本文从实际出发,介绍了三维地震勘探的原理、野外施工方法和资料处理方法。提供了在121机上处理三维地震资料的步骤和程序框图。对三维归位的一些参数进行了试验,并在实地进行了三维地震勘探试验,取得了较好的地质效果,比水平迭加、二维归位剖面有明显的改善。 Based on the actual situation, this paper introduces the principle of 3D seismic exploration, field construction methods and data processing methods. The steps and block diagrams for processing 3D seismic data on the 121 machine are provided. Some parameters of three-dimensional homing are tested. Three-dimensional seismic exploration tests are conducted in the field, and good geological effects have been achieved. Compared with horizontal stacking, the two-dimensional homing profile is obviously improved.