共偏移距地震反射波方法用于城市活断层探测  

APPLICATION OF COMMON OFFSET SEISMIC REFLECTION METHOD TO URBAN ACTIVE FAULT SURVEY

作　　者：刘保金[1] 姬继法[1] 徐朝繁[1] 袁洪克[1] 廖旭[2] 白云[2] 万波[2] 

机构地区：[1]中国地震局地球物理勘探中心,郑州450002 [2]辽宁省地震局,沈阳110031

出　　处：《地震地质》2006年第3期411-418,共8页Seismology and Geology

基　　金：国家发展与改革委员会项目"城市活断层试验探测"(20041138)资助

摘　　要：在简要介绍共偏移距地震反射波勘探方法原理、现场数据采集和室内资料处理方法的基础上,结合福州和沈阳2个城市的活断层探测实例,探讨了采用共偏移距地震反射波方法进行活断层探测的有效性和局限性。结果表明,该方法具有分辨率高、对地下构造的重现性好、探测结果可实时分析解释等特点,在第四纪覆盖层较薄、基岩面起伏变化较大的地区采用该方法可快速对被测目标进行准确定位。The method and principle of common offset seismic survey as well as the field data gathering and processing technique were introduced briefly. Through two urban active fault survey examples in Fuzhou and Shenyang, the efficiency and limitation about using common offset seismic reflection technique to carry out urban active fault survey were probed. The results show that this technique has the properties of high resolving power, better reconstruction of subsurface structures, and real-time analyzing and interpreting of the investigating results on site. This method can be used to quickly locate the investigating objects accurately in the areas with thinner Q overburdens and strong bedrock interface fluctuations.

关 键 词：共偏移距地震反射法 最佳接收窗口 活断层 分辨率 

分 类 号：P631.425[天文地球—地质矿产勘探]