Research on Advanced Geological Prediction of Chunmushan Tunnel
In order to ensure the rapid and safe construction of Chunmushan tunnel,TGP206G tunnel geological advanced prediction system is adopted.Firstly,the data acquisition and processing flow of the system are introduced in detail.Then,the migration and homing results of transverse wave and longitudinal wave,the reflection interface and the specific velocity,as well as the distribution of the main reflection interface are analyzed,and then the geological conditions of ZK22+037-ZK21+887 mileage section of the tunnel are predicted.The research shows that the greater the negative reflection intensity is,the worse the surrounding rock properties are.In this project,a negative strong reflection interface and a negative medium reflection interface appear in the ZK22+037-ZK21+985 section,which can be inferred that the joint fissures in surrounding rocks are well developed and the rock mass is slightly broken.
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