穿越南水北调干渠热力隧道设计研究

随着城市和工程建设的迅速发展，新建隧道下穿既有建筑或构筑物也大量出现。浅埋、松散砂土地层隧道施工中，随着地层应力状态的改变和调整，引起地层和地表在一定范围内的不均匀沉降变形，它对既有建筑物或构筑物的功能及安全使用则可能产生较大影响。介绍石家庄市热力隧道下穿南水北调中线干渠建设中的主要相互影响因素、设计中重点研究的问题，分析了位置关系、隧道施工变形、隧道防洪与防渗等设计处理措施，供类似工程应用参考。

Design of Heating Power Tunnel Undercrossing Main Channel of South-to-North Water Transfer Project

With beneath the existing tum tunnel, uneven the rapid development of cities and engineering construction, large numbers of new tunnels buildings or structures have appeared. During the construction of shallow, loose sand strasurface settlement appears as the formation stress state changes and adjustments, which may have great influence on the existing buildings or structures. In this paper, the interaction factors and the design problems are introduced and position relationship, construction deformation, treatment measures of flood prevention and seepage are analyzed in the construction of Shijiazhuang heating power tunnel under-crossing the main channel of the mid-route of South-to-North Water Transfer Project, which can be used as reference for similar projects.