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为实现隧道施工掌子面前２０米以远不良地质预报，尤其是针对“断层”的预报，对层界面为倾斜平面的分层均匀的三层理论模型进行了方法研究，并编制了三维和二维的用反射波走时数据的层析成象软件，用逐层反演方法作反演，计算结果与此“模型”三层界面和各层速度基本一致。又对“遂道模型”观测超声波仪波形记录，以及云台山隧道施工掌子面前的地震仪波形记录，进行多波分析，获得界面反射波走时数据后，作反演计算，预报结果与“隧道模型”三界面以及云台山工程开挖后的隧道左壁“破碎带”和“断层”界面基本一致。本文对隧道安全施工有参考价值。
In order to realize unfavorable geologic forecast 20m away from the face of tunneling construction, especially for the prediction of “fault”, the paper studies the stratified three-layer theoretical model with inclined plane and the three- Dimensional tomographic imaging software using time-of-flight data from reflection waves was inverted by layer-by-layer inversion method. The calculated results are consistent with the velocities of the “model” three-layer interface and each layer. Then the waveform records of the “Tunnel Model” observation ultrasonic instrument and the waveform records of the seismograph before the construction of the Yuntaishan Tunnel are analyzed, and the multi-wave analysis is performed to obtain the data of the interface reflection wave travel time. Then the prediction results are compared with “Tunnel Model ”interface and the left wall“ broken zone ”and“ fault ”interface of the tunnel after excavation of Yuntaishan Project are basically the same. This article has reference value for tunnel safety construction.