复杂环境下地铁纪念堂站暗挖施工风险控制技术——以广州地铁十三号线二期工程纪念堂站为例

广州地铁工程拱盖法暗挖车站较多，由于暗挖车站顶部存在砂层、淤泥质黏土、粉质黏土等软弱地层，其普遍具有高含水量性、高压缩性、低透水性和低强度等特点，施工阶段易造成较大变形，将会引起隧道坍塌和周边建构筑物设施破坏，造成严重的生命与财产损失，继而造成重大的社会影响。以复杂环境下的纪念堂站为施工风险论述对象，采用合理设计、施工方案，降低施工风险，同时增加地质补勘、深层注浆以及施工监测等方法取得很好效果。对软弱地层暗挖车站进行分析和总结，为暗挖车站施工安全提供依据。

Risk Control Technology for Underground Excavation Construction of Subway Memorial Hall Stations in Complex Environments：Taking the Memorial Hall Station of Guangzhou Metro Line 13 Phase II Project as an Example

There are many underground excavation stations using the arch cover method in Guangzhou Metro engineering. Due to the presence of weak strata such as sand layer, muddy clay and silty clay at the top of the underground excavation stations, they generally have characteristics such as high water content, high compressibility, low permeability, and low strength. During the construction phase, they are prone to significant deformation, which will cause tunnel collapse and damage to surrounding buildings and facilities, resulting in serious loss of life and property, and subsequently causing significant social impact. Taking the Memorial Hall Station in a complex environment as the object of construction risk discussion, a reasonable design and construction plan was adopted to reduce construction risks, while increasing geological exploration, deep grouting, and construction monitoring methods to achieve good results. The hidden excavation station in weak strata was analyzed and summarized, providing a basis for the construction safety of the hidden excavation station.