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在千枚岩隧道施工中,由于围岩软弱、破碎,在开挖过程中受扰动易出现失稳坍塌等地质灾害事故,严重威胁生命财产安全和工程质量,准确预报隧道地质情况,并做好防治预案,是控制和减少事故损失的前提。结合汶马高速鹧鸪山隧道K181+273~K181+376段的TSP超前地质预报成果与实际开挖结果跟踪对比,分析了TSP超前地质预报技术在变质岩区域隧道千枚岩段的应用状况,并且初步探讨了千枚岩隧道中的小型破碎带和千枚岩片理构造面对TSP超前地质预报技术的响应特征。
In the construction of the phyllite tunnel, due to the weak and broken surrounding rock, geological disasters such as instability collapse and so on, which are disturbed during excavation, threaten the safety of life and property and the quality of the project, accurately forecast the geological conditions of the tunnel and do well Preventive plan is to control and reduce the loss of accidents on the premise. Combined with the results of TSP advanced geological prediction and the results of actual excavation in K181 + 273 ~ K181 + 376 of the Partridge Mountain Tunnel at Wenmai High Speed Railway, the application status of TSP advanced geological prediction technology to the phyllite section of the metamorphic rock area is analyzed. The response characteristics of the small fractured zone and the phyllite structure in the phyllite tunnel to the TSP advanced geological prediction technique are also discussed.