坑道掘进空间反射波超前探测技术

提出坑道掘进空间的任意炮检对反射波观测系统布置、野外工作方法及其数据处理关键技术。对任意空间炮检对数据处理时，利用τ－p域滤波提取前方界面反射波组，进行射线扫描叠加偏移获得坑道掘进空间的二维地质条件成像结果；根据振幅和极性对异常界面提取，完成对巷道工作面前方地质条件的解释与预报。应用结果表明，反射波超前探测技术系统的空间布置合理，数据采集量大，对掘进坑道前方断层构造及其异常界面的位置探测预报比较准确。

Tunnel reflection wave imaging technology and its system during driving space

Put forward own observing system with arbitrary shot receiver pair by simulation experiments in driving space of tunnel，method of fieldwork and the key technique of data processing．During data processing for arbitrary shot receiver pair system，interface reflection waves ahead of the tunnel face were picked up effectively through filtering wave in τ－p field．The 2D imaging results about driving space of tunnel were gained through ray scan migration technology．The abnormal interfaces were picked up according to the amplitude and polarity．And the geological condition ahead of the tunnel was forecasted according to the migration imaging and other property parameters．The applying results express that the system layout of the tunnel reflection wave imaging system(TRIS) is reasonable and it can collect enough and effective data．TRIS can forecast the fault structure and its abnormity interfaces ahead of tunnel.