According to the research on the construction method at 700 m super shallow expansive soil section at the entrance of Tuanshanzi Tunnel of Northeast Ring Line of Shenyang railway hub, the paper introduces and analyzes the selection of the construction scheme for the double side drift method in the tunnel shallow and expansive sections and their optimization, the construction craft and the construction organization, so as to provide some reference for the construction at the same layer.%通过对沈阳铁路枢纽东北环线工程团山子隧道进口700 m超浅埋膨胀土地段的施工方法研究,介绍和分析了在隧道浅埋及膨胀土地段中双侧壁导坑法施工方案的选择及优化、施工工艺和施工组织,为相同地层的施工提供借鉴。
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