engleski

Influence of horizontal blast holes on drilling and blasting costs of "Čelina" quarry near Sirač

Exploitation of mineral resources is dependent on the characteristics of the environment and the type of technology applied. The optimal way of obtaining raw mineral material is one that provides the lowest operating costs and the best prepared material unit for further use. In terms of costs, blasting is generally the most economical way of production of raw mineral materials used for the technical-building stone and lime. Influence of the blasting holes position on costs of exploitation of raw mineral material was analyzed for open pit Čelina, where exploitation of technical-building stone and carbonate raw materials is conducted for industrial processing. Raw material for production of technical-building stone and lime is obtained by blasting the limestone rock, by drilling the vertical and horizontal drilling blast holes. This paper presents an analysis of drilling and blasting parameters, which are an important factor in the product unit costs. The greatest attention is focused on the impact of horizontal blasting holes on costs of exploitation. Impact of costs, in case of mass blasting without horizontal blasting holes, has been elaborated, and the results were compared with the costs that are currently present.

Open pit ; Blast hole position ; Exploitation costs

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