Study of the effect of initiation method on the propagation characteristics of detonation wave
In order to investigate the influence of detonation wave collision on the distribution of detonation pressure,a comprehensive approach combining theoretical derivation,numeri-cal simulation and field experimentation was employed to analyze the changes in the internal and external detonation pressure of explosives under various detonation modes.The study findings reveal that following detonation wave collision,normal collision,oblique collision and Mach reflection phenomena occur sequentially,with the maximum detonation pressure being more than 3 times that of the stable detonation pressure.When employing the sym-metrical bilinear detonation method,the detonation pressure on the energy side is 2.74 times that on the detonation side,and the axial detonation pressure increases by 75%compared to the single-side linear detonation method.Results from foundation pit blasting tests demon-strate that using the symmetrical bilinear detonation method leads to a straight-line arrange-ment of detonations along the direction of detonation wave collision and energy collection,significantly enhancing penetration effects between blast holes compared to the unilateral lin-ear detonation method.
NETL
NSTL
万方数据
