鹙窝梁隧道初次支护评价的新方法

隧道施工过程中，沿着洞轴方向进行分区，通过专家经验对隧道各个分区的围岩地质条件、隧道开挖规模进行评价、赋值，以各个分区的不同时段内收敛监测作为评价客观标准，在此基础上计算动态的隧道加固支护需求度。根据隧道不同区段、不同时段内隧道加固支护需求度大小来动态地评价隧道一次支护的效果。在鹙窝梁隧道的应用中，根据加固需求度评价了鹙窝梁隧道一次支护后各个区段在不同时段内支护稳定情况，为隧道安全施工提供判断依据。

A new method of assessing first support in Qiuwoliang tunnel

During construction for tunnel, the tunnel is zoned along its axial direction. With experts’ experiences to assigning the geological condition of surrounding rock and the scale of excavation, and taking the convergence measured in all zones as the impersonal standards in different times, the dynamic degree of reinforcement demand is calculated. Using the degrees of reinforcement demand, the first supports in different zones and in different times are assessed. For application to Qiuwoliang tunnel, the stabilities of supports in different zones and in different times are evaluated from the degrees of reinforcement demand, and the criterion for safe is provided in construction.