By the example of geological prediction in Wangchao Coal Mine,the practical change rules of water turbidity before water pouring out at working face and the ubiquitous problems in current geological predication are analyzed and the basic principls are put forward.

Though the application of geological sketching in Wuchiba Tunnel,this paper discusses the importance of geological sketching to tunnel construction and the realization of long distance geological prediction using geological sketching method.

According to a passenger line tunnel construction that may exist in the process of engineering geological problems, pointing out that this section of tunnel geological prediction ahead of key and difficult, proposing methods which are based on geological, geophysical exploration as a primary means to a comprehensive geological forecasting techniques.

The application of geological radar in advanced geological forecast of Changwuling tunnel;

The application of advanced geological forecast in south-to-north water transfer project;

This paper expounds the measuring principles of TSP203 and its application achievements in Tongluoshan Tunnel, and puts forward some suggestions on increasing the precision of the geological forecast by using TSP203.

The paper expounds the formation condition,partition of development phase and different karst cave kinds,it discusses on the geology forecast work by the tunnel passing the karst.

Research purposes: The purposes are to seek the key points of geology forecast in advance for tunnel construction,find problems and make clear the thoughts on geology forecast in advance for current construction of tunnel.