METHOD FOR DETERMINATION OF OPTIMAL PARAMETERS OF EXPLOSIVE DESTRUCTION OF ROCKS

摘要

FIELD: drilling and blasting operations in hard rocks with the use of a multicharge short-delayed blast, applicable in various branches using blasting operations in rock masses.;SUBSTANCE: the method includes measurement of the value of the specific power intensity of rock drilling in the process of drilling of blast holes and calculation according to it of the parameters of the explosive charges, plans and intervals of delay at blasting of them, estimation of the results of the blast by the power intensity of excavation of the rock mass and selection of the optimal parameters of the blast according to the statistics data. According to the invention, several blasts are performed on rock samples with similar properties of the mass with fixation of the precise time of initiation of each explosive charge, and a model of actual development of the mass explosion in real time and space for the particular blasting plan and construction of charges is constructed. At achievement of rational results of the blast, i.e. the mass properties, the parameters of the charges and sequence of their initiation in time and space are considered as optimal parameters of explosive destruction for masses with similar indices and accumulated in the data bank. The claimed method makes it possible to study the mechanism of development of the blast of explosive charges in the regime of real time directly in the rock mass and not on models.;EFFECT: determined the precise pattern and mechanism of development of the mass blast in real rock mass.;3 cl