A Phased Array Approach to Rock Blasting

Gertsch, Leslie ; Baird, Jason

University of Missouri

关键词: Explosive Fracturing;    Process Control;    42 Engineering;    Design;    Shock Waves;   

DOI  :  10.2172/891935
RP-ID  :  None
RP-ID  :  FG26-03NT41940
RP-ID  :  891935

美国|英语

来源: UNT Digital Library

【 摘 要 】

A series of laboratory-scale simultaneous two-hole shots was performed in a rock simulant (mortar) to record the shock wave interference patterns produced in the material. The purpose of the project as a whole was to evaluate the usefulness of phased array techniques of blast design, using new high-precision delay technology. Despite high-speed photography, however, we were unable to detect the passage of the shock waves through the samples to determine how well they matched the expected interaction geometry. The follow-up mine-scale tests were therefore not conducted. Nevertheless, pattern analysis of the vectors that would be formed by positive interference of the shockwaves from multiple charges in an ideal continuous, homogeneous, isotropic medium indicate the potential for powerful control of blast design, given precise characterization of the target rock mass.