武汉软土地区地铁隧道长期沉降规律及原因分析  

Long-term Settlement and Research Analysis of Subway Tunnels in Wuhan Soft Soil Areas

作　　者：柯洋 代帅 李谋思 KE Yang;DAI Shuai;LI Mousi(Wuhan Geotechnical Engineering and Surveying Co.,Ltd.,Wuhan 430000,China;Wuhan Urban Construction Group Construction Management Co.,Ltd.,Wuhan 430000,China)

机构地区：[1]武汉市勘察设计有限公司,湖北武汉430000 [2]武汉城建集团建设管理有限公司,湖北武汉430000

出　　处：《城市勘测》2024年第3期204-208,共5页Urban Geotechnical Investigation & Surveying

摘　　要：以武汉地铁8号线出入段线矩形隧道为分析对象,将近5年的地铁运营监测沉降数据与隧道沿线工程地质条件、地下水及周边施工进行对比分析,系统研究地铁隧道长期沉降规律。结果表明,出入段线隧道最大累计沉降106.1 mm,且沿线形成了三个大的沉降槽。隧道结构下卧软弱土层较厚且分布不均、地下水位及上盖物业开发是导致出入段线长期沉降的主要原因。轨道交通结构的长期沉降问题,需要结合“设计—施工—运营”统筹考虑。Taking the rectangular tunnel of Wuhan Metro Line 8 access section line as the object of analysis,nearly five years of metro operation monitoring settlement data and engineering geological conditions along the tunnel,groundwater and surrounding construction are compared and analyzed to systematically study the long-term settlement pattern of metro tunnels.The results indicate that the maximum cumulative settlement of the entrance and exit section tunnel is 106.1mm,and three large settlement grooves have been formed along the line.The thick and unevenly distributed soft soil layer beneath the tunnel structure,the groundwater level,and the development of the overlying property are the main reasons for the long-term settlement of the entrance and exit sections.The long-term settlement problem of rail transit structures needs to be comprehensively considered in conjunction with“design construction operation”.

关 键 词：地铁隧道 软土地区 长期沉降 地下水位 上盖物业 

分 类 号：P642[天文地球—工程地质学]