‘Blastability’ and blast design

Abstract

Rock mass properties largely control blasting performance. However, despite many years of fundamental work aimed at describing the role of rock mass properties in blasting, these properties are not routinely included in blast design procedures. This paper reviews the conventional methods used to account for rock mass properties in the design of blasts and discusses the concept of ‘blastability’. In the absence of suitable methods for the incorporation of rock mass properties in blast design, an approach is suggested where blasting engineers can develop a ‘local blastability scheme’ in order to derive basic designs for different rock mass conditions. These basic designs can then be optimised through operating experience assisted by monitoring, analysis and modelling.

Topics & Concepts