Summary of the results of long-term seismic monitoring seismic signals from blasting in open pit mine

This paper summarizes the results of seismic monitoring of blasting operations at a limestone quarry. Data obtained during long-term monitoring allowed for a new assessment of the influence of factors affecting the amplitude of seismic waves from mass blasts. An analysis of seismograms from more than 1500 mass explosions over a 6-year period of continuous observations was conducted. It was demonstrated that at this facility there is no clear correlation between seismic wave amplitude variations and seasonal factors, which simplifies the design of mass blasts. A comparison of the seismic impact of block blasts with single-hole blasts allowed for an assessment of the impact of the accuracy of the non-electric initiation system. It was concluded that at least at this mining facility seismic wave amplitude is determined by the maximum charge mass per borehole, and improving the accuracy of the initiation system will not significantly reduce the seismic effect. The study was supported by the Ministry of Science and Higher Education of Russia within the framework of state contract, R&D project registration No. 1024032500070–8-2.7.5.