为了避免常规工法在长距离联络通道建造过程中存在风险大、工期长等诸多负面问题,拟在华南复合地层首次采用机械法联络通道建造方案,为此从整体方案、工法选择、设备选型及管片设计等方面进行研究,并在研究成果的指导下成功的实施了该项目。并得出如下结论：机械法联络通道工法在复合地层具有适用性,可解决长距离、大夹角、大倾角的工程难题；通过修改管片设计方案,将机械法联络通道中管片拼装方式由径向插入修改为先纵向插入后径向插入是可行的。

In order to avoid the problems of high risk and long construction period in the construction process of long-distance connection channels using conventional construction methods, it is planned to use the mechanical method for the first time in the composite formation of South China.Therefore, research was conducted on the overall plan, construction method selection, equipment selection, and segment structure design, and the project was successfully implemented under the guidance of the research results. And the following conclusion is drawn: the mechanical method of connecting channels can solve engineering problems with long distances, large angles, and large inclinations, and has applicability in composite formations in South China; It is feasible to change the assembly method of pipe segments from radial insertion to longitudinal insertion followed by radial insertion by modifying the pipe segment design scheme.

U 45

中国中铁股份有限公司科技研究开发计划课题(2020-重大-10)