高密度水域地震映像在海上造船厂勘察中的应用
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摘要
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。
In this paper,high-density seismic imaging method working in water has been introduced.The seismic source technology,GPS and measurement technology,data acquisition technology,data processing technology and the characteristics which are different from conventional shallow earthquake reflection shooting have been discussed.The shipyard marine seismic surveys,drilling and geological information with seismic mapping of the time profile of a comprehensive processing,analysis and interpretation made a shock wave detection profiles,covered layer thickness distribution contour map and buried bedrock deep contour map to identify the underwater topography of the area and changes in the ups and downs,the stratified layers coverage,the depth and distribution of surface and the bedrock depth,the ups and downs and structure,for the whole project to provide the design and construction for the scientific basis.Results show that the seismic data interpretation and the sea drilling well data are basically the same,and seismic mapping method that is an effective sea exploration method in the field of offshore engineering geophysics has broadened the application prospects.
In this paper,high-density seismic imaging method working in water has been introduced.The seismic source technology,GPS and measurement technology,data acquisition technology,data processing technology and the characteristics which are different from conventional shallow earthquake reflection shooting have been discussed.The shipyard marine seismic surveys,drilling and geological information with seismic mapping of the time profile of a comprehensive processing,analysis and interpretation made a shock wave detection profiles,covered layer thickness distribution contour map and buried bedrock deep contour map to identify the underwater topography of the area and changes in the ups and downs,the stratified layers coverage,the depth and distribution of surface and the bedrock depth,the ups and downs and structure,for the whole project to provide the design and construction for the scientific basis.Results show that the seismic data interpretation and the sea drilling well data are basically the same,and seismic mapping method that is an effective sea exploration method in the field of offshore engineering geophysics has broadened the application prospects.
引文
[1]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,2006,3(1):33~37.
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[2]杨占东,刘江平,刘作.地震映像法在长江某过江隧道勘察中的应用[J].工程地球物理学报,2007,4(6):601~605.
[3]杨祥森,林昀,崔德海.地震映像法在铁路隧道隐伏岩溶勘查中的应用[J].工程地球物理学报,2007,4(5):471~474.
[4]王永,王治华,仇恒泉,等.水上高密度地震映像法在水利工程中的应用[J].工程地球物理学报,2005,2(6):442~448.
[5]李越兴,曹哲明.地震反射波法在宜万铁路岩溶探查中的应用[J].工程地球物理学报,2007,4(2):105~108.
[6]孙红亮,雷宛,钟韬,等.岩溶地区地震映像法的资料处理[J].勘察科学技术,2006(2):60~64.
[7]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.
[8]王林飞,薛荣俊.浅海回填区域的地震映象效果分析[J].中国海洋大学学报,2006,36(增):185~188.
[9]李鸣祉.地震勘探资料数字处理[M].徐州:中国矿业大学出版社,1989.
[10]何樵登.地震勘探原理和方法[M].北京:地质出版社,1986.
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