Fushe tunnel of Xiamen section of Fuzhou Xiamen high speed railway has entered the critical construction stage, and now it has completed more than 30%

According to Xiamen Daily, the construction of Fuzhou Xiamen high speed railway, one of the key projects of the national "belt and road" construction and provincial and municipal key projects, is speeding up, among which the fushe tunnel, one of the main projects of Xiamen section, has entered the critical construction stage. The reporter learned that the project has been completed by more than 30%, and the whole tunnel is expected to be completed in June next year, providing preconditions for the opening of Fuzhou Xiamen high speed railway in 2022. The

fushe tunnel is a key control project in Section 8 of Fuzhou Xiamen high speed railway, which is constructed by China Railway No.4 Engineering Group Co., Ltd. and has completed 146 meters of underground tunnel excavation and 135 meters of open tunnel construction. It is reported that after the completion and opening of Fuzhou Xiamen high speed railway, fushe tunnel will become the only way for trains to enter and leave Xiamen high speed railway station, which can be described as an important joint point. Fushe tunnel passes through the core area near Xiamen north station. On this basis, the excavation of the tunnel is equivalent to a "operation" of no small difficulty. Therefore, the whole construction process must ensure the fine operation.

at the open tunnel construction site of fushe tunnel, the reporter saw that the substructures such as pile foundation, plate beam, inverted arch and filling have been basically completed, and several workers are assembling and welding the steel formwork of the tunnel secondary lining trolley, preparing for the superstructure construction. "These templates are equivalent to the 'skeleton' of the tunnel, whose shape, structure and precision directly affect the forming quality of the tunnel." Chen Xing, a site construction technician, told reporters that the formwork construction of the second lining trolley is a difficult part of the project, so it is necessary to have a reasonable design and accurate technology to ensure the accuracy of the tunnel structure. "After the formwork is installed, concrete pouring shall be carried out in the" skeleton "to make the shape of the tunnel." Chen said. A 6031 a 6031 entered the depth of the excavation of the hidden hole. The workers are operating the mechanical arm to carry out the concrete shotcreting operation. Chen Xing introduced that this is the middle step of the excavation of the hidden hole. After shotcreting, the general outline of the tunnel appears. At this time, the secondary lining trolley "comes out", assembles steel formwork, pours secondary lining concrete, carries out surface "packaging" for the tunnel, and then distributes water, electricity, signal and other basic equipment. It is reported that at present, the construction period is tight and the task is heavy. Several key control projects are strengthened at the same time, and all supporting projects are promoted simultaneously, so as to help Xiamen integrate into a more efficient and efficient national rapid railway network as soon as possible. (reporter: Tang Haibo, correspondent: Chen Zhi)