Theoretical Analysis of Peak Pressure of Eccentric Uncoupled Charge Gunhole
Under eccentric and uncoupled charges,the peak pressure at the bottom and wall of the borehole is different,and the peak pressure is a basis for exploring the mechanism of rock breaking by blasting.This article introduces five calculation formulas for peak pressure of blast holes under different working conditions,and analyzes them through several calculation conditions.It was found that the effect of the charge on the bottom of the hole is a vertical collision,the peak pressure acting on the hole wall(upper)is the reflection pressure of the air shock wave,and the peak pressure acting on the hole wall(lower)is the reflection pressure of the detonation wave.Based on the correspondence between the incident angle and the reflection coefficient,a calculation formula for the oblique reflection pressure was proposed,in order to provide inspiration for the study of the interface parameters of the solid medium in the oblique collision of the charge.
decouplingpeak pressure of boreholecalculation formula
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