Advanced Geological Forecasting in the Main Plant of Hydropower Stations

Abstract

Based on the TGS360Pro advanced geological forecasting method, a three-dimensional geological forecasting system was developed for a hydropower station tunnel with a long route, significant burial depth, high groundwater level, and multiple large fault crossings, highlighting major engineering geological issues. Research shows that by applying the solid-liquid dual-phase medium theory, combined with on-site working conditions and geological information revealed at the face, and conducting a comprehensive analysis of corresponding stress, water content probability, longitudinal wave velocity, transverse wave velocity, the ratio of longitudinal to transverse wave velocities, Poisson's ratio, Young's modulus, and surrounding rock hazard levels, predictive forecasting results can be obtained. The differences in data and wave field characteristics were analyzed, and successful application was achieved at a certain hydropower station. This method effectively addresses the challenges of advanced geological forecasting in hydropower station tunnels, with excavation verification yielding good results.