Fractal time statistics of AE-index burst waiting times: evidence of metastability Nonlinear Processes in Geophysics nr 9, 419-423.
Dubiński J., 1999. Concentration of coal exploitation and mining hazard Central Mining Institute. Katowice 219 p. (in polish).
Dubiński J., Konopko W., 2000. Rock-burst estimation, forecast, prevention Central Mining Institute. Katowice 378 p (in polish).
Helmstetter A., Sorento D., 2002. Diffusion of epicenters of earthquake aftershocks, Omori law, and generalized continuous -time random walk models. Physical Review E 061104 (23 p.).
Koyama J., 1997. The complex faulting process of earthquakes. Kluwer Academic Publishers 195 p.
Lasocki S., 2005. Probabilistic analysis of seismic hazard posed by mining-induced events. Proceedings of the 6th Int. Symp. on Rockbursts and Seismicity in Mines Controlling on Seismic Risk ACG, Perth, 151-156, eds Potvin Y. & Hudyma M., Australian Centre for Geomechanics, Nedlands, Western Australia.
Lasocki S., 2008. Some unique statistical properties of the seismic process in mines. in Proceedings of the 1st Southern Hemisphere International Rock Mechanics Symp., Vol. 1: Mining and Civil, Perth, 667-678, ed. ed. Potvin Y., Australian Centre for Geomechanics, Nedlands, Western Australia.
Marcak H., 2002. The influence of strata and tectonics on the rockburst risk in polish mines In Seismogenic Process Monitoring, Ogasawara H., Yanagidani T., Ando M., eds, Balkema, 51-63.
Marcak H., 2011a. The seismic activity due to the bending of exploited seam roof. Proceedings of 22nd World Mining Congress 11-16 September Istanbul
Marcak H., 2011b. Influence of inelastic deformations in bending roof layers on the seismicity in the underground mines Materials and Works of GIG. Proceedings of the Conference “Tąpania 2011” Kocierz (in polish).
Mogi K., 1963. Some discussion on aftershocks, foreshocks and earthquakes swarms. The fracture of a semi finite body caused by an inner stress origin and its relation to the earthquake phenomena. Bull. Earthq. Res. Inst. Tokyo Univ 41, 615-658.
Orlecka-Sikora B., 2010. The role of static stress transfer in mining induced seismic events occurrence, a case study of the Rudna mine in the Legnica-Glogow Copper District in Poland Geophys. J. Int. 182, 1087-1095.
Ouchi T., 1993. Population dynamics of earthquakes and mathematical modeling. PAGEOPH, 140, 15-28.
Rice J.R., 1980. The mechanics of earthquake rupture in Physics of the Earth Interior. (Proceedings of International School of Physics ”Enrico Fermi” Italian Physical Society North-Holland Pub. Co, 515-649.
Rice J.R., Ruina A.L.. 1983. Stability of steady frictional slipping. Trans. ASME, J. Appl. Mech. 50, 343-349
Saustowicz A., 1955. Rock-mass mechanics. Wydawnictwo Górniczo-Hutnicze Katowice.
Węglarczyk S., Lasocki S., 2009. Studies of Short and Long Memory in Mining-Induced Seismic Processes Acta Geophysica Special Section: Triggered and Induced Seismicity Vol. 57, No. 3, 696-71