地震映像技术在泉州造船厂海上勘察中的应用
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摘要
介绍水域高密度地震映像勘察方法,论述该方法中震源技术、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。通过对泉州造船厂的海上地震勘察,并结合地质钻孔资料对映像时间剖面进行综合处理和解释,查明该区水下地形的起伏及变化情况,覆盖层的分层、深度以及基岩面的埋深、起伏与构造情况。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。
The high-density seismic imaging method working in water has been introduced.It is discussed that this method is different from conventional shallow earthquake reflected wave method in the seismic source technology,GPS and measuring technology,data acquisition technology and data processing technology.According to the marine seismic survey of Quanzhou shipyard,and combined with the comprehensive processing,analysis and interpretation of the imaging time section by using the geological borehole data,ups and downs and changes of the underwater topography,the stratification and depth of the overbruden,and the depth and ups and downs and tectonic situation of the bedrock,have been all identified.The results of the interpretation of the seismic imaging data and the marine borehole data are in substantial agreement.Therefore,seismic imaging method is an effective method for offshore exploration and has brought broad prospects to the geophysical exploration in the offshore engineering field.
The high-density seismic imaging method working in water has been introduced.It is discussed that this method is different from conventional shallow earthquake reflected wave method in the seismic source technology,GPS and measuring technology,data acquisition technology and data processing technology.According to the marine seismic survey of Quanzhou shipyard,and combined with the comprehensive processing,analysis and interpretation of the imaging time section by using the geological borehole data,ups and downs and changes of the underwater topography,the stratification and depth of the overbruden,and the depth and ups and downs and tectonic situation of the bedrock,have been all identified.The results of the interpretation of the seismic imaging data and the marine borehole data are in substantial agreement.Therefore,seismic imaging method is an effective method for offshore exploration and has brought broad prospects to the geophysical exploration in the offshore engineering field.
引文
[1]李哲生,颜志宏,林榕.水域工程物探勘察的新方法[J].工程勘察,1998,(3):70-73.
[2]熊章强,张学强,李修忠,等.高密度地震映象勘查方法及应用实例[J].地震学报,2004,26(3):313-317.
[3]吕邦来.水域高密度地震映象技术在工程勘察中的应用[J].港工技术,2006,(3):51-53.
[4]单娜琳,程志平.地震映像方法及其应用[J].桂林工学院学报,2003,23(1):36-40.
[5]熊章强,方根显.浅层地震勘探[M].北京:地震出版社,2002:112-122.
[6]甘文兵,刘江平,王延坤.地震映像法在某跨海大桥水上勘查中的应用[J].工程地球物理学报,2006,13(11):33-37.
[2]熊章强,张学强,李修忠,等.高密度地震映象勘查方法及应用实例[J].地震学报,2004,26(3):313-317.
[3]吕邦来.水域高密度地震映象技术在工程勘察中的应用[J].港工技术,2006,(3):51-53.
[4]单娜琳,程志平.地震映像方法及其应用[J].桂林工学院学报,2003,23(1):36-40.
[5]熊章强,方根显.浅层地震勘探[M].北京:地震出版社,2002:112-122.
[6]甘文兵,刘江平,王延坤.地震映像法在某跨海大桥水上勘查中的应用[J].工程地球物理学报,2006,13(11):33-37.
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