Abstract
The laboratory data and simulation data all shows that the seismic response of outburst coal seam is very different from that of non-outburst coal seam. The velocity of outburst coal seam is about 1/3 of the normal coal seam, and the seismic data in outburst zone has the characteristics of longer arrival time, smaller amplitude, lower frequencies. Based on these facts, using impedance inversion, frequency spectrum decomposition and bury depth information of coal seam, this paper tried to predict the coalbed methane accumulation area in a certain coalmine, and the results were basically fit the actual data.
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