黏土水泥浆液在盾构法地铁隧道穿越松散回填区施工中的应用

Application of Clay-cement Slurry in Construction of Shield Tunneling Cross the Loose Backfill Area

在城市轨道交通的大力发展的同时,复杂多变的工程地质条件为地铁工程施工带来了各种技术难题。乌鲁木齐轨道交通1号线在建设过程中,盾构法地铁隧道需穿越采砂筛分后的松散卵石回填区特殊地层,通过对注浆材料的创新,采用黏土水泥浆液替代常规水泥浆,有效地对该地层进行了加固改良,保障了盾构施工的安全,同时又取得了良好的经济效益与环境效益。对黏土水泥浆液应用于地铁工程施工的经验进行了总结,以期为类似工程提供参考依据。

With the rapid development of urban rail transit,the complex and changeable geological conditions of engineering have brought various technical problems to subway construction.During the construction of Urumqi Rail Transit Line 1,the shield tunnel needs to pass through the special stratum in the loose pebble backfill area which already has been mined and screened.Clay-cement slurry is used to replace the conventional cement slurry.The innovation of grouting materials effectively reinforces and improves the stratum.It not only ensures the safety of shield construction but also achieves good economic and environmental benefits.The application of clay cement slurry of subway construction in this paper is summarized to provide reference for similar projects.