Experimental Research on Underwater Explosion Energy in the Simulated Plateau Condition

摘要

The air pressure of water surface decreases linearly with the altitude increasing for underwater explosion engineering in plateau area, it has very important significance for the blasting construction whether underwater explosion energy changes or not after the charge explosion. It researched that the peak pressure of shock wave, period of bubble pulsation, specific shock wave energy, specific bubble energy and total energy after the detonator explosion by simulating plateau condition in the closed and high pressure explosive vessel in this paper. The results show that the peak pressure shock wave have no relation with the air pressure when the air pressure decreases gradually in the range of 0 -4500m, but the attenuated time of shock wave rises in a certain degree, which causes the specific shock wave energy increasing slightly and the period of bubble pulsation increasing significantly by the rule of second order polynomial, but the air pressure decreases with the increase of altitude, the total of hydrostatic pressure of the charge spot reduces, which makes specific bubble energy have a little decreased; but the total energy keeps invariant basically.