Application of the TGP206 geological prediction method for a tunnel in the karst mountains

Geological conditions in front of the tunnel is complex and changeable, in the kasrst zone, the geological disaster, such as water inrush, cave and collapse often occur in the tunnel construction, which make a serious impact on the safety of the tunnel construction, progress, economic benefits. In order to guarantee the safety, geological prediction must be carried out in tunnel Construction. This paper mainly introduces principle, data processing of TGP206 tunnel geological prediction system and its several application in prediction for Zhongxing tunnel. Through analyzing the reflected signals in the karst area, it can accurately predict the rock parameters as well as the location of the cave in front of the tunnel. It is a guiding significance for tunnel geological prediction in similar geological conditions to prove the correctness and feasibility of theory and techniques of the system.