Recently, the official micro-blog of Science and Technology Daily released the latest news of the "Super Sea-Crossing Project" Yongzhou Railway: July 30, which lasted more than 2 years, was surveyed and designed by the Fourth Railway Institute of the "Tunnel Risk Assessment and Jintang Subsea Tunnel Key Technical Plan "It passed the review of an expert group led by Qian Qihu, an academician of the Chinese Academy of Engineering, marking that the technical plan for the world's longest submarine high-speed rail tunnel is ready and one step closer to the goal of formal construction at the end of the year.
It is reported that the 16.2 km Jintang Submarine Tunnel is a full-line control project of the entire Yongzhou Railway Project, starting from the west of Qingzhi Chemical Wharf in Beilun, Ningbo in the west, to Zhoushan Jintang Island in the east, and the middle part of the sea is 8.3 thousand. Meters, the maximum buried depth is 78 meters, and the diameter is 14 meters.
In early March of this year, the feasibility study report of the Yongzhou Railway was formally approved by the Provincial Development and Reform Commission. On May 23, as the six supplementary exploration vacancies of the Jintang Subsea Tunnel on the Yongzhou Railway were all completed, the project’s basic geological data was collected. All completed, a total of 218 holes. After completion, the Jintang Subsea Tunnel is not only my country's first subsea high-speed rail tunnel, but also the longest tunnel in the world with the highest water pressure. This also means that the project is accompanied by multiple world-class technical difficulties.
According to the plan, the Yongzhou Railway has a total length of 77 kilometers and a design speed of 250 kilometers per hour. The main body adopts a combination of "bridge + tunnel". There are 33 newly built bridges with a total length of 27.764 kilometers and 17 tunnels with a total length of 35.246 kilometers. Along the line, there are 5 stations in Qiuai (connecting station), Beilun West, Jintang, Ma'ao, and Zhoushan, of which 4 are newly built, Ningbo East and Yunlong Stations are renovated, and Zhoushan Station is set up with a motor car storage yard. Among them, Ningbo Beilun to Jintang Island is designed as a submarine tunnel; Jintang Island to Zhoushan Island is designed as the Xihoumen Bridge with a main span of 1488 meters. The main pier has a water depth of 60 meters. After completion, it will be the world’s largest bridge of its kind. Railway combined to build a bridge.
According to relevant departments, the Yongzhou Railway is expected to officially begin construction at the end of the year and is expected to be completed and opened to traffic in 2025. After completion, it will not only end the history of Zhoushan’s unreachable railway, but will also directly shorten the time distance between Ningbo and Zhoushan to 30 minutes. It is a landmark project of "Yongzhou Integration" and the opening of large passages for "Yiyongzhou" An important part of. This super project will also directly promote the integration of Ningbo and Zhoushan into the Yangtze River Delta.
