Dynamic Blast Conditions and Explosives System Performance
The factors that have direct bearing on the performance of void-sensitized explosives consist of both static and dynamic factors. Among the former are the usual blast design parameters such as density of the explosive, borehole diameter, burden and spacing, and delay interval, which form the basis of any blast design. These design parameters fall within the normal operating window prescribed for the explosive employed. In contrast, the dynamic blast parameters that evolve as the blast progresses are not usually taken into account in defining the operating window for the same explosive. This study shows the importance of these changing conditions during the blast and their role on the expected performance of the explosive and the detonator. These include the changing burden, spacing and confinement, propagating pressures within and outside the explosive columns, and delay sequencing, which are often the result of both inter-hole and intra-hole phenomena. It is shown that uneven blasting performance and explosive malfunctions can often be traced directly to these effects.
explosives blasting sympathetic pressure void sensitization firing time scatter
Bibhu Mohanty
Lassonde Institute and Department of Civil Engineering University of Toronto, Toronto, Canada
国际会议
The Asian-Pacific Symposium on Blasting Techniques(亚洲太平洋地区爆破技术研讨会)
昆明
英文
16-19
2007-05-08（万方平台首次上网日期，不代表论文的发表时间）