Excavating tunnel under existing passenger transferring subway station is of very importance. Stringent risk assessment and control must be applied to keep operation of the subway station safely. The paper mainly introduces the risk assessment and the third-party monitoring measurement of a new tunnel construction underneath a Beijing Subway Wanshou Road Station. This station is a passenger transferring subway station. The tunnel construction might result the settlement of the subway station structure and make the rail distort. It might impact the safety of station operation. The project used methods of structure measuring, construction numerical simulation and the third-party monitoring measurement. The results show that the station was safe and was operated safely. The results presented in the paper may give a good reference to other similar projects.%隧道下穿地铁既有车站为重大风险工程,下穿拟换乘车站时更应进行严格的风险评估与控制,以保证工程施工前后地铁车站的安全运营.本文主要就某新建隧道下穿北京地铁拟换乘车站万寿路站的风险评估和第三方监测进行研究.新建隧道施工可诱发既有车站结构的沉降,造成车站轨道过量变形,进而影响地铁安全运营,本工程采用了结构检测、施工影响模拟预测和第三方监测等工程风险评估和控制手段,结果表明万寿路站受隧道施工影响较小,地铁运营未受影响.
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