折射波共检波点叠加技术在活动断层上断点探测中的应用

基于折射波时距曲线方程分析共检波点域折射波叠加成像技术原理,分别在共中心点域和共检波点域对二维断层模型的初至折射波进行叠加成像,并对河西走廊一条二维地震资料进行对比处理。模型研究和实际应用结果表明,共检波点域折射波叠加方法较共中心点域具有更高的横向分辨率,结合其他资料可较准确地判定活动断层上断点的空间位置。

Application of Refractive Common-Receiver Stack Technology in Detecting Upper Breakpoints of Active Faults

Based on the refraction time-distance curve equation, we anayze the principle of common-receiver refraction stack imaging technology. The refraction wave of the 2D fault model is stacked in common midpoint domain and common-receiver domain respectively, and the actual 2D seismic data of Hexi corridor is processed comparatively. The results of model and practical application show that the common-receiver domain profile has higher lateral resolution than the common midpoint domain. This method, in combination with other data, can accurately determine the spatial location of fault points on active faults.