Browsing by Subject "warunki cieplne"

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Access status: Open Access ,
Wpływ izolowania zrobów na emisję ciepła w rejonie wydobywczym kopalni rud miedzi
(Data obrony: 2012-01-19) Soroko, Krzysztof
Wydział Górnictwa i Geoinżynierii
In KGHM mines copper ore extraction is carried out at the depth of 1100m. Further development of copper ore mines depends on having mining works carried out at the depth up to 1400m. At this depth the original rock temperature is 45 °C. This fact results in deterioration of heat conditions, in the same time limiting the possibilities to employ workers and to carry out mining works. A top priority of mines, owned by KGHM “Polska Miedź” PLC, is to provide proper thermal conditions in the underground excavations. The problem of high temperature hazard is constantly growing and it is going to be a decisive factor influencing excavation. In order to provide proper thermal conditions in underground excavations new mineshafts and ventilation systems should be built and the central air-conditioning system should be developed. These recommendations are well known. The efforts to limit the air flow coming from the mined out areas to mining excavations are not very big. Limitation of the air flow from mined out areas to mining excavations, especially to copper ore excavations, is possible, but has not been studied yet. The results, presented in the paper, obtained from the experimental and model research, show that the thermal conditions in the underground excavations of copper ore extraction can be improved by available technical means, which can be used for building dams isolating abandoned(mined out) areas. The dams will limit the air flow from mined out areas to mining excavations.