Research On The Influence Of The Detonating Ways To The Shock Wave Pressure Of Explosion Network

As a new type of special cutting technology, explosion cutting technology has the advantages of high efficiency, high speed and simple operation. Current studies are focused on the design of the device, the analysis of the cutting ability. Few experts pay attention to the pressure of the shock wave produced by the device. This paper set the cutting device under the water as the background. In order to decrease the pressure in the specific area, used the method of numerical simulation, analysed impact of the position of the initiation point, delaying time and backplane.This paper calculated the pressure of the shock wave of the single micro detonating cord, compared with the experiment, the error value was 5.74%. The method of numerical simulation in this paper had high precision. Then we designed the planar and 3D explosive network, selected the Plane 10cm above them as the typical plane and analysed the characteristic of pressure in the mode of detonating from point O, point A and double points. Also we designed the delaying detonating method with 80μs、180μs�'�490μs in point O. The results showed the the delaying detonating method could decrease the pressure in the typical plane. In the planar explosive network, it could avoid the superposition effect of shock wave and the maximum pressure decreased by 25.8%. In the 3D explosive network, the maximum pressure decreased by 45.8%. When adding the backplane, the position of the maximum pressure were consistent with the former ones. When the point O delay with 490μs, superposition effect of the shock wave could also be avoid, the maximum pressure of the planar and 3D explosive network were decreased by 48.5% and 60.9%.