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随着城市地铁建设的快速发展,新建地铁隧道工程穿越既有构筑物的概率必将逐步增大,为地铁隧道施工带来了诸多工程问题。基于在建深圳地铁7号线2标安托山站至农林站区间隧道下穿既有广深高速公路施工工程,参考已有的下穿工程技术标准与工艺措施,针对上软下硬复杂地层和矿山法施工特点,采用不同的施工工法与支护措施,并在下穿区域通过围岩径向注浆和变形控制,确保下穿隧道安全通过运营中的广深高速公路。
With the rapid development of urban subway construction, the probability of newly constructed subway tunneling projects crossing existing structures will surely increase gradually, which brings about many engineering problems for subway tunnel construction. Based on the construction of the existing Guangshen Expressway under the tunnel between Antuo Mountain Station and Nonglin Station, No. 2 in Antai Metro Line 7 under construction in Shenzhen, reference is made to the existing technical standards and technical measures for under- And the construction method of the mining method, adopting different construction methods and support measures, and controlling the radial grouting and deformation control of the surrounding rock in the lower wear area to ensure the safety of the tunnel passing through the operation of the Guangzhou-Shenzhen Expressway.