针对广深港狮子洋隧道盾构主轴承严重损坏事件,分析主轴承严重损坏的原因,认为轴承内部进泥浆及电焊随意搭铁是导致主轴承损坏的主要原因,对于轴承出现的前期症状未引起足够重视是导致主轴承报废的根本原因。针对轴承损坏原因给出对于盾构轴承使用及管理方面的一些建议,预防和避免类似事件的发生。 In view of the serious damage event of shield main bearing of Shiziyang tunnel in Guangzhou-Shenzhen-Hong Kong Railway, the reason of serious damage to the main bearing is analyzed. It is considered that the main cause of damage to the main bearing is the random connection of mud and electric welding inside the bearing, Pay enough attention is the root cause of the main bearing scrapped. Aiming at the reasons of bearing damage, some suggestions on the use and management of shield bearings are given to prevent and avoid similar accidents.