Affiliation:
1. AGH University Krakow, Faculty of Civil Engineering and Resource Management, 30-059 Krakow, Poland
Abstract
The hazards of gaseous geodynamic phenomena and rockbursts are among the most challenging to assess and classify. This perception arises from both a review of the literature and an examination of available instructions and regulations in underground mining facilities. The hazard of gaseous geodynamic phenomena in Polish copper ore mines only appeared in 2009, whereas these phenomena occur and are commonly described in other mining countries. In Polish copper ore mines, due to the room and pillar system in fields with lengths of about 460 m, very often parallel to neighboring fields, which together give a length of about 900 m, it is difficult to identify the location of gas traps due to the large size of the area. This paper presents an analysis of the influence of the velocity of the excavation on the possibility of escalating or reducing the described mining hazards. An analysis of the impact of excavation velocity on the state of gaseous geodynamic and roof fall hazards was conducted for two mining fields. For the considered mining fields, the hypothesis was formulated that an excavation velocity greater than or equal to 17 m/month positively influences a reduction in both gaseous geodynamic and roof fall hazards.
Reference17 articles.
1. Trends and causes of fatalities in South African mines;Leger;Saf. Sci.,1991
2. Long-term prediction model of rockburst in underground openings using heuristic algorithms and support vector machine;Saf. Sci.,2012
3. Ortlepp, W. (2005, January 16–18). Comes of age—A review of the contribution to the understanding and control of mine rockbursts. Proceedings of the RaSiM, Melbourne, Australia.
4. Blake, W., and Hadley, D.G. (2003). Rockburst, Case Studies from North American Hard Rock Mines, Society for Mining Metallurgy and Exploration.
5. The extreme carbon dioxide outburst at the Menzengraben potash mine 7 July 1953;Hedlund;Saf. Sci.,2012