盾构隧道穿越西安永宁门城墙段的施工加固措施

摘要

根据西安城墙的结构特点及其工程地质、工程设计和施工工艺情况,确定了西安地铁二号线穿越西安城墙永宁门段施工加固方案及监测项目.监测数据分析显示,地铁施工对城墙永宁门区段的影响在预期的控制范围内,施工加固措施及监测方案可行,达到了保护文物的目的.%According to the structural characteristics of Xi'an citywall,the engineering geology,design and construction process,the reinforcement measures and monitoring projects of Xi'an metro Line 2 are determined,which crosses beneath the Yongning Gate of Xi'an old citywall.The observed data show that the influence of tunnel construction on Yongning Gate walls is within the expected control range,the reinforcement measures and monitoring schemes are feasible,which can achieve the purpose of cultural relics protection.