Comprehensive advanced geological prediction technology and application of tunnels

In order to better carry out railway construction in the western region and avoid safety problems caused by adverse geological disasters during tunnel excavation, advance geological forecast research and analysis is carried out. In view of the problem of insufficient accuracy of a single advanced geological forecasting method, the advantages, disadvantages and applicability of the current main advanced geological forecasting methods are compared. Propose a comprehensive advanced geological forecast implementation plan that combines multiple methods and complements multiple physical property parameters. Taking the advanced geological prediction project of a certain railway tunnel as an example. Based on the geological survey method, tunnel face geological sketching method, blasting source method and other forecasting methods, the on-site excavation face was monitored, the development of joint fissure water in front of the tunnel face was successfully predicted, and the surrounding rock grade and support grade were adjusted in a timely manner. Facts have proved that the combined forecasting of multiple methods has greatly improved the accuracy of advance forecasting of poor geology during team road construction.