【摘要】 在地球物理勘探中,地震信号的激发源分为爆炸震源和非爆炸震源两种.其中爆炸震源自20世纪20年代一直沿用至今,而非爆炸震源已由最初的落重式震源发展到今天的可控震源,成为较完善的机电一体化设备.本文介绍了可控震源的发展,并且根据我国地震勘探发展对电火花震源、夯击震源、电磁驱动可控震源、液压式可控震源以及精密可控主动震源进行了分析,发现适用于浅层高分辨率地震勘探的电磁驱动高频可控震源一直没有大规模的应用于野外地球勘探,吉林大学国家地球物理探测仪器工程技术研究中心对此开展了研究工作,自行设计研制出PHVS-500/1000型国内第一台电磁驱动的轻便高频可控震源.根据地震勘探仪器技术发展现状,以及当前地球物理勘探技术进步与市场的发展需求,展望了小吨位、经济型的电磁可控震源的发展方向.更多还原

【Abstract】 In geophysical exploration,explosive source and non-explosive source are the two most commonly used types of excitation sources of seismic signals.Explosive source has been used since 1920s,remaining almost the same.Non-explosive resource,on the other hand,has developed into a set of comparatively perfect electromechanical integration equipment,from its initial falling weight type to today’s vibrators.In this paper,we introduce the development of vibrators and recounted the basic principle of sparker source,mini-sosie,electromagnetic driving vibrator,hydraulic vibrator and controlled accurately seismic source.After analyzing application of the above five types of seismic sources,unfortunately we drawn a conclusion that the electromagnetic driving portable high-frequency vibrator,which commonly used in shallow high resolution seismic exploration,has not been applied in field exploration in a large scale.The first domestic electromagnetic driving portable high-frequency vibrator has been independently designed and manufactured by "National Engineering Research Center of Geophysics Exploration Instruments,Jilin University".Comprehensively considering the development trend of seismic exploration instrumentation,the progress in current geophysical techniques and the demand of market,we can look into the future that electromagnetic driving vibrators would be light-tonnage and economical in the development direction.更多还原