武汉地铁保护区安全监控技术研究及应用

随着我国对城市地下空间开发的投资增加，近年来，武汉轨道交通建设也飞速发展，城区轨道交通网络逐步形成，地铁保护区也越来越多，这些区域内多存在在建或规划的大型建设项目，其建设过程可能造成地铁结构变形，增加地铁运营的风险，因此，对地铁保护区内结构进行安全监测受到管理部门和施工部门的重视。依托武汉市长江多级阶地典型的地铁保护区隧道结构变形安全监测项目，详细论述地铁保护区变形安全监测的方案设计、实施及控制指标等因素，并通过对比现场监测和计算机模拟结果，研究各因素在不同地质条件下的影响程度和范围。针对武汉地区的地质特征提出地铁保护区应考虑的主要安全风险因素，为降低武汉地区地铁保护区内的工程风险，保障工程安全建设提供案例参考。

Research Application and of Safety Monitoring Technology in Subway Protection Zone in Wuhan

China has increased investment in urban underground construction in the last decade. In particular, Wuhan, as the largest city in central China, has also witnessed rapid development of its subway system, and a subway network has gradually formed. The subway protection zone has been implemented to achieve subway operation safety, and this region has increased with the subway network. Large-scale infrastructure projects in the subway protected zone may negatively impact subway tunneling and increase the risks associated with subway operations. Therefore, the safety monitoring of tunneling in a subway is emphasized by management and construction departments. This study discusses the safety monitoring project of a subway tunnel in a typical subway protection zone in the Yangtze River terraces in Wuhan by analyzing the design, implementation and control indexes in detail. In addition, the influence of each factor under different geological conditions is studied by comparing monitoring results and computer simulations. Our study identifies a list of risk factors that should be considered in the subway protection area based on the geological characteristics in Wuhan and provides a case study for reducing the construction risk in the subway protection zone.