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正在建设中的福建厦门电网进入厦门岛第4个跨海输电通道的海域段电缆将沿着已经建成通车的厦门翔安海底隧道过海,为厦门岛供电,这将成为中国大陆第一个借助海底隧道敷设电缆的工程。厦门岛四周环海,是厦门市的经济、政治、文化中心,目前厦门电网共有3个220 kV输电通道向厦门岛供电,每个通道均为双回路。其中,第一个通道采用海底电缆的供电方式,第二个和第三个通道采用的是跨海架空线路,此次新建的第四个通道将沿着厦门翔安海底隧道的服务隧道敷设电缆,实现跨海送电。海底隧道采用三孔形式,两侧为行车主洞,中间设置一孔服务隧道,服务隧道宽3 m,高2.5 m,作为电缆等市政设施以及紧急避难、日常维护检查等通道。据介绍,
Under construction Xiamen Power Grid Xiamen Island into the fourth cross-sea transmission channel of the sea section of the cable along the already opened to traffic Xiamen Xiang An undersea tunnel across the sea for the Xiamen Island power supply, which will become China’s first with the help of Subsea tunnel laying cable project. Xiamen Island, surrounded by the sea, is the economic, political and cultural center of Xiamen City. At present, Xiamen Power Grid has a total of three 220 kV transmission channels for power supply to Xiamen Island, each of which is a dual circuit. Among them, the first channel using submarine cable power supply, the second and third channel is used across the sea overhead lines, the new fourth channel will be along the Xiamen Xiang An Subsea Tunnel service tunnel laying cables , To achieve cross-sea transmission. Subsea tunnel with three holes form, on both sides of the driving main hole, the middle hole service tunnel set up, the service tunnel width of 3 m, 2.5 m high, as cable and other municipal facilities and emergency shelter, routine maintenance and inspection channels. According to reports,