QUALITY IMPROVEMENT CRUSHING OF AN ARRAY OF ROCKS BY CONTROLLING THE PARAMETERS OF THE EXPLOSION ENERGY

Abstract

Methods for controlling the effect of the explosion of borehole explosive charges and ways to increase the efficiency of blasting preparation of rock mass for excavation in open-pit mines are presented, an analysis of methods and methods for controlling explosion energy is carried out, characteristics of the research area and the main trends in the development of drilling and blasting operations in quarries are given. Calculations have been made of the redistribution of explosive energy along the length of a cylindrical charge using a solid structure, velocity potential fields and velocities of a composite (two parts) single cylindrical charge in a half-space using the design of a turbulator and field speed potential when using a turbulator design, and also investigated the effect of “turbo explosion” when crushing rocks with borehole explosive charges. The dimensions of the zone of radial cracks have been determined, and the process of crushing rocks using the design of a turbulator in a borehole explosive charge has been studied. Developed and industrially tested, and the technical and economic efficiency of the developed methods for improving the quality of crushing rock masses has been calculated.