综合超前地质预报技术在育王岭隧道破碎带预报中的应用

Application of Comprehensive Advanced Geologecal Forecast Technolegy for the Fracture Zone in Yuwangling Tunnel

隧道掘进穿越断层和节理裂隙破碎带施工过程中易发生塌方、涌水突泥等灾害事故,为保证隧道穿越多裂隙带的施工安全,降低施工灾害发生的概率,施工前有必要对隧道进行超前预报。本文依托育王岭隧道,通过地质分析研究了育王岭隧道的破碎带发育特征,利用TSP超前预报系统、地质雷达和红外探水等物探手段对育王岭隧道的地质缺陷体进行探测,探测结果与现场实际揭露情况基本吻合。综合采用TSP超前预报系统和地质雷达可较为精确预报岩溶区隧道的破碎带发育情况,红外探水基本可以预报裂隙含水情况,其预报手段可供类似工程借鉴。

Disasters occurred in tunneling through fault and fracture zone in the process of the construction,such as collapses and water mud bursting accidents.It is necessary to carry out geologic forecast of tunnel before construction,to ensure the construction safety of tunnel through fractured zone.The fault crushed zone development characteristics of Yuwangling Tunnel,and the unfavorable geological conditions were predicted by using the tunnel seismic prediction,ground penetration radar and infrared ray predicting water method.The comparisons between the predict results and actual situation shows that the predict results are fairly consistent with the field-observed results.Integrated using the TSP and geological advanced prediction system radar can more accurately forecast the fracture situation of the tunnel in tunneling through fault and fracture zone,the infrared ground water basic can forecast fracture water.The method could be referred by the similar project.