Rock strength equivalent index
- DOI: 10.30686/1609-9192-2018-5-141-112-115
- УДК: 622.023: 622.026

A.B. Zhabin, E.A. Averin, A.V. Polyakov
The authors have performed the analysis of the available indices characterizing a set of rock properties and behavior expressed in terms of the degree and nature of fracturing. The indices applicability has been estimated for only some particular rocks. A method for the integral criterion is proposed, which characterizes the total complexity of rock breakage along the total length of a mine working, its section or a mine. The authors propose an index of rock strength equivalent characterizing the average strength of rock, with due account for individual rock behavior in different sections of an underground working.