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单层煤层的工业可采厚度一般为1．5m左右。当断层的断距超过1／2煤层厚度时，综合采煤应用技术就会受到影响。为此，就要进一步提高地震剖面的分辨率。本文给出的时间域稳健迭代反演方法，可将常规地震时间剖面的视主频50Hz提高到460Hz，使4m厚的煤层项底反射波完全分离。文中简述了此方法的原理，应用条件要求地震记录的信噪比大于7，信噪比越高，此方法反演结果的可靠性越大。此法迭代收敛速度快，能够保持实际数据所具有的宽带高频特性。
The industrial recoverable thickness of single seam is generally about 1.5m. When the faults are more than 1/2 seam thickness, the integrated coal mining technology will be affected. To this end, it is necessary to further improve the resolution of seismic sections. The time domain robust iterative inversion method given in this paper can raise the apparent dominant frequency 50Hz of the conventional seismic time profile to 460Hz and completely separate the 4m thick coal seam bottom reflected wave. In this paper, the principle of this method is briefly described. The application conditions require that the signal-to-noise ratio of seismic records is greater than 7. The higher the signal-to-noise ratio, the greater the reliability of the inversion results. This method iterative convergence speed, to maintain the actual data with broadband high-frequency characteristics.