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南京市龙潭港疏港一级公路在栖霞山铁路隧道北侧呈近距离平行延伸 ,挖方路基距离铁路隧道的最小净距仅为 11.9m ,按相关规范推算现有铁路隧道宽 9m ,高 8.5 m。为了确保施工期间沪宁铁路栖霞山隧道的正常运营 ,必须对设计路线给予正确合理的分析评估 ,以保证设计方案合理、参数取舍可行 ,最终对路堑的施工方法、施工方案提出了工程预防措施
Nanjing Longtan Port Shugang Class I Highway runs parallel to the north of Qixiashan Railway Tunnel. The minimum clear distance from railway tunnel to excavation subgrade is only 11.9m. According to the relevant specifications, the existing railway tunnel is 9m wide and 8.5m high . In order to ensure the normal operation of the Qixiashan Tunnel of Shanghai-Nanjing Railway during the construction period, the design route must be given a correct and reasonable analysis and assessment to ensure that the design scheme is reasonable and the parameters are acceptable. Finally, engineering preventive measures are put forward for the construction methods and construction plans