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隧道超前地质预报对于预测围岩情况、指导隧道施工有着重要意义。本文介绍了GPT技术的原理和在国内外应用的现状,结合马留山隧道的地质超前预报,分析论证了GPT超前地质预报系统在隧道超前地质预报中应用的有效性,得出了马留山隧道左线ZK50+735～ZK50+935区段200m范围内的围岩属于中强风化砂岩,局部有渗水,稳定性和完整性稍差,属于IV级围岩,说明了GPT超前地质预报技术是保证隧道施工顺利安全施工的重要地质预报手段,展示出该系统在隧道施工中的广阔应用前景。
The advanced geological forecasting of the tunnel is of great significance for predicting the surrounding rock conditions and guiding the tunnel construction. In this paper, the principle of GPT technology and its application in the world are introduced. Combined with the geological advance prediction of the Malunshan Tunnel, the validity of GPT advanced geological forecasting system applied in the advanced geological prediction of the tunnel is analyzed. The results show that the left The surrounding rock within the range of 200m from line ZK50 + 735 ~ ZK50 + 935 belongs to moderately weathered sandstone, with partial seepage, which has a little stability and completeness and belongs to the grade IV surrounding rock, indicating that GPT advanced geological prediction technology is the guarantee tunnel The important geologic forecasting means for smooth and safe construction of the project shows the broad application prospect of the system in tunnel construction.