3D seismic processing for subsidence column detection applied in Dongpang coal mine

Based on the analysis of subsidence column prospecting in Dongpang coal mine,the effect is discussed for subsidence column interpretation in 3D seismic vertical section,hole-linked section,horizon time slice and coal-layer attribute slice.With the seismic migration velocity of 90%,95% and 103% to stack velocity,three different 3D data cube have been interpreted and their effect is compared in this paper.The results show that the 95% migration velocity is better and coal-layer attribute slice technology is the best in subsidence column prospecting.