Research Explosion Shock Wave Signal Based On Wavelet Transform Under Deep Water

With advances in technology, explosion technology has been more widely used indredging, port development, construction and other Underwater Blasting projects.Underwater explosion effects, due to the large amount of its impulse transmission,characteristics of slow decay of underwater shock wave, a serious threat to the safety ofbuildings in water, submarines, ships and staff of the water. Due to limitations, the studyof underwater blast on Most are concentrated in the shallow water, depth of more than50mof underwater explosions relative lack of research, particularly the study of underwaterblast signal frequency component is relatively less.Based on a comprehensive analysis of the history and current situation at home andabroad, using theoretical analysis, laboratory tests and numerical calculation method ofcombining to study shock wave in deep water and dynamite explosion. First, the use of anaqueous medium container explosion experiments carried out at different water depths,regression analysis of the experimental data obtained attenuation of underwater explosionshock waves in different water depths and their K、α values. Then, based on the theory ofwavelet transform using MATLAB program uses a frequency analysis of two waveletsresulting shock wave signal to experiment, you get the underwater explosion shock wavesignals of different frequency components decay with time, the pressure peaks and thecorresponding time and energy The proportion, It also shows that no sensitive underwaterblast pressure signal wavelet basis selection. The results can be used for the same test orengineering reference.