盾构法过江隧道埋深的确定方法

作为加速城市化进程和改善交通现状的重要途径，地铁线网日益密集，地铁建设进入高潮阶段，随之而 来的地铁区间穿江过海的情况逐渐增多，所以该类地铁隧道的设计技术问题需要重点深入研究。以哈尔滨地铁某 过松花江区间为依托，对过江隧道埋深的主要控制因素及过江隧道合理埋深进行研究。过江区间盾构隧道上方覆 土层过薄，可能会出现塌方或者涌水等严重事故。通过分析过江隧道埋深的主要控制因素，如两端车站埋深、隧 道纵向线路坡度、施工期间安全覆土、运营期间抗浮要求等，得出过江盾构隧道的设计埋深，总结出一套完整的 盾构法过江隧道埋深的确定方法，以期为类似工程提供借鉴和参考。

The Determination Method of Buried Depth of Tunneling by Shield Method ZHANG Liancai, ZHANG Yang, MA Xiaolong, HE Lisha

Currently, to promote the urbanization process, and as an important approach to improve the present traffic situation, the subway network is becoming more and more intensive; subway construction is at a climax stage, followed by a gradual increase in subways across a river or sea situation, and further study is needed to focus on technical problems in metro tunnel design. The main control factors, the buried depth of the tunnel and the reasonable burial depth of the tunnel, are studied. The overlying strata above the shield tunneling are too thin, and there may be serious accidents such as landslides or flooding. Through the analysis of the main controlling factors for a deep buried tunnel across a river, such as embedded depth of both ends of the station and tunnel longitudinal slope line, during the period of construction safety turns the soil, anti-floating during operation requirements, etc., to develop a river-crossing shield tunnel design for buried depth, and summarize a set of complete shield methods to determine the buried depth of a tunnel across the river, so as to provide a reference for similar projects.