干性粉砂地层条件下三联拱暗挖管廊穿越风险源关键技术研究

Research on Key Technology of Tunnel Crossing Risk Source of Three-connected-arch Under Dry Silty Stratum

文中以干性粉砂地层条件下浅埋暗挖三联拱非对称管廊下穿既有管线为研究对象,分析在特殊地层、非常规断面结构的条件下地层变形沉降规律,针对不同类别的风险源,总结并验证了穿越管线、河道、构筑物、道路等土体沉降控制措施。

This paper takes the shallow buried and concealed excavation triple arch asymmetric pipe gallery crossing the existing pipeline under the condition of dry silt stratum as the research object,studies the law of stratum deformation and settlement under the condition of special stratum and unconventional section structure,and summarizes and verifies the soil settlement control measures of existing facilities such as crossing pipelines,rivers,structures,roads,etc.according to different types of risk sources.