Recommandation d'application du tir par paires de charges rapprochées dans les conditions de la carrière de minerai de fer de Boukhadra.

Abstract

ABSTRACT

Breaking rocks represents the first phase of the technological processes for the exploitation of open pit deposits. It consists in modifying the natural state of the rocks in order to minimize the blocometry and consequently an ease in the level of the extraction work. The quality of blasting rock fragmentation now remains a serious concern for mining companies, as well as the problem of outrigger exit and poor blast energy management at the toe of the bleacher. This work will be the subject of an analytical, empirical study and suggestion of a method of felling that is suitable for the best management of the energy of the shot at the level of the foot of the step of the open pit mine of Boukhadra. The purpose of this end-of-study project is to solve the problem of oversize exit at the foot, which will allow us to increase the performance of loading, transport and crushing equipment, which will reduce the cost price. of a ton of ore and developing a flat wave from it reduces the unsettled fragmentation zone.