水下隧道属于建设条件复杂、工程规模大的系统工程，建设期风险事件频发，应引入适应于水下隧道工程特点的先进风险管理方式。港珠澳大桥首次将职业健康、安全及环境（HSE）风险管理手段应用到海底隧道建设过程，针对沉管隧道施工过程中主要涉及的HSE方面的风险源及风险事件，确定出HSE风险评价中采用LEC法的评分指标，对工程建设期的HSE类危险源进行分类识别与评价，结合量化的HSE风险管理目标，制定出相应的对策措施，对可能带来严重后果的3级以上风险进行整改完善，并针对工程中具有显著高风险的中华白海豚保护与异常极端天气作业的2项2级重大风险事件制定应急预案。HSE风险管理在港珠澳海底隧道长达7年的建设过程中起到了重要的风险管控与指导作用，有效规避了工程实施过程中各种职业健康、安全及环境类高风险事件的发生，管理方式与措施均可为同类工程起到较好的示范作用。

The underwater tunnel is a systematic engineering with complex conditions, large scale and high risk. Hence, the healthsafetyenvironment (HSE) risk management system is applied to Hong KongZhuhaiMacau Link (HZML) for the first time. The risk sources and risk incidents of immersed tunnel construction related to HSE are introduced; the evaluation indices of HSE risk evaluation by LEC method are determined; the HSE risk sources are identified and evaluated; countermeasures are put forward according to quantized HSE risk management object; the potential risks higher than Level 3 which would induce serious consequences should be paid more attention to and improved; and emergency plan is also made for two Level2 rick incidents of Chinese white dolphin protection and extremely abnormal weather with a significantly higher risk. The HSE risk management system has played an important role in the construction of the immersed tunnel of HZML, and good effect has been achieved.