【摘要】 基于浅埋偏压隧道的特殊性,可以针对性的设计和合理的选用施工方案,确保施工安全、有序的进行。文章以在建的大岳高速公路向家隧道为依托对象,对隧道浅埋偏压洞口段拟定了两种不同的开挖施工方案,运用有限差分软件FLAC3D建立了数值计算模型,对比分析了两种施工方案的隧道周边位移、围岩和初期支护的变形与受力规律的差异,比选出适宜的施工方案,为类似的浅埋偏压隧道设计、施工,提供了有益参考。更多还原

【Abstract】 The particularity of tunnel shallow buried bias based on the specific design and reasonable selection of construction scheme,to ensure the construction safety and orderly. Taking in the construction of highway tunnel for Yue to house the relying object, for shallow bias tunnel entrance designed two kinds of different excavation construction scheme, by using the finite difference software FLAC3 D to establish a numerical calculation model, a comparative analysis of two kinds of construction schemes of the tunnel surrounding rock and primary support displacement, deformation and stress of the differences, the construction scheme is selected as appropriate, similar to that of the shallow bias tunnel design and construction, provides the beneficial reference.更多还原