Izlaganje sa skupa
THE IMPROVEMENT OF THE EXCAVATION METHODS IN BAUXITE DEPOSITS
Borislav Perić
Slavko Vujec
Robert Zvežina
Sažetak
The underground bauxite excavation in Yugoslavia is getting more important recently due to gradual exploitation of shallow deposits. The main excavation method is sublevel caving method. That technology of exploitation is characterized by high excavation loosses reaching even to 50% due to mixing of bauxite with waste. By beds with competent limestone roof which are not liable to direct caving are formed unplanned open spaces so the work safety is often dangercd by sudden caving. That was the reason for carrying out the observations in situ and investigations on mathematical models to define boundary of excavated space stability. This investigation were the basis for the new conception of further excavation of the »Jukići-Didare« mine with the application of even three exploitation methods maximally adapted to the characteristics of the remaining part of deposit.
Ključne riječi
Bauxite; Underground exploitation of bauxite; Sublevel caving method
Hrčak ID:
24713
URI
Datum izdavanja:
4.12.1990.
Posjeta: 1.920 *