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介绍了水域高密度地震映像勘查方法,论述了该方法中震源技术、GPS定位及测量技术、数据采集技术和资料处理技术不同于常规浅层地震反射波法的特点。通过对造船厂的海上地震勘察,并结合地质钻孔资料对地震映像时间剖面进行了综合处理、分析和解释,作出了地震波探测解释剖面图、覆盖层厚度分布等值线图和基岩埋深等值线图,查明了该区水下地形的起伏和变化情况,覆盖层的分层、深度和分布情况以及基岩面的埋深、起伏与构造情况,为整个工程的设计和施工提供了科学依据。结果表明,地震映像资料解释结果与海上钻孔资料基本一致,地震映像法是一种用于海上探测行之有效的方法,在近海工程物探领域具有广阔的应用前景。
This paper introduces the exploration method of high density seismic image in water area, and discusses the characteristics of seismic source technology, GPS location and measurement technology, data acquisition technology and data processing technology different from the conventional shallow seismic reflection wave method in this method. Through the seismic survey of the shipyard, combined with the geological borehole data, the seismic reflection time profile is comprehensively processed, analyzed and interpreted. The seismic wave detection interpretation section map, cover thickness distribution contour map and bedrock depth Contour map to ascertain the ups and downs of the underwater terrain and changes in the area, the cover of the stratification, depth and distribution of bedrock surface depth, undulation and tectonic conditions for the entire project design and construction The scientific basis. The results show that the interpretation results of seismic images are basically the same as those of offshore drilling data. Seismic mapping method is an effective method for marine exploration and has broad application prospects in the field of geophysical exploration.