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目前,国内的工程建设一般工期较短,施工方法选择除考虑经济安全因素之外,更重要的还要考虑如何确保快速掘进。本文通过秦岭3车道高速公路隧道洞口段施工实践,从左右线采用不同的施工方案及明洞施做等方面,详细介绍了隧道洞口段的施工方法,为大断面隧道洞口段施工提供科学依据,供其他类似工程借鉴与推广应用。
At present, the construction period in China generally has a short construction period. In addition to considering the factors of economic security, the choice of construction methods should also consider how to ensure the rapid excavation. In this paper, through the construction practice of the tunnel entrance section of the 3-lane expressway in Qinling Mountains, the construction methods of the tunnel entrance section are introduced in detail in terms of different construction schemes on the left and right lines and the construction of the Myongdong so as to provide a scientific basis for the construction of the large- For other similar projects and promote the use of.