本文主要参考 H.Gebrande提出的射线追踪原理和模型描述,用 ALCOL 语言编写了一份专用计算程序,可以计算连续起伏界面组成的多种速度模型的走时曲线和射线轨迹。本文还对此程序进行了功能和精度检验,最后,用北京周围地区的乐亭——张家口地震测深剖面和沙特阿拉伯地震测深剖面进行了实算,取得较为满意的结果。 In this paper, we mainly refer to the ray tracing theory and model description proposed by H. Gebrande. We write a special calculation program in ALCOL language to calculate the travel time curve and ray trajectory of a variety of velocity models composed of continuous undulating interfaces. In this paper, the function and accuracy of this program are also tested. Finally, the calculations are made with the Laoting-Zhangjiakou seismic sounding profile and the Saudi Arabia seismic sounding profile in the area around Beijing, and satisfactory results are obtained.