城市活断层的抗干扰高分辨率浅层地震勘探研究  

Research on Detecting Urban Active Faults by Shallow Seismic Exploration Method with Anti-disturbance High Resolution

作　　者：潘纪顺[1] 张先康[1] 刘保金[1] 方盛明[1] 王夫运[1] 段永红[1] 张红强 

机构地区：[1]中国地震局地球物理勘探中心,郑州450002 [2]中铁大桥集团一公司,郑州450003

出　　处：《中国地震》2003年第2期148-157,共10页Earthquake Research in China

基　　金：国家重点基础研究项目 (G19980 4 0 70 2 );国家发展计划委员会高新技术项目 (2 0 0 1977);中国地震局地球物理勘探中心论文号 :RCEG2 0 0 119。

摘　　要：首先 ,简要介绍了城市活断层探测的意义及世界各国开展城市活断层探测的基本情况。在简述抗干扰高分辨率浅层地震勘探基本原理的基础上 ,重点论述了城市活断层的抗干扰高分辨率浅层地震勘探的震源激发、数字地震仪性能、接收方式与接收条件、观测系统以及数据处理与资料解释等。研究表明 ,对于城市活断层的抗干扰高分辨率浅层地震勘探 ,在数据采集环节应采用具有线性或非线性变频扫描功能的可控震源和与其相匹配的地震仪器 ,以及小道间距、小偏移距、多接收道、短排列和高频检波器接收的工作方法 ;在数据处理与解释环节 ,要重视折射静校正技术、噪声压制技术、高精度速度分析技术、子波压缩技术、子波零相位化技术和叠前偏移技术等的应用。最后 ,给出了城市活断层的抗干扰高分辨率浅层地震勘探实例。The significance of urban active fault detecting and its basic developing situation are introduced briefly.Based on the simple describle of the basic principle of anti disturbance high resolution shallow seismic exploration,All the sources,the properties of digital seismic instruments,the receive method and conditions,the observation system,and the data processing and interpretation of the urban active fault detecting are discussed emphasizedly.The research results are controlled source which has linear or nonlinear variabe frequency scan function and the seismic instruments which match with it,and the method of small group intervals,small offset,much more channels,short array length,high frequency receivers are applied during the link of data acquisition,and that the techniques of the refraction static correction,the noise suppressing,the high resolution velocity analysis,the wavelet length compression,the wavelet zero phase,and the prestack migration should be applied emphasizedly during the link of data processing and interpretation.Finally, a field example is given.

关 键 词：城市活断层 抗干扰 高分辨率 浅层地震勘探 数据采集 数据处理 

分 类 号：P315.2[天文地球—地震学] P315.6[天文地球—固体地球物理学]