基于实地监测的常用隧道涌水量预测方法对比分析

Comparative Analysis of Forecasting Method to Water Inflow in Tunnel Based on Field Monitoring

[目的]揭示隧道发生涌水病害的内在原因,分析目前各种预测隧道涌水量计算方法的准确性和适用性,为相关工程及理论公式的进一步完善提供参考。[方法]采用工程地质调查测绘、钻探、物探、现场及室内实验等方法,将隧道长期涌水量记录数据与隧道涌水量计算公式所得结果进行对比。[结果]全面掌握了事故段工程地质及水文地质情况,不同公式所得涌水量预测结果相差较大。[结论]隧道发生涌水病害的内在原因主要是附近民用水塘长期蓄水;采用古得曼公式所得的预测结果与工程实测值最为接近。

[Objective] To reveal the inner causes of tunnel water gushing,analyze accuracy and applicability of the method of calculating the water inflow in the tunnel,to provide reference for further perfecting relevant project and theoretical formula. [Method] By carrying out engineering geological survey,drilling,geophysical prospecting,field and laboratory tests and combined with the long tunnel inflow water record data,the comparison and analysis were made on the method of calculating the water inflow in the tunnel. [Result]Engineering geological and hydrogeological investigation of the tunnel was made clear and it showed that the results between different formulas differ greatly. [Conclusion]The inner cause of tunnel water gushing is mainly due to long- term storage of water nearby and the prediction results from Goodman formula is more accurate than those from other formulas.