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地下岩石中普遍存在着由地应力诱导排列的垂直裂隙或裂缝．地震横波通过这样的介质传播时，会发生横波分裂．文中首先推导了含裂隙介质中零井源距垂直地震部面（ＶＳＰ）记录的解析表达式，然后就不同方位裂隙组成的多层介质使用伪谱法模拟了二分量横波分裂的ＶＳＰ记录，最后利用ＶＳＰ记录的解析式分析了模拟的ＶＳＰ记录中的横波分裂．结果表明，尽管三分量ＶＳＰ记录中包含了横波分裂现象，但未经过特定的计算机处理和显示时，一般不能从ＶＳＰ记录上直观看到横波分裂现象．
Underground rocks generally exist by the vertical stress induced vertical cracks or cracks. When shear waves propagate through such a medium, shear-wave splitting occurs. In this paper, the analytic expressions of zero-well-to-vertical seismic part (VSP) records in fractured media are first deduced. Then the VSP records of two-component shear-wave splitting are simulated using pseudo-spectral method in multi-layered media with different azimuths. The shear wave splitting in the simulated VSP record was analyzed using the analytic VSP records. The results show that although the three-component VSP records contain the phenomenon of shear-wave splitting, the phenomenon of shear-wave splitting can not be directly observed from the VSP records without specific computer processing and display.