武汉轨道交通 3 号线越江区间 穿越复杂地层处理措施

依托武汉轨道交通 3 号线王—宗区间工程，结合现场地质和环境条件，分析矿山法+盾构空推的组合工法 对穿越汉江复杂环境及地层的适应性。同时介绍王—宗区间组合工法的工法分界面的选取原则、组合工法盾构段 洞内盾构接收方案、空推段盾构反力不足管片无法顶紧的解决方案、由于初支内径远大于盾构管片外径导致的空 推段管片与初支的空隙填充的解决方案。武汉轨道交通 3 号线王—宗区间工程已取得良好的施工效果，为类似的 越江工程提供参考。

The Treatment Measures for Crossing Complex Stratum of the Cross-river Section in Wuhan Metro Line 3

This article analyses the adaptability of the combined mining method and shield method when crossing the complex stratum of the Han River. It is based on the interval engineering of the Wang-Zong Section in Wuhan Metro Line 3. Moreover, it introduces solutions to the problems, such as how to choose the engineering boundary of the combined method, the shield reception inside the tunnel, tube loosing caused by the absence of shield counter-force in the push section, filling in the gap between the tube and the initial support, etc. The project has achieved good construction results, and it has also accumulated experience for similar cross-river projects.