在煤田地质勘探工作中经常遇到倾斜反射界面,在这种情况下如何简单精确地计算地层的有效速度,对野外地震勘探工作的质量及效率都有很重要的意义。过去教科书上也有计算方法,本文所介绍的方法与过去的方法相比,既简便,又精确。为了计算方便起见,先将文中采用的符号作如下说明(见图): In coalfield geological exploration work often encounter inclined reflection interface, in this case how to simply and accurately calculate the effective velocity of the formation, the quality and efficiency of field seismic exploration are of great significance. In the past, textbooks also have calculation methods. The methods described in this paper are simple and accurate compared with the past methods. For the convenience of calculation, the symbols used in the text are described as follows (see figure):