北京市山前带宽线大组合地震勘探技术设想  

Tentative idea of wide-line large combination seismic exploration technique for Beijingmountain front belt

作　　者：王安国 冯居 李永明 WANG Anguo;FENG Ju;LI Yongming(Beijing Institute of Geological Survey,Beijing 102206,China)

机构地区：[1]北京市地质调查研究所,北京102206

出　　处：《地质装备》2025年第2期17-22,共6页Equipment for Geotechnical Engineering

摘　　要：北京市位于华北平原的西北边缘,三面环绕着山脉,山前带主要由河流冲积扇和冲积平原联合形成,形成了冲积扇-冲积泛滥平原的地貌特征;同时公路纵横交错,交通条件便利,人文环境多变。这种特殊的“双复杂”地震地质条件,导致地震数据干扰波发育,成像质量差,严重制约了城市地质隐伏构造和活动断裂的精确识别。结合库车山前带宽线大组合工程实践的效果,本文针对北京市山前带城市地质调查提出了一种宽线大组合地震勘探技术设想,预期实现降低采集噪声水平,提高采集品质,获得高质量的地震成像和丰富的地下地质信息,推动城市地质相关研究的进一步发展。Beijing is located at the northwest edge of North China Plain,surrounded by mountains on three sides.The mountain front belt is mainly formed by the combination of river alluvial fan and alluvial plain,which forms the geomorphological features of alluvial fan alluvial flood plain;At the same time,highways crisscross,transportation conditions are convenient,and the cultural environment is changeable.This special“double complex”seismic geological condition leads to the development of seismic data interference waves and poor imaging quality,which severely restricts the accurate identification of hidden structures and active faults in urban geology.Based on the practical effects of wide-line large combination project at Kuqa mountain front belt,this paper proposes a wide-line large combination seismic exploration technology for urban geological survey of Beijing mountain front belt.It is expected to reduce the level of acquisition noise,improve the quality of acquisition,obtain high-quality seismic imaging and comprehensive underground geological information,and promote further development of urban geology research.

关 键 词：城市地质 地震勘探 宽线叠加 检波组合 

分 类 号：P631[天文地球—地质矿产勘探]