Technical gazette, Vol. 29 No. 1, 2022.
Preliminary communication
https://doi.org/10.17559/TV-20201219210559
Production Mining Based on the Results of Seismic Measurements at the "Zvečaj" Quarry Site - A Case Study
Melita Srpak*
; Varaždin County, Institute for Physical Planning, Mali Plac 1a, 42 000 Varaždin, Croatia
Darko Pavlović
; Gas Transmission System Operator (PLINACRO L.T.D.), Savska cesta 88a, 10 000 Zagreb, Croatia
Igor Klopotan
; Polytechnic of Međimurje in Čakovec, Bana Josipa Jelačića 22a, 40000 Čakovec, Croatia
Željko Knok
; Polytechnic of Međimurje in Čakovec, Bana Josipa Jelačića 22a, 40000 Čakovec, Croatia
Abstract
During mass blasting, seismic effects occur that can significantly damage existing buildings near the blasting site, depending on the amount of explosives and the blasting distance itself. An additional problem during blasting is the facilities located in the critical zone of mining works - the problem of unpredictable behavior of the soil or rock in relation to the propagation of seismic waves. Based on the measurements performed on the example presented in this paper at the site of the quarry EP "Zvečaj" (minefield at the level of the second floor K + 163 to K + 179), the method is explained, how quality and well-conducted research can determine optimal amounts of explosives per ignition level. Based on the performed measurement procedures and processed data, measured and obtained results of values of soil oscillation velocities in the direction of populated areas caused by production blasting in the quarry EP "Zvečaj", it follows that the conducted mining activity, consequently, had no damage. Blasting significantly affects the environment, due to the emission of noise and seismic action, which is manifested in the form of oscillations and elastic deformations of the rock, which is an artificial earthquake in which the place of explosion is its epicenter.
Keywords
blasting; blasting effects; environment; noise; seismic effects of blasting; vibration
Hrčak ID:
269561
URI
Publication date:
15.2.2022.
Visits: 1.098 *