Determination method for gap distance of submarine explosive

Abstract

The invention discloses a determination method for a gap distance of a submarine explosive. The determination method comprises the following operating steps: selecting a water area with stationary or slowly flowing water, wherein the depth of the water area is more than 5 m; preparing a transverse bar meeting needs of a gap distance test; standardly preparing an active cartridge bag and a passive cartridge bag both with a diameter of 35 mm and prescribed density from a blasting charge, wherein the mass of the active cartridge bag and the passive cartridge bag is 150 to 200 g; and inserting a detonator No. 8 into one end of the active cartridge bag, binding the active cartridge bag and the passive cartridge bag on the transverse bar at a predetermined interval, allowing a transverse bar unit to sink into water with sinking depth being at least 3 m, detonating the active cartridge bag at a safe distance, determining whether there is induced detonation according to damage conditions of the passive cartridge bag and adopting a maximum distance obtained in three successive times of induced detonation as the gap distance. The gap distance measured by using the method can reflect actual explosive properties of the explosive during underwater blasting.

Description

technical field [0001] The invention relates to a method for measuring the detonation distance of underwater explosives. Background technique [0002] Sacrificial detonation is exactly the phenomenon that after the explosive explodes, another explosive charge package can be stimulated to explode at a certain distance. The explosive package that explodes first is called the main charge, and the excited charge is called the fired charge. When the probability of detonation of the fired charge is 100%, the distance between the main charge and the fired charge is Called the sacrificial explosion distance. When the probability of the explosive charge being detonated is 0%, the distance between the main propellant charge and the propellant charge is called the detonation safety distance. The main factors affecting the detonation are the shock wave overpressure generated by the main charge, the action time and temperature, the radius of the fireball, the impact energy of the high-...

AI Technical Summary

Problems solved by technology

The sand field law restricts the specifications of the charge pack, and the test condition is exposed blasting, which is affected by factors such as sand grains

Because explosives are used in different environments and for different purposes, and are affected by factors such as different cartridge specifications and environmental conditions, the detonation distance of explosives determined by simple tests under specific conditions is not completely universal. Although the detonation distance obtained can be used to guide the storage distance of explosives, it is not completely reliable for guiding underwater blasting.

Images