为解决既有基坑锚索侵入地铁车站基坑导致车站基坑局部地下连续墙无法施工的难题，分析处理既有基坑锚索侵入地铁基坑的方案设计难点，对既有基坑采取坑内部分土方回填、增设内支撑和向车站基坑侧放坡3种处理方案进行比选，选取最为经济可行的向车站基坑侧放坡方案，即在完成向车站基坑侧放坡的措施后，在既有基坑坑底回填土方，接着依次拔除锚索，并通过调整车站基坑内支撑的型式，保证车站基坑开挖期间既有基坑与车站基坑的安全。采用PLAXIS软件模拟向车站基坑侧放坡方案在既有基坑锚索拔除后及车站基坑开挖时的基坑和围护结构变形情况，并通过现场监测进行验证。结果表明，实际监测数据与数值模拟结果较为吻合，采取向车站基坑侧放坡方案处理既有基坑锚索侵入地铁基坑措施合理可行。

Owing to the cables of existing foundation pit intruding into metro station foundation pit, partial underground diaphragm wall of metro station foundation pit is difficult to construct. Hence, the design difficulties of removing the cables of existing foundation pit is analyzed, and 3 schemes for existing foundation pit, i.e. soil backfilling in pit, adding inner support and sloping to metro station foundation pit, are compared and selected. The scheme of sloping to metro station foundation pit with good economic benefits and feasibility is chosen. The detail of the scheme chosen is soil backfilling at the bottom of existing foundation pit after sloping, removing cables orderly, and adjusting the inner support of metro station foundation pit. The deformation of the foundation pit and retaining structure after cables removing is numerically simulated by software PLAXIS and verified by site monitoring data. The study results show that the site monitoring data coincide with the simulation results, and the scheme selected is rational and feasible.