高分辨率单道地震探测技术在内陆浅水区的试验研究  

An experimental study on the high-resolution single-channel seismic exploration technology for inland shallow waters

作　　者：岳航羽 张明栋 张保卫 王广科[2,3] 王小江[2,3] 刘东明 YUE Hang-Yu;ZHANG Ming-Dong;ZHANG Bao-Wei;WANG Guang-Ke;WANG Xiao-Jiang;LIU Dong-Ming(Center for Geophysical Survey,China Geological Survey,Langfang 065000,China;Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang 065000,China;National Center for Geological Exploration Technology,Langfang 065000,China;School of Geophysics and Information Technology,China University of Geosciences(Beijing),Beijing 100083,China;Geological Exploration Technology Institute of Jiangsu Province,Nanjing 210049,China)

机构地区：[1]中国地质调查局地球物理调查中心,河北廊坊065000 [2]中国地质科学院地球物理地球化学勘查研究所,河北廊坊065000 [3]国家现代地质勘查工程技术研究中心,河北廊坊065000 [4]中国地质大学(北京)地球物理与信息技术学院,北京100083 [5]江苏省地质勘查技术院,江苏南京210049

出　　处：《物探与化探》2022年第4期914-924,共11页Geophysical and Geochemical Exploration

基　　金：国家重点研发计划项目(2018YFF01013500);中国地质调查局地质调查项目(DD20208001、DD20208002、ZD20220115);物化探所中央级公益性科研院所基本科研业务费专项资金资助项目(AS2020Y02)。

摘　　要：单道地震探测技术以其配置灵活、简便高效、分辨率高的优势,在海洋区域地质调查、近海工程物探等领域得到了广泛的应用,但在内陆江河湖区域的实际应用案列较少。本文以河北雄安新区白洋淀为例,开展内陆浅水区高分辨率单道地震探测技术试验研究;对关键的采集参数,包括激发能量、激发间隔、航行速度以及接收单元个数等进行实际效果对比,以确定最优的参数组合;制定一套内陆浅水区单道地震数据处理流程及方法技术组合,逐步衰减各类干扰噪声,最大程度地提高内陆浅水区单道地震剖面的信噪比及分辨率。试验结果表明,内陆浅水域单道地震探测技术能够精细划分水域浅层地质结构,并与钻探资料吻合较好,有效地支撑服务江河湖环境、地质、地质灾害的调查研究。With the advantages of flexible configuration,convenience,high efficiency,and resolution,the single-channel seismic detection technology has been widely used in marine geological surveys and offshore engineering geophysical prospecting.However,there are few cases of the application of this technology in inland rivers and lakes.Therefore,an experimental study on the high-resolution single-channel seismic detection technology targeting the inland shallow waters of Baiyangdian Lake,Xiongan New Area,Hebei Province was conducted.The application effects using key acquisition parameters,including excitation energy,excitation interval,sailing speed,and the number of receiving units,were compared to determine the optimal parameter combination.A set of single-channel seismic data processing processes and methods for inland shallow waters were developed to gradually attenuate all kinds of noises and improve the signal-to-noise ratio and resolution to the greatest extent.The experimental results show that the single-channel seismic detection technology for inland shallow waters can finely divide the shallow stratigraphic structure in the waters.Moreover,the division effects agree well with drilling data.Therefore,this technology can effectively support the investigations of environment,geology,and geologic hazards in inland rivers and lakes.

关 键 词：内陆浅水区 高分辨率 单道地震 水域浅层地质结构 

分 类 号：P631.4[天文地球—地质矿产勘探]