Design Rules For Avoiding Draw Horizon Damage In Deep Level Block Caves

Butcher, R. J.
Organization: The Southern African Institute of Mining and Metallurgy
Pages: 6
Publication Date: Jan 1, 1999
Deep level block caving as a mining method is becoming more popular due to the fact that it is the lowest cost per ton underground extraction system. However, many block caves do not achieve their full potential due to draw horizon instability. In this paper five design rules are given to overcome this problem. The design rules described are applicable for slusher and trackless block caves where the operational depths exceed 500 metres.
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