Abstract
Regulation of the parameters of the exploded rock mass collapse has a significant impact on the efficiency of open-pit mining. Regulation of the parameters of collapse in quarries of non-metallic solid building materials provides a large volume of production. In ore deposits, limiting the width of the collapse allows for more rational extraction of ore from the subsoil and reduces the overburden volume. The existing recommendations for determining the parameters of the collapse do not allow to carry out engineering calculations to obtain the collapse of the specified parame¬t¬e¬r¬s. Based on the analytical method of research, a technique is proposed to determine the width and height of the collapse of the exploded rock mass, depending on the blockiness of the exploded array and the parameters of drilling and blasting operations (BVR). The proposed method allows, with a change in the parameters of the BVR on the working sites of the quarry, to have a collapse of a given width and height. The comparison of analytical data with the results of industrial explosions is carried out.
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