关键词: 高寒高海拔地区, TSP, 地质雷达, 超前钻探

Abstract: In alpine and high-altitude areas, the engineering geological background is complex, geological disasters occur frequently, and the ecological environment is fractured. To explore the applicability of the advanced geological prediction system in the alpine and high-altitude geological environment, this paper, based on a certain tunnel section in alpine and high-altitude area, analyzes the signal characteristics of unfavorable geological bodies in the tunnel based on different combined modes of advanced geological prediction, and further verifies the accuracy of the advanced geological prediction system in alpine and high-altitude areas by combining with the on-site excavation situation. The results show that conventional single advanced geological prediction detection methods are prone to unstable and messy signal ripples and insignificant geological radar signal characteristics in alpine and high-altitude areas, which interfere with the correct prediction of unfavorable geological bodies in tunnels. The use of multiple geophysical combination signals with different sensitivities can make up for the geological radar signal characteristics of 21-30 m and improve the prediction accuracy of unfavorable geological bodies in alpine and high-altitude tunnels.

Key words: alpine and high-altitude areas')">

alpine and high-altitude areas, TSP, geological radar, advanced drilling