Experience of Drilling and Blasting Operations in Conditions of Application of a Mining System with a Level Caving

The experience and directions of improving drilling and blasting operations in underground ore mining, in conditions of using a mining system with a floor collapse, are considered. The analysis of technological solutions used in the mines of Russia, Ukraine, Sweden and so on is presented. The main research results are described. Using the example of the articles considered, the main directions of improving drilling and blasting operations are highlighted, such as the use of computer modeling, changing the configuration of wells, changing the design of the charge, improving explosives and means of initiation, improving well drilling methods, and so on. Based on the analysis, an idea has been formed about the share of various technological solutions in improving drilling and blasting operations