Smoothly offline! The latest progress in the reconstruction of the Ningwu Railway

According to China Railway Shanghai Bureau Group Co., Ltd., on May 13, the "Ningwu" shield machine with an excavation diameter of 9.33 meters was successfully rolled off the assembly line in Changsha City, Hunan Province, and will be transported to Nanjing in the near future to be used in the shield section of the Nanjing South Tunnel of the Ningwu Railway Expansion and Transformation Project, marking the important progress of the construction of the Ningwu Railway Expansion and Transformation Project.

"Ningwu" shield machine

It is 132 meters long and weighs about 1,375 tons

Nanjing South Tunnel is a full-line control project of Ningwu Railway Expansion and Reconstruction Project, spanning Qinhuai District, Yuhuatai District and Jiangning District of Nanjing, passing through Ning'an High-speed Railway, Beijing-Shanghai High-speed Railway, Shanghai-Rong Railway and other trunk railways and Ningdan Highway, Niushou Avenue and other traffic arteries, with a total length of 14.442 kilometers, a single-hole single-track tunnel with a design speed of 120 kilometers per hour.

Among them, the shield section of the tunnel is about 2.4 kilometers long, and the shield machine starts from the working shaft of Meixiang Road in Yuhuatai District and ends at the existing tunnel in Hanfu Mountain, Jiangning District, passing through argillaceous sandstone, silty sandstone and other strata, with the characteristics of many waters, complex surface and underground environment. In particular, the shield machine passes under the Qinhuai New River section, and the shallowest overburden is only 2.6 meters, which is the shallowest overburden encountered in the domestic shield project.

In view of the characteristics of many construction difficulties, high safety risks and complex technical conditions in the shield section of Nanjing South Tunnel, the construction management unit of the project, Hefei Railway Hub Project Construction Headquarters, together with China Railway 14th Bureau and other participating units, jointly developed and manufactured the "Ningwu" shield machine in Changsha Shield Industrial Base with China Railway Construction Heavy Industry Group. The excavation diameter of the shield machine is 9.33 meters, the total length of the whole machine is 132 meters, the weight is about 1,375 tons, and the total installed power is 4,305 kilowatts.

After the reconstruction of the Ningwu Railway Expansion and Reconstruction Project

The total length of the line is 102.2 km

In order to highlight the characteristics of the railway, the cutterhead of the "Ningwu" shield machine is designed and painted with a locomotive pattern, with red and yellow colors as the keynote, implying that this old railway, which has witnessed the rejuvenation of the nation for nearly 100 years, will achieve a "new look" through new technologies such as shield construction.

It is reported that the Ningwu Railway is mainly freight, taking into account a small amount of passenger transport, and is an important infrastructure to enhance the freight capacity of the eastern section of the Yangtze River Economic Belt and an important part of the railway corridor along the Yangtze River.

The Ningwu Railway Expansion and Reconstruction Project starts from Nanjing East Marshalling Station (not included) in the north, enters Ma'anshan City of Anhui Province through Qixia District, Qinhuai District, Yuhuatai District and Jiangning District of Nanjing City, passes through Dangtu County into Wuhu City, and ends at Wuhu East Station (not included).

After the reconstruction, the total length of the line is 102.2 kilometers, of which the new outer winding and realignment project from Cangbomen Station to Guxiong Station in Nanjing City is a new outer bypass realignment project, with a length of 29.7 kilometers, and the remaining sections are electrified and expanded, with a main line length of 72.48 kilometers.

After the project is completed and put into operation, it will further optimize the layout of the regional railway network, which is of great significance for implementing the concept of "ecological priority and green development", accelerating the upgrading and adjustment of the industrial structure of the regions along the line, optimizing the spatial layout of urbanization, and enhancing the flexibility of the road network.

Source | Dajiang Information

Editor-in-charge | Yuan Dandan Editor| Gu Pan

Organizer | Anhui Provincial Cyberspace Administration and Provincial Government Information Office

Platform construction and technical support | Anhui New Media Group