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复杂地层构造的地震模拟,是地震勘探理论的重要问题。本文提出了一个模拟系统:用有限元素表示复杂地层构造,在此基础上应用射线轨迹法计算二维合成记录,从而得到复杂地层构造的理论剖面。这个系统可以用来模拟构造和岩性,为解释人员提供理论依据。 作者研制了适用于任意复杂地层构造计算的通用程序,并用以计算了某测线的一批模型,所得合成剖面由电视加以显示,最后对结果作了简单的分析讨论。
The seismic simulation of complex stratigraphic structures is an important issue in the theory of seismic exploration. In this paper, a simulation system is proposed: the finite element is used to represent the complex formation, and then the ray track method is used to calculate the two-dimensional composite record to obtain the theoretical profile of complex formation. This system can be used to simulate tectonics and lithology and provide a theoretical basis for interpreters. The author has developed a general procedure applicable to the computation of arbitrary complicated formations and used to calculate a number of models of a surveyed line. The resulting synthetic profile is displayed by television. Finally, the results are briefly analyzed and discussed.