Heat load in a ledging stope at free state geduld gold mine

Abstract

The purpose of this study is to gain an understanding of the dynamics pertaining to beat loads in an underground ledging stops. The results of an experiment is compared to that of HRATFLOW and discussed. The results of the experiment concluded that heat flow from rock in the scope contributed 92,7% of the total heat load. The remainder was made up from heat flow from men, material and machinery. Ventilation air passing through the stope removed 79,3 % of the heat produced. Chilled service water used in the stope removed 15,8% of the beat while the remainder was removed by compressed air. A 2,0®C rise in the air temperature was observed during the main blast. This rise, in temperature was due to the use of explosives.