铁路隧道超前地质预报距离的规划与实践

Planning and Practice of Advance Geological Forecast Distance for Railway Tunnel

各类不良地质条件是隧道施工最大的风险源,因此超前地质预报工作的重要性不言而喻。合理规划单次预报距离、动态调整实施计划是提高超前地质预报工作准确度的有效措施。结合天马隧道的超前地质预报工作,统计分析了地震波法(TSP)的适用距离,发现应当避免使用最大有效探测距离,以保证预报准确率。

Various adverse geological conditions are the biggest risk source of tunnel construction,so the importance of advanced geological prediction is self-evident.Reasonable planning of single prediction distance and dynamic adjustment of implementation plan are effective measures to improve the accuracy of advance geological prediction.Combined with the advance geological prediction of Tianma Tunnel,the applicable distance of seismic wave method(TSP)is statistically analyzed.It is found that the maximum effective detection distance should be avoided to ensure the prediction accuracy.