ORICA products are widely known in the global market of industrial explosives consumers. Currently, the company has plants in 30 countries of the world, which produce various types of granular (ANFO) and emulsion (POWERGEL) explosives, as well as non-electric EXEL blasting systems. In May 1999, a group of specialists in the field of blasting from the Republic of Kazakhstan left for Turkey to conduct acceptance tests of industrial explosives of ORICA company, which are widely used in Kazakhstan since 1995 in underground and surface mining of mineral resources, blasting with boreholes and wells in weak, medium- hard and tough rocks, in dry and water-filled boreholes and wells. The annual consumption of explosives is about 10,000 tons.
One of the ways to improve the efficiency of drilling and blasting operations is to improve the design of borehole and borehole column-mounted charges during explosive blasting of solid minerals. The analysis of existing designs of explosive charges, used for stripping the rock mass at mining enterprises, allows to note that along with the widespread solid cylindrical column of explosives, quite a large number of more effective designs, allowing to actively manage the energy of the explosion in the destruction of the rock massif, has been developed. These designs are based on the extensive use of a number of factors: reducing the initial pressure of the explosion products, increasing the time of their impact on the massif, creating several groups of detonation waves in the charge, cumulation, etc. However, despite the advantage of dispersed charges compared with solid charges, they have not yet found wide application due to the significant material and time costs of charging boreholes or wells.
