Original scientific paper
IMPROVMENT OF THE MINING METHOD IN THE BAUXITE MINE ĆUKOVAC-GRIŽINICA
Borislav Perić
Slavko Vujec
Abstract
Exploitation of bauxite in region of Dalmatia has tradition of more than 50 years. The biggest underground mine of this bauxite hearing area was developed in deposit Ćukovac-Grižinica with proved workable reserves of 1.2 x 106 t. Yearly output in 1990. was 100.000 t. Production in this mine started 1987, and sublevel caving method was used. Coefficient of extraction in the parts with weak rocks is low, and unsufficient security in the conditions with firm roof. Therefore investigation of improvement of mining method was carrying on to coinside characteristics of rocks, and mining methods. Following methods were selected: sublevel caving (actually retreat stoping), sublevel sloping and sublevel caving with bauxite protection layer.
Keywords
Bauxite; Underground bauxite exploitation; Excavation methods; Improvement of excavation methods
Hrčak ID:
24752
URI
Publication date:
4.12.1992.
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