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基于跨孔测量方式分辨率高、探测范围广、结果图像直观等特点,本研究基于前人的工作选用有限差分方法进行跨孔地震波波动方程数值模拟,通过对模型采用边界吸收等处理,最后获得地震波在地下介质中传播的波场快照以及检波器接收记录。主要通过对断层、低速球、层状介质三种模型透射波波场特征的探讨,研究地下地质体结构,并且在方法上验证了有限差分法是一种计算速度快、占用内存小、编程简单的方法,在理论上验证了跨孔地震方法受外界干扰因素影响小,可推断、了解地质构造,为工程勘察提供依据。
Based on the characteristics of high resolution, wide range of detection and visualization of the result image, this study selects the finite difference method based on the previous work to simulate the wave equation of trans-hole seismic wave. By using the boundary absorption, Wavefield snapshots of seismic waves propagating in the subterranean media and receiver reception records. Mainly through the fault, low-speed ball, layered medium three models of transmission wavefield characteristics of the study of underground geological body structure, and verified by the method of finite difference method is a calculation speed, small footprint, simple programming The method verifies that the cross-hole seismic method is less affected by external disturbing factors, and can be inferred and understood the geological structure to provide the basis for engineering investigation.