On October 29, the "Tiantuan" of the "Spirit of the Times Yao Xiangjiang" of the great power construction continued to visit major people's livelihood projects in Hong Kong. From this station, come to the Wan Chai Detour in Central, Hong Kong.
This is the second traffic tunnel to and from the hong kong island area. After opening to traffic, the time from Central to North Point East Corridor was shortened from 30 minutes to 5 minutes. It is expected to save about 40 million driving hours per year, equivalent to about HK$3 billion in economic benefits. In addition to economic benefits, what cannot be ignored is the green concept and scientific and technological background of this lane.
Wan Chai Bypass Series Project in Central.
How can lanes improve water quality?
Can building a lane of traffic improve the air and improve water quality?
According to Li Jiyu, the project leader of the Wan Chai Bypass No. 8 Connecting Section Tunnel project in Central, the Wan Chai Bypass in Central is an underground series of the core business district of Hong Kong Island, diverting road traffic to the underground, helping to improve the air quality in the surrounding areas. The reduction in driving time will help reduce CO2 emissions by about 11,000 tons.
The improvement of water quality is because the construction of the detour requires the removal of silt in the water. Li Jiyu said that due to the long history of the typhoon shelter, there is a lot of silt. The silt includes some toxic substances or garbage. After dredging, normal soil is backfilled to improve seawater quality.
According to Zhang Zizhong, project manager of the Typhoon Shelter Tunnel in Causeway Bay, Wan Chai, Central, in the typhoon shelter area, there are not only more than 130 yachts and sailing boats from the Hong Kong Yacht Club, but also more than 300 fishing boats, and fishermen live on board. After the restoration of the seabed, the living environment can be improved.
The scientific and technological background of "crossing the building and crossing the sea"
The Wan Chai Bypass in Central adopts 9 major items and 19 small items in the "10 New Technologies in the Construction Industry", with a benefit of 97 million Hong Kong dollars for scientific and technological progress. The detour has won more than 40 domestic and foreign awards, including the 2016 Institution of Civil Engineers NCE World Tunnel Award.
According to Mr. Hu Guangbo, Chief Engineer of the Principal Works Division of the Highways Department of the Government of the Hong Kong Special Administrative Region, the air purification system used in the Wan Chai Bypass in Central is the largest air purification system in the world's tunnels, and Hong Kong has introduced this technology to traffic tunnels for the first time.
According to statistics, after the introduction of air purification systems, the suspended particles and nitrogen dioxide in the air can be reduced by at least 80%.
Written/Photographed by Nandu Special Correspondent Wang Shiqi Chen Canrong