Comprehensive Study Of Explosive Shooting Techniques In Seismic Exploration

The article combines LIAOHE Area exploration status, based on the geophysical theory. It discusses the effect that explosives excitation energy and excitation frequency in seismic exploration. Theoretical analysis show that selecting the appropriate dose of small high-energy explosives can improve the capacity of explosives, enhance the shooting energy and it will help stimulate more high-frequency energy source wavelet. Point out that the hole produced by the type of the explosion seismic intensity of an impact, the vibration of the elastic wave amplitude and the equivalent hole in the radius of curvature in this direction is proportional. According to the theory, analyzing the explosive type and shape in practical work, it thinks that the long grain can not be shaped to stimulate the formation of a larger radius of curvature of the equivalent hole, therefore, it can not increase the effect of excitation energy. By he impact of virtual interface for its reflection of the sub-wave excitation, analyzing the frequency and amplitude from the two aspects. Determine using the Quantitative analysis techniques of the Virtual reflection wave investigation and monitoring of elicitor to exploration, choosing the excitation depth at 1/4 wavelength of the virtual interface, and will get a strong elicitor of energy wave, conducive to improving the energy of the deep reflection, to improve the overall quality of seismic profiles. By analyzing and summarizing the geological conditions of the target block earthquake, according to the requirements of resolution and S/N ratio. The research made good results in the field acquisition. The data quality has made great improvement, and completed the task and the indicators of geological requirement.