长距离、大直径顶管在输水管线中的施工技术研究  

Research on construction technology of long distance and large diameter jacking pipes in water supply pipelines

作　　者：邹德征 ZOU De-zheng

机构地区：[1]中铁十九局集团有限公司,北京100176

出　　处：《建筑机械》2024年第12期149-154,共6页Construction Machinery

摘　　要：在实施工程项目时,必须特别关注工程成本和环境保护2大课题。例如在输水项目中取水泵房、排水井和取排水管道的建设主要依赖于传统的大开挖+现浇施工技术,以及水下施工的大开挖+沉管方法。然而与这些传统方法相比,采用沉井+暗挖顶管的新工艺在应用现状、关键点和挑战方面表现出其独特性。文章以郑州东部原水干管工程(1期)项目南三环至陇海铁路北输水管线工程的顶管施工为例,对于长距离、大直径的输水管线,传统的开挖施工方法已不再适用。顶管施工技术作为1种非开挖技术,能够有效地解决这一问题。文章通过三维实体建模,构建了管道顶进过程中的力平衡模型,并重点讨论了大直径顶管在长距离顶进过程中的施工工艺、参数选择、后背结构抗力和管道顶力计算、顶进注浆等关键技术难点及其控制措施,为类似顶管施工项目提供有价值的参考和借鉴。Taking the pipe jacking construction of the south third ring to the north railway line of the Zhengzhou east raw water main project(phase I)as an example,for long-distance,large-diameter water supply pipelines,traditional open-cut construction methods are no longer applicable.Pipe jacking technology as a form of trenchless technology,can eff ectively solve this problem.This article constructs a force balance model during the pipe jacking process through threedimensional solid modeling and focuses on key technical diffi culties and control measures such as construction techniques,parameter selection,resistance of the back structure,and calculation of jacking force during long-distance jacking of large-diameter pipes,as well as grouting during jacking.The purpose is to provide valuable reference and learning for similar pipe jacking construction projects.

关 键 词：长距离 大直径 顶管 三维实体建模 力平衡模型 输水管线 

分 类 号：U455.81[建筑科学—桥梁与隧道工程]