Abstract
Abstract. Blasting induced vibration is one of the fundamental problems in the quarries and intense vibration can cause critical damage to environment nearby the quarries. Blasting operations generate seismic waves with different maximum particle velocity and wide spectrum of frequencies. This process depends on the properties of the rocks, properties of charges and technology of blasting. It is very important to study how to control vibration induced by blasting in the mitigation of negative effects of blasting in quarries. Maximum values of the particle velocity are depended on great number of different factors. The article presents the results of the analysis as well as an evaluation methodology of seismic safety of the objects during blasting work held by the seismic waves’ attenuation law and milisecond timing. Methodology of the evaluation of seismic effects of blasting are base for evaluation of the effects of seismic blasting in quarries in Slovakia.
Highlights
Mining of raw materials is currently in larger, and smaller surface mining operations is carried out by means of blasting works
We investigated the seismic effects of blasting work in a real rock environment in the near source zone
The properties of the rock mass in which the blasting works are performed are obtained by measuring the oscillation velocities and the frequency of propagation of seismic waves in situ
Summary
Mining of raw materials is currently in larger, and smaller surface mining operations is carried out by means of blasting works. Blasting works are technically and economically the most acceptable tool for breaking up hard rocks and affects the entire mining operation. It has an impact on the method and speed of loading, transporting, crushing and finalizing the product. We used the obtained data and methods for measuring and evaluating the effects of technical seismicity to optimize blasting works so, that the negative seismic effects on different types of receptors are as low as possible.
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