Building a Nomogram to Determine Drilling & Blasting Parameters in the Marginal Quarry Zone

In the paper, blasting seismic survey results for some mine blocks are given. Issues of studying the wave propagation processes in the rock mass and solutions to them are described specifically for mining engineers with minor theoretical deviations and emphasizing maximum practical significance. The method developed by the Mining Institute of the Russian Academy of Sciences Ural Branch to determine protective measures against the effects of blasting on protected objects depending on the explosive weight in delay, soil factors, and the permissible seismic velocity is described.

Based on previously identified patterns for various soils, dependencies between the rock mass properties and charge parameters have been built and summarized in a nomogram to simplify the corresponding determination of the technical explosion parameters. The advantage of this approach, in contrast to others, is the possibility of a quick multivariate evaluation, which is of great importance for the prompt elaboration of technical solutions.

In the paper, the specifics of determining the drilling & blasting parameters when approaching the marginal quarry zone are partially discovered and promising areas in studying seismic phenomena in rocks and the blast seismic for the nearest future outlined.