城市地铁盾构联络通道建造关键技术及应用

Key Technologies and Applications for the Construction of Urban Metro Shield Contact Channels

随着国家城镇化发展的不断推进,城市人口基数大幅提升,地上空间显得越发匮乏,对地下空间的探索,实现城市功能需求也越来越重要,城市地下铁道工程迅速提高,盾构法以其方便性、经济性等特点得到了广泛应用。联络通道的施工方法有冻结法、机械法等,机械法联络通道施工工法包含盾构法和顶管法。本文以城市轨道交通联络通道工程为背景,研究了联络通道线型与施工方法的选取,归纳了盾构法建造联络通道的技术路线。该方法效率高且安全性好,大大缩短城市地铁联络通道施工工期和成本,为不稳定地层中城市地铁联络通道的建造提供了一种新的技术选项。

With the continuous promotion of the country’s urbanisation development, the urban population base has increased significantly, the above-ground space appears to be more and more scarce, the exploration of underground space and the realisation of the functional needs of the city are becoming more and more important, the urban underground railway project is rapidly increasing, and the shield method is widely used for its convenience and economy. The construction methods of liaison channel include freezing method, mechanical method, etc. The mechanical method of liaison channel construction method contains shield method and pipe jacking method. This paper takes urban rail transit connection channel project as the background, studies the selection of the line type and construction method of the connection channel, and summarises the technical route of the shield method for the construction of the connection channel. This method is highly efficient and safe, which greatly reduces the construction period and cost of urban metro links and provides a new technical option for the construction of urban metro links in unstable ground.