Combined with the general situation of project,it introduces the features and constructing course of tunnel area,analyses superior forecasting methods in constructing course,elaborates problems and processing measures in different lavas,can offer reference for familiar projects.

Research purposes: The geological disasters of collapse,water bursting and roof falling often occur in construction of railway tunnel because of unclear geological condition,so it is very necessary to do the researches on the methods of geological forecast in advance and on the basic principle and engineering application of TSP203 System that is one of main means for geological forecast.

Engineering Geology Prediction and Safe Construction;

The application of TSP-203 system in prediction of Dazhiping tunnel;

Research progress in tunnel geological prediction;

Application of GPR System in Advanced Prediction of Rock Structure in Front of Face during Expressway Tunneling;

The advanced prediction for tunnels has been a subject highly concerned by engineering and geological circles in recent years.

The application of geophysical exploration technique in advanced prediction of tunneling has the advantage of high speed and accuracy.

With instance of successful application of geological radar method and seismic reflection method in advance forecast for Kuigang Tunnel construction,this paper introduces principle and method of carrying out tunnel geological advance forecast by geological radar method and seismic reflection method.

That will make a contribution to promoting application,summing up experience,increasing forecast accuracy and meeting requirements of project construction with the aid of the advance forecast technique applied in tunnel constructi.