Experimental Study on Emulsion Explosive Blasting under Different Under-Water Pressure

Abstract

This paper aims to study the effects of different water depths on the properties of emulsion explosives by use of an emulsion explosive underwater explosion test system for different hydrostatic pressure under the condition of 0.2% sodium nitrite sensitized emulsion explosive blasting model experiments. The results showed that the experiment designed by simulation of underwater explosion test equipment can be used in the explosive performance test sample in the compression state explosion. It can better simulate the explosive environment under different depth conditions. After blasting, the fractal dimension of concrete fragments decreases first and then rises with the increase of water pressure, and reaches an inflection point between 0.3 mpa and 0. 5mpa, which proves that water depth has a certain effect on the performance of explosives, and the effect is not linear distribution. This experimental study could provide a certain basis for subsequent research on underwater explosive characteristics of emulsion explosives.