特大断面隧道施工中较多运用双侧壁导坑工法,双侧壁导坑工法施工中核心土的稳定是隧道开挖的关键,本文通过对影响核心土稳定性的几个因素:核心土临时支护的曲率、核心土的宽度、临时仰拱、对拉锚杆等因素进行了分析,从而为今后双侧壁导坑工法设计和施工提供借鉴和参考。 The construction of large cross-section tunnels is mainly based on the double-wall pilot method. The stability of the core soil in the construction of the double-side pilot tunnel method is the key to tunnel excavation. Through several factors that affect the stability of the core soil, The curvature of the support, the width of the core soil, the temporary inverted arch, the pull anchor and other factors were analyzed, so as to provide reference and reference for the design and construction of the double-side guide pit construction method in the future.