纵、横波地震反射法在断裂勘察中的综合应用  

Comprehensive Application of Longitudinal and Shear Wave Seismic Reflection Method in Fault Investigation

作　　者：薛颖飞 李颖 刘屹立 XUE Yingfei;LI Ying;LIU Yili(Jiangsu Institute of Geological Exploration Technology,Nanjing 210000,China;Jiangsu Aviation Ground Detection and Intelligent Perception Engineering Research Center,Nanjing 210000,China)

机构地区：[1]江苏省地质勘查技术院,江苏南京210000 [2]江苏省航空对地探测与智能感知工程研究中心,江苏南京210000

出　　处：《四川有色金属》2024年第3期13-16,共4页Sichuan Nonferrous Metals

摘　　要：目前对城市隐伏断层的勘察精度要求日益增高,而在隐伏断层覆盖层较厚、上断点较浅的工区,单独采用纵波反射法难以实现对上断点的准确刻画。本文以工程实践为例,结合横波反射法在高精度浅层地震勘察中的优势,采用纵、横波地震反射法联合勘探实现高精度断裂勘察。实际应用结果表明:先通过地震纵波反射法,查明基岩以上的层位分布,以及较大规模断点的位置,再通过地震横波反射法,更精确地查明浅部覆盖层的层位特征以及浅部更小规模的断裂,是取得高分辨率浅层地震勘察的有效途径。At present,the precision of urban hidden faults is increasingly required.However,in the work area with thick cover layer and shallow upper break point,it is difficult to accurately depict the upper break point by using P-wave reflection method alone.Taking engineering practice as an example,combining the advantages of shear wave reflection method in high-precision shallow seismic survey,this paper adopts longitudinal and shear wave seismic reflection method to realize high-precision fault survey.The practical application results show that it is an effective way to obtain high-resolution shallow seismic survey by first identifying the distribution of strata above the bedrock and the location of larger scale breakpoints by seismic P-wave reflection method,and then more accurately identifying the stratigraphic characteristics of shallow overlays and smaller scale shallow faults by seismic S-wave reflection method.

关 键 词：地震反射法 横波 纵波 断裂勘察 

分 类 号：P631.4[天文地球—地质矿产勘探]