ABSTRACT

An analysis of explosive behaviour in a borehole provides the energy source for the fragmentation and movement of the rock mass. It begins (Fig. 1) with a shock wave travelling at a shock velocity D impacting an unreacted explosive and forming hot spots, mainly from the collapse of included voids. The high temperatures resulting from void collapse lead to an ensemble of reaction sites in the

1 INTRODUCTION

This article, one of two, is concerned with the modeling of steady state detonations in the heterogeneous media that comprise the bulk of commercial explosives. These explosives are, from the point of view of detonation physics, complex in that they contain a number of reactive ingredients in different phases and the detonation process itself is influenced by the confining rock.