DEFINING THE PARAMETERS OF QUARTZ RESOURCE SAVING BLASTING BY FLAT CHARGE SYSTEM

Abstract

Kishtim deposit of high-valued granular quartz is
the only source of raw material for high-technological sectors of Russian economy. The technology of
conducting drilling and blasting operations is labor
consuming and does not provide the required performance and over-grinding fractions of quart on
the exit. Consequently, the technology improvement
and the parameters of drilling and blasting optimization is urgent. . In terms of theoretical studies the
technology of layer breaking by vertical fans wells
using mechanized charging with granular explosives and simultaneous all charges in the fan blasting is proposed. As theoretical studies and polygon
experiments have shown, the degree of reduction
quartz over-grinding while can breaking can be attained at the expense of using the effect of charges
interaction in their simultaneous blasting holes in
the fan. Its result is common cavity explosion formation without over-grinding zones around each
charge. The parameters of experimental drilling and
blasting operations on the pilot section of the deposit are defined.