论文部分内容阅读
通过对典型地形起伏的６个水平均匀层状介质理论地质模型的速度谱计算和分析，阐明了在复杂地形条件下用常规水平基准面方法提取叠加速度，不仅达不到地震勘探对速度精度的要求，而且产生假的纵、横向变速规律。证明了采用滑动基准面〔１〕方法提取叠加速度，既可消除地形起伏的影响，又可满足地震勘探对速度精度的要求和如实反映地层速度。
Based on the calculation and analysis of the velocity spectra of 6 horizontal uniform stratified media theoretical geologic models of typical relief, it is clarified that using the conventional horizontal datum method to extract the superimposed velocities under complex terrain not only fails to reach the accuracy of seismic exploration Requirements, but also produce fake vertical and horizontal speed changes. It is proved that the method of sliding reference plane [1] can be used to extract superposition velocity, which can not only eliminate the influence of topography fluctuation but also meet the requirements of seismic exploration for velocity accuracy and accurately reflect the formation velocity.