Seismic safety in conducting large-scale blasts

[摘要] In mining enterprises to prepare hard rocks for excavation a drilling and blasting method is used. With the approach of mining operations to settlements the negative effect of large-scale blasts increases. To assess the level of seismic impact of large-scale blasts the scientific staff of Siberian State Industrial University carried out expertise for coal mines and iron ore enterprises. Determination of the magnitude of surface seismic vibrations caused by mass explosions was performed using seismic receivers, an analog-digital converter with recording on a laptop. The registration results of surface seismic vibrations during production of more than 280 large-scale blasts at 17 mining enterprises in 22 settlements are presented. The maximum velocity values of the Earth's surface vibrations are determined. The safety evaluation of seismic effect was carried out according to the permissible value of vibration velocity. For cases with exceedance of permissible values recommendations were developed to reduce the level of seismic impact.

[发布机构] Siberian State Industrial University, 42 Kirova Street, Novokuznetsk; 654007, Russia^1;Laboratory for Safety of Explosive Work, Scientific Center VostNII, 3 Institutskaya Street, Kemerovo; 650002, Russia^2

[效力级别] 地球科学

[关键词] Analog-digital converter;Blasting method;Maximum velocity;Mining enterprise;Mining operations;Safety evaluations;Seismic vibrations;Vibration velocity