In order to effectively detect coal thickness,structure,goaf,and then guide the coalmine safety with high-efficient production,SUMMIT-ⅡEX channel wave seismograph is used in Yima Coal Group.Transmission method is applied to detect the coal thickness.Based on the negative relations between the wave velocity and the coal seam thickness,the quantitative interpretation of the coal thickness is realized and the prediction accuracy reaching 86%.Reflection method is applied to detect the strike fault with the refl...