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文中提出采集纵波和转换波资料的联合观测系统,并全面地叙述了其野外试验情况。利用这种联合观测系统能够迅速而有效地获得纵波和转换波。文中还给出计算转换波时距曲线的一种新方法。根据此法建立了转换波处理的两个模块(转换波动校正和转换波常速扫描),再结合其它常规模块构成了转换波处理新流程。用它处理出良好的转换波叠加剖面,其形态与纵波叠加剖面一致。最后,根据这两种剖面算出了波速比Vs/Vp的变化曲线,它将有助于岩性解释。
In this paper, a joint observation system for the acquisition of P-wave and converted-wave data is proposed and its field experiment is fully described. Using this joint observing system, both longitudinal and converted waves can be quickly and efficiently obtained. The article also gives a new method to calculate the time-distance curve of converted wave. According to this method, two modules of conversion wave processing (conversion fluctuation correction and converted wave constant speed scanning) are established. Combined with other conventional modules, a new conversion wave processing flow is constructed. Use it to deal with a good converted wave superimposed profile, its shape and longitudinal wave superimposed profile. Finally, based on these two profiles, the variogram of the velocity ratio Vs / Vp is calculated, which will help explain the lithology.