The method of measuring the detonation characteristics of emulsion explosives and express determination of the strength properties of rocks

The article presents a method for measuring the detonation characteristics of emulsion explosives and express determination of the strength properties of rocks for the complex adaptation of drilling and blasting parameters to the changing mining and geological conditions of the development of complex-structured mineral deposits by an open method. The developed technique allows: to set the parameters of the recorded signals during the spherical drilling of wells, characterizing violations in the places of contact of rocks with various physical and mechanical properties; to determine, within the framework of pilot tests, the patterns of detonation development in sleeve and borehole explosive charges of different diameters, as well as when using intermediate detonators with different weights; to establish the locations of the rational location of intermediate detonators during the counter initiation of borehole explosive charges. Data on the process of spherical drilling of wells at a local excavation unit is obtained using an experimental device installed on a drilling rig, developed by specialists of IM UB RAS. Measurements of the detonation rate in industrial conditions at a special landfill or in a quarry are carried out with equipment of domestic and foreign production. Based on the measured data, regression equations are established by construction. The obtained equations make it possible to determine the value of the detonation rate of the charge of an emulsion explosive at a known charging density, which makes it possible, by adjusting the density when mixing explosive components, to provide the necessary detonation pressure for the qualitative destruction of a specific rock mass.