地铁暗挖隧道下穿国铁超前加固技术

Advanced Reinforcement Technology for Mined-excavation Construction of Subway Tunnel Crossing Underneath Existing Railways

为确保地铁暗挖隧道下穿京哈铁路和既有轻轨轨道的施工安全,控制既有运营轨道的沉降与隆起,掘进前用超前水平加固技术对地层加固止水,根据监测数据实时调整注浆各相关技术指标,安全顺利地完成暗挖隧道下穿铁道施工任务.

To ensure the construction safety of the subway tunnel crossing underneath the Beijing—Harbin Railway and the existing light railway,an advanced horizontal reinforcement technology of ground was introduced to reduce the settlement and uplift of existing operational rail.According to the real—time monitoring data,grouting was in time performed in accordance with corresponding standard,as a result,the mined·excavation construction of subway tunnel crossing underneath existing railways was completed successfully.