The Study on Application of Advanced Geological Prediction of 1^# Tunnel Named Zhushabao of HU-KUN High-Speed Railway

There are many adverse geological problems and special geotechnical distribution in Zhushabao 1^# tunnel of Shanghai-Kunming high-speed railway,especially the karst problem is outstanding.In order to ensure the safety of tunnel construction,combined with the results of the geotechnical sketch analysis of the facein the construction process,Ground Penetrating Radar(GPR),Tunnel Seismic Prediction(TSP) and Infrared acquisition are respectively used to carry out the advanced geological prediction work on Zhushabao 1^# tunnel.Comparing with this tree methods,come in for Zhushabao 1^# tunnel advanced forecast accuracy level as follows:Infrared acquisition > GPR > TSP,but the TSP have a wider range of application.If the prediction by combining two or more forecasting methods,Zhushabao 1^# tunnel's forecasts success rate basically reached 100 percent,there is no country rock collapseincident during excavation,made a good prediction results,and the forecasting results have been achieved to ensure the safety of tunnel construction and staff.