城市地铁下穿铁路施工安全及沉降控制方法

依托地铁暗挖隧道下穿既有铁路的工程实例,对地下暗挖施工与地上铁路的安全影响进行了分析,根据铁路规程、规范对铁路轨道沉降的要求,总结采用地层加固措施可有效减小轨道沉降,对地层加固、暗挖施工、监测等方面提出了控制要求。

Safety and Settlement Control Methods for Urban Subway Under-passing Railway

Relying on the engineering example of subway underground excavation under-passing the existing railway, this paper analyzes the safety impact of underground excavation and railway, according to requirements of railway procedures and specifications for the railway track settlement, sums up the ground consolidation measures which can effectively reduce track settlement, and proposes control requirements on the ground reinforcement, underground excavation construction, monitoring and other aspects.