China News Network Dalian, April 4 (Reporter Yang Yi) The reporter learned from Dalian Bay Submarine Tunnel Co., Ltd. on the 20th that the lighting system of the Dalian Bay Submarine Tunnel, the first cross-sea immersed tunnel in China's high-latitude cold area, has recently been installed and debugged, and the interior of this submarine "dragon" has been lit up all over the line.
Dalian Bay Undersea Tunnel is another cross-sea traffic cluster project with complex technical conditions and high environmental protection requirements after the Hong Kong-Zhuhai-Macao Bridge, the total length of the tunnel is 5.1 kilometers, and the immersed section of the sea consists of a total of 18 immersed tubes. After the completion of the Dalian Bay Undersea Tunnel, it will add a new north-south fast passage for Dalian, which is of great significance for alleviating traffic pressure, optimizing urban functions, and promoting the integration of the two sides of Dalian Bay.
Pan Liwen, chief engineer of Dalian Bay Undersea Tunnel Co., Ltd., introduced that as a high-tech submarine lighting system, Dalian Bay Undersea Tunnel artificial intelligence lighting can achieve harmony and unity with natural light, and can "feel" the cloudy and cold, dark and daylight - not only can adapt to the change of light perception throughout the year, timely adjust the color temperature and color difference between the seabed and the land, but also adjust the brightness of the seabed light in time according to different weather such as sunny days, cloudy days, rain and snow, foggy days, and different light intensities such as early morning, evening, day, and night.
Pan Liwen said that to light up such a giant "dragon", there are many types of lighting that need to be set up - basic lighting in the middle section of the main line / ramp of the tunnel, emergency lighting, reinforced lighting at the entrance, shading lighting, passage lighting and lighting in the equipment room, etc., there are more than 1,42 lighting fixtures alone, and the total length of the circuit laid is nearly 18,1 meters, involving nearly <>,<> meters of power pipelines and nearly <>,<> sets of hangers.
At the same time, a strong power supply system is also required - one lighting distribution room and one emergency lighting power supply room are set up in the north bank equipment area of the tunnel, one lighting distribution room and one emergency lighting power supply room in the south bank equipment area (1) of the tunnel, in addition to two lighting equipment platforms in the immersed section of the tunnel. The lighting distribution room is equipped with lighting distribution cabinet, intelligent lighting control cabinet and equipment area lighting distribution box, the emergency lighting power supply room is equipped with centralized emergency power supply device and A-type emergency lighting centralized power supply, and the lighting equipment platform is equipped with 2kV/10.0kV lighting special buried transformer, lighting distribution cabinet, intelligent lighting control cabinet and centralized emergency power supply device and A-type emergency lighting centralized power supply.
Pan Liwen said that the successful lighting of this underwater "dragon" marks another key step towards the goal of opening the Dalian Bay Submarine Tunnel to traffic on time. (End)