前言在浅层地震初至折射波法勘探中,时常遇到变速覆盖层即不均匀的地表上部土层或风化层,其地震波速并不是常数,往往随深度的增加而变大。我们把这种随深度增大的地震波称之为潜射波,其时距曲线称之为潜射波时距曲线。本文将讨论覆盖层波速具有明显梯度,下层介质为常速高速层的界面上产生折射波的情况。并导出了潜射波时距曲 Foreword In the shallow seismic first arrival refracted-wave survey, we often encounter variable speed coverings, that is, uneven soil layers or weathered layers on the surface. The seismic wave velocity is not constant and tends to increase with depth. We call this type of seismic wave with increasing depth as a latent radio wave, and the time-span curve is called the latent time curve of the submarine wave. This article will discuss the obvious gradient of the wave velocity of the cover layer, and the refracted wave generated at the interface of the high-speed layer at the normal speed. LSD