This paper aimed at the problem of Line 4 of Xi'an Metro relates to the protection of cultural relics,proposed heritage preservation targeted principles.Utilization of surface subsidence model to predict the subway tunnel surface subsidence,to assess the impact of Ming City Wall relates to Line 4 of Xi'an Metro,and to propose the principle of the protection of culture relics of the tunnel section beneath the Ming City Wall in the subway construction process.Evaluate the impact on the city walls during subway operation and propose protective measures to minimize the impact of the subway construction,to achieve the transportation and the environment friendly development.%以西安市地铁四号线为研究对象,根据西安地铁建设过程涉及到的文物保护问题,提出具有针对性的文物保护原则,利用地表沉降模型预测了地铁隧道施工产生的地表沉降情况,评估西安地铁四号线施工对明城墙造成的影响,提出了隧道区间经过明城墙时的保护方案,并提出防护措施,最大限度地减少地铁建设及运营对文物古迹的影响,实现轨道交通与环境的友好发展.
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