Coal field geology condition comparison complication in china, so need accurate and dependable geology survey technique by way of supporting. Impedance inversion can combine log data with high vertical resolution to seismic data observed continually, It improves the portrait and transverse resolution of seismic data greatly and research degree of underground geologic surveying.Nowadays, China coal seismic survey is striding forward toward the direction of ilithology survey, which main geological tasks are to improve the reflection continuity and detection of deep coals, to interpret the lithology of coal beds and roof/bottom of coal beds and so on. In this paper, research work is made for this question, many real 3-D seismic data of coalmine are inversed, and a meaningful attempt is made.
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