THE FORECAST OF BLAST SEISMIC EFFECTS ON INDUSTRIAL INFRASTRUCTURE


https://doi.org/10.17073/2500-0632-2017-1-12-20

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Abstract

The question of predicting the level of industrial blasts seismic effect on the industrial infrastructure is essential in the opencast mining. In our case, the interest is determined by the
need to ensure the safety of mining operations with sufficient effectiveness in the protected
objects area of OJSHC Yakutugol, located in the zone of mining operations influence
Neryungrinsky mine.
As a result of experimental researches it is established that natural factors affect the seismic
effect intensity, but they are not the determining. However, such factors as water content,
seasonal and perennial permafrost rocks should be considered when designing drilling and
blasting operations. The speed fluctuations of the soil at the point of observation depends primarily on the maximum group charge weight of explosives and hypocentral distance, i.e. the distance from the place inside the block where begins the destruction, cracking the rock
and any seismic waves from the explosion, and spread to the point of registration, the scale
of mass blasts.
That is why it has been necessary to ensure the accuracy and reliability of blast seismic action on protected objects prediction and to improve the efficiency of the drilling technology and blasting operations at the Neryungrinsky mine. This method should contain the relations between the seismic motion, as the blast result, and the blast characteristics with hypocentral distance. As a result of experimental investigations we obtained the dependence, which is implemented in the algorithm of the application program “SeismPrognoz”. The software supports quickly calculate the maximum vector speed of ground movement, mass of explosive charge (maximum in the group), a safe distance, the explosive charge total mass and use the calculation results to create the drilling and blasting passport of specified block.


About the Authors

N. N. Grib
Technical Institute (branch) of the North-Eastern Federal University.
Russian Federation

Dr. Sci. (Tech.), Prof.  Deputy Director on scientific work, Head of the Department of mining.

678960. Russia, The Sakha Republic (Yakutia), Neryungri, st. Kravchenko, 16





M. V. Tereshchenko
Technical Institute (branch) of the North-Eastern Federal University.
Russian Federation
Lead engineer, the laboratory of monitoring and forecast of seismicity.
678960. Russia, The Sakha Republic (Yakutia), Neryungri, st. Kravchenko, 16


G. V. Grib
Technical Institute (branch) of the North-Eastern Federal University.
Russian Federation

Cand. Sci. (Geol.-Mineral.). Head of the laboratory of monitoring and forecast of seismicity.

678960. Russia, The Sakha Republic (Yakutia), Neryungri, st. Kravchenko, 16





A. Y. Pazynich
JS Holding Company Yakutugol
Russian Federation

Cand. Sci. (Tech.). Technical director.

678960, Russia, The Sakha Republic (Yakutia), Neryungri, st. Lenina 3/1





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Supplementary files

For citation: Grib N.N., Tereshchenko M.V., Grib G.V., Pazynich A.Y. THE FORECAST OF BLAST SEISMIC EFFECTS ON INDUSTRIAL INFRASTRUCTURE. Gornye nauki i tekhnologii = Mining Science and Technology (Russia). 2017;(1):12-22. https://doi.org/10.17073/2500-0632-2017-1-12-20

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