摘要
为了获取准确的静校正量,给多波多分量勘探提供准确的近地表纵、横波速度和厚度模型,采用炸药震源进行了三条测线的三分量小折射近地表调查,对三分量小折射表层调查技术进行了初步研究,详细地阐述了利用偏振分析方法分离纵横波的原理,并得出以下认识:纵波初至波的矢端曲线的椭圆率较小,线性偏振特性很强;近炮检距的横波初至难以识别,中远炮检距横波初至波的偏振方向比较稳定,能够代表炸药震源激发的横波的偏振方向,其矢端曲线的椭圆率较大。通过对实际资料的联合解释,给出本工区的纵横波低速层和高速层速度比的范围和纵横波静校正量,并总结了一套三分量小折射资料处理解释流程。
In order to acquire accurate statics and provide accurate near-surface velocity and thickness model of P-and S-waves for multi-wave and multi-component exploration,the near-surface survey by 3-C shallow refraction on three lines has been carried out by using dynamite source.The paper carried out primary study on such technology,expounded in detail the principle using polarization analysis method for separation of P-wave from S-wave and got following knowledge: the ellipticity of hodogram of P-wave first bre...
出处
《石油地球物理勘探》
EI
CSCD
北大核心
2008年第6期652-655,607+742,共6页
Oil Geophysical Prospecting
关键词
三分量
小折射
偏振
横波
表层调查
3-component
shallow refraction
polarization
S-wave
near-surface survey
