为解决大断面、多舱室综合管廊节段在长线法匹配预制以及拼装过程中的关键技术难题(如端部节段的预制工艺、大断面多舱室管廊节段内模设计及分离技术、管廊预留孔及预埋件的定位精度控制以及在纵向较大安装坡度工况下节段的线形控制和纠偏技术调整等),以厦门环东海域美山路地下综合管廊工程为背景，对该工艺的特点及难点进行深入分析和研究。通过现场应用试验及工程实践总结，提出相应的技术方案： 1）端部节段采用带模绑扎及整体吊装工艺，并开发中空橡胶塞及橡胶条用于外露筋和止水钢板的定位。 2）采用液压顶推工艺完成相邻管廊节段的分离。为减少液压顶推的摩阻力，在管廊节段与混凝土胎膜间采用马粪纸或薄纤维板进行隔离。 3）优化模板拼缝结构为垂直面，并采用液压传动系统控制整个内模自动行走以及内模侧板的开合。 4)在模板相应位置处开设定位孔，并研发制作硅胶棒及橡胶配件等提高预埋工艺的质量。 5）通过监测管廊节段预先标记的中轴线和水平线实现对管廊线形的控制。若出现超差，则采用环氧树脂垫片单边支垫的方式进行线形调整。对安装纵向坡度较大的工况，采用定制的具有三向微调的变频门机进行节段拼装。研究结果表明，该技术方案在实际应用中取得了良好的成效和经济效益，并在厦门翔安东路综合管廊工程中成功应用。

There are several challenges in the longline matching prefabrication and assembly process of multicabin utility tunnel segments with large crosssections. These challenges include the prefabrication of end segments, internal mold design and separation technology of the large crosssection multicabin utility tunnel segments, positioning accuracy control of the reserved holes and embedded parts in the tunnels, and alignment control and rectifying technology of the segment under the condition of a large longitudinal installation slope. To address these issues, the characteristics and key points of this technology are analyzed and studied in detail based on a utility tunnel project of Meishan Road, Ring East Sea area, Xiamen. Through a field application test and engineering practice, the following corresponding technical schemes are proposed. (1) The technology of binding and integral hoisting is used in the end segment, and a hollow rubber plug and rubber strip are developed for positioning the exposed reinforcement and steelplate waterstop. (2) The adjacent tunnel segments are separated using hydraulic push technology. Moreover, to reduce the friction resistance of hydraulic jacking, a straw or thin fiber board is used to separate the tunnel segments from the concrete mould. (3) The split joint structure of the formwork is vertical, and a hydraulic drive system is used to control the automatic movement and the opening and closing of the side panel of the internal mold. (4) The positioning hole is established in the corresponding position of the formwork, and the quality of the embedded technology is improved by studying and fabricating the silica gel rod and rubber parts. (5) By measuring the central axis and horizontal line marked in the tunnel segment, the control of the tunnel segment alignment is realized; in outoftolerance cases, a singleside support pad of epoxy resin is used for alignment adjustment. Under the working condition of a large longitudinal slope, a custommade variablefrequency door machine with threedirectional fine tuning is used to assemble the segment. Results indicate that the technical scheme yields good results and economic benefits in practical applications. Moreover, the proposed scheme is successfully applied to a utility tunnel project of Xiang′an East Road in Xiamen.