浅地表层界面折射波走时模拟

在工程与环境勘查中进行折射波法勘探时,其勘探对象通常为浅地表的层界面.由于当层界面起伏时无法得到折射波走时曲线的确切表达式,同时为了了解多个层界面的折射波走时曲线之间的相互影响,基于费马原理和斯奈尔定律实现了浅地表多层起伏界面折射波的走时模拟.利用水平层折射波时距曲线公式验证了编制程序的正确性,并模拟了野外常见地质模型的折射波走时.

Travel-time simulation of refraction waves for layer-interfaces in shallow surface

In engineering and environment exploration, the targets of refraction waves are usually aimed at the layer interfaces in shallow underground. To obtain a proper expression of travel-time curves of refraction waves for the undulated interfaces and to understand the mutual influences among the travel-time curves of multiple-interfaces, Fermat＇s principle and Snell＇s law were applied in sim- ulating refraction waves with multiple and undulating interfaces. The program was tested and verified using the travel-time formula based on the model of fiat interfaces. The travel-time curves of refrac- tion waves of common geological models were also simulated.