Advanced geological forecasting was performed using the TSP203 equipment for the Heping Tunnel and Chongli Tunnel of the Taichong Section of the Taixi Railway. Building upon the analysis of existing geological data, geophysical prospecting methods were utilized to detect, analyze, interpret, and forecast the engineering geological and hydrogeological conditions ahead of the tunnel excavation face, as well as the engineering properties, location, occurrence, and scale of adverse geological bodies, with corresponding measures and recommendations proposed. This work provides a basis for the proper selection of excavation methods, support design parameters, and construction scheme optimization, while furnishing early warning information to prevent potential catastrophic accidents such as water inrush, mud outburst, and surrounding rock instability in tunnels, thereby enabling construction units to formulate contingency plans in advance and ensuring construction safety. The research examines the convenience, stability, and efficiency of the TSP203 equipment in tunnel construction, seeks to improve certain limitations in its application, and exploits its exceptional performance in complex geological environments, with the aim of reducing costs, alleviating labor intensity, and better serving engineering construction.