Recently, the construction of FSDI Chinese Railway Survey and design, China Railway fourteen Bureau of domestic the largest diameter of single hole double shield tunnel of Wuhan Metro Line 8 tunnel smoothly across the Yangtze River, so far, driving a total of 383 days, more than 1000 to replace the tool, the diameter of 12.1 meters (equivalent to four storeys) of the metropolis No. the shield machine smoothly through the rubber conglomerate and clay composite formation the most complex, arrived in Hankou, is marching to the Hankou Huangpu road station.

By the construction of fourteen Railway Construction Bureau China large shield company of Wuhan Metro Line 8 two projects since June 9th last year since the succession through the 750m origin, long distance and high intensive shanty towns, nine Wuhan railway, Yangtze River levee, the river channel section of heavy and difficult construction area, overcome the construction risk, high technical difficulty, non-uniform geological and the process is extremely complex, civilized construction standards and high technology, tight schedule requirements, talent shortage and other difficulties, through the depth of 58m of Yangtze River terraces at the bottom. For a long time without leakage under high water pressure, using prefabricated segment, strictly control the segment error was within 0.5mm, and is provided with a plurality of waterproof measures, increase the inner lining structure, strengthen the safety reserve, opened a new chapter in the domestic metro shield tunnel is provided with a double-layer lining.

Wuhan Yangtze River tunnel through the Yangtze River, is the Wuhan rail transit network planning "a ring ten shot, an important backbone line three fast through the city", is an important channel of the city center across the Yangtze River passenger traffic is expected by the end of August, arrived at the north shore of Huangpu receiving position and achieved through, after the completion of the project can accommodate from two subway rail traffic, subway ride across the river from Huangpu road to Alex shed station time will be reduced from 12 minutes to 4 minutes, the design of single hole double, not only greatly reduce the construction risk, also provides great convenience for people to travel.

Article source: China Railway Construction Corporation