E3S Web Conf.
Volume 192, 2020VIII International Scientific Conference “Problems of Complex Development of Georesources” (PCDG 2020)
|Number of page(s)||7|
|Section||Geotechnical and Geomechanical Problems of Development of Mineral Resources|
|Published online||30 September 2020|
Analysis of blasting seismic impact on underground mining workings under the conditions of the Magnezitovaya mine
Institute of Mining of the Ural branch of the Russian Academy of Sciences, 620075, 58, MaminaSibiryak, Ekaterinburg, Russia
* Corresponding author: email@example.com
Seismic impact of technological explosions on underground mining workings of the Magnezitovaya mine was assessed. Seismic stability of rocks of the Magnezitovaya mine was determined and safe distances from technological explosions have been calculated by the admissible seismic effect for rocks. URAN and Minimate Plus seismic recorders with three-component seismic receivers were used to establish the dynamic impact on the mine workings. Based on comparison of calculated values and experimental measurements, the recommendations are given for explosive mass limitation at a slowing-down stage at a level of minimum dangerous values for technological explosions in underground mine. It is established that the blasting operations carried out at the Magnezitovaya mine of PAO Magnezit Combine with fan longhole stopping were performed with the seismic impact safety of underground technological explosion and will not lead to the loss of rock mass stability near the underground workings. Relevance of these studies is to ensure industrial safety of underground mining operations.
Key words: explosion seismic impact / blasting operations / seismic recorders / industrial safety / safe distances / maximum velocity of seismic fluctuations / permissible speed of fluctuations / seismic stability
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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