综合物探和钻探技术在第四纪隐伏断层探测中的应用  

Comprehensive Application of Geophysical Prospecting and Drilling Technology to Detect Buried Faults in Quaternary Period

作　　者：夏方华 于秀璇 沈军[2] 高启凤 XIA Fanghua;YU Xiuxuan;SHEN Jun;GAO Qifeng(Exploration Unit of North China Geological Exploration Bureau,Hebei Yanjiao 065201,China;Institute of Disaster Prevention,Hebei Yanjiao 065201,China)

机构地区：[1]华北地质勘查局综合普查大队,河北燕郊065201 [2]防灾科技学院,河北燕郊065201

出　　处：《防灾减灾学报》2024年第3期10-15,共6页Journal of Disaster Prevention And Reduction

基　　金：国家自然科学基金资助项目(2017041372216);河北省平原区环境地质应急事件地球物理方法有效性研究项目(454-0502-JBN-E0S1);三河市活动断层探测与地震危险性评价项目(ZCZB-2017-1049)。

摘　　要：采用以高分辨率地震勘探为主,配合瞬变电磁和高密度电阻率探测的方法,快速、准确圈定了北坞断裂的上断点位置、埋深等信息;通过跨断层联合剖面钻探和地球物理测井工作,查明了晚第四纪地层特征和层序,精确定位了目标断层的空间位置和断层位移量,进而揭示了目标断层的活动性。结果表明:综合物探技术的解释结果和钻探结果基本吻合,证明了方法的有效性。In this work,high-resolution seismic exploration,combined with transient electromagnetic and high-density resistivity detection,has been used to quickly and accurately delineate the location and buried depth of the upper breakpoint of Beiwu fault;Through cross fault joint profile drilling and geophysical logging,the late Quaternary stratigraphic characteristics and sequences are found out,the spatial position and fault displacement of the target fault are accurately located,and then the activity of the target fault is re⁃vealed.The interpretation results of comprehensive geophysical exploration technology are basically consis⁃tent with the drilling results,which proved that the application of comprehensive geophysical exploration and drilling technology in the detection of Quaternary concealed faults is effective.

关 键 词：活动断层探测 地震勘探 瞬变电磁法 联合剖面钻探 晚第四纪 

分 类 号：P631.441[天文地球—地质矿产勘探]