| Issue |
E3S Web Conf.
Volume 105, 2019
IVth International Innovative Mining Symposium
|
|
|---|---|---|
| Article Number | 01012 | |
| Number of page(s) | 11 | |
| Section | Environment Saving Mining Technologies | |
| DOI | https://doi.org/10.1051/e3sconf/201910501012 | |
| Published online | 21 June 2019 | |
Blasting Delay Pattern Development in the Light of Rockburst Prevention – Case Study from Polish Copper Mine
1
KGHM CUPRUM Ltd. Research & Development Centre, 2-8 Sikorskiego, 53-659 Wrocław, Poland
2
KGHM Polska Miedź S.A., Polkowice-Sieroszowice Mine, Kaźmierzów, 59-101 Polkowice, Poland
3
Luleå University of Technology, SE-971 87 Luleå, Sweden
* Corresponding author: pmertuszka@cuprum.wroc.pl
In order to reduce the risk of induced seismicity related to underground mining, a number of preventive actions are applied in the form of passive and active prevention methods. The former are mainly of an organisational nature and their effectiveness is usually considered in the long term, while the active methods are mostly based on the detonation of explosives and are aimed to release the seismic energy accumulated in the rock mass. In this paper, modifications of the firing pattern aimed to concentrate the paraseismic vibrations while maintaining the appropriate excavation of the mining face has been verified on the basis of underground tests. The evaluation was based on fragmentation analysis. The obtained results confirmed, that the blasting pattern modifications related to the reducing of the face firing time do not cause significant differences in terms of the appropriate excavation of the mining face.
© The Authors, published by EDP Sciences, 2019
This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0 (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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