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在纵波勘探中,实际上所采集到的地震数据包含有纵波和横波,因此可以使用弹性波数值模拟来指导纵波勘探和开发。本文首先介绍了弹性波数值模拟的基本理论,包括基本原理、初始条件、边界条件等。然后采用有限差分法进行了二维弹性波数值模拟,从模拟结果可以看出,基于有限差分法的弹性波数值模拟可以很好的模拟实际地震波的传播规律。
In P-wave exploration, the acquired seismic data actually contains both longitudinal and transverse waves, so that elastic wave numerical simulation can be used to guide P-wave exploration and development. This paper first introduces the basic theory of elastic wave numerical simulation, including the basic principle, initial conditions, boundary conditions and so on. Then two-dimensional elastic wave numerical simulation is carried out by finite difference method. It can be seen from the simulation results that the numerical simulation of elastic wave based on the finite difference method can well simulate the propagation law of the actual seismic wave.