某高速公路浅埋段隧道支护参数对比与分析

Comparison and analysis of the supporting parameters of the tunnel in the shallow buried section of a freeway

分析了采用不同支护参数的两座隧道在施工过程中支护结构的变形特点,对施工过程进行了仿真,并对该两座隧道的实际施工效果进行了比较。结果表明,尽管采用现浇模筑混凝土作为初次支护有其刚度大的优点,但也有其不利的一面。对于类似条件下的隧道施工,建议采用锚喷支护作为初期支护。

It analyses the deformation features of the supporting structure of two tunnels using two different supporting parameters in construction, simulates the construction process and compares the actual construction effect of these two tunnels. The result shows that cast-in-place formworking concrete as the first support has the advantage of high rigidness but also has disadvantages. For the tunnel construction under the similar conditions, it advises taking shotcrete bolt support as the first support.