oa Reverse Time Migration of Tunnel Seismic Reflected Data

Reverse time migration method with forward modelling zero-offset seismic data is applied to the prediction ahead of tunnel face. The numerical model with soft rock mass zone and fault zone are used to test the reverse time migration for locating the positions of fault zone ahead of tunnel face. The numerical simulation results have proven that reverse time migration with zero-offset data is exactly able to image the fault zone in un-excavation ahead of tunnel.