Andreyev B. Scientific substantiation of technology and parameters of blasting at underground mining of ores in conditions of technogenic formations of depths.

The dissertation considers solution of the scientific substantiation problem of technology and parameters of blasting at underground mining of ores in conditions of depths technogenesis by theoretical generalizing the features of influence the anthropogenous morphostructures both on objects and technology of a blasting, and establishment the laws of shattering the technogenically loaded ores. The technological parameters of breaking the ore layers by blasthole charges of explosive corresponding to optimum values of required level of their saturation by explosion energy are determined. The drilling-and-blasting parameters, contributing to the decrease of ore dilutions by materials of technogenic origin are grounded. The conditions of increasing a explosion fraction of transformed in an ore massif for the account of gasdynamic localization of explosive detonation products of in boreholes are revealed. The flow sheets of breaking in conditions of depths technogenesis, that have been tested and have beenimplemented at Kriviy Rih ore basin mines when mining ores are designed.