China News Service, Wuhan, October 2 (Wang Mengyuan and Zhou Jinfei) The underground space loop project in Wuhan's Wuchang Binjiang Business District has recently been put into trial operation. This project is currently the largest urban underground loop project in Central China.
Wuchang Binjiang Business District is located in the core area of Jiangnan Bank in Wuhan City. It once gathered important "Wu" enterprises such as Wuchang Vehicle Factory and Wuhan Shipyard. In recent years, it has been planned as a new urban window on the right bank of the Yangtze River. The area is not only home to key corporate projects such as the Yangtze River Coast Railway Group Headquarters and Jinjiu Group Wuhan Headquarters, but also large-scale commercial complexes such as Wuchang Vientiane City, Wuhan Binjiang Street, and Wuhan Jingdong MALL have also been settled one after another. 1.57 million square meters of digital intelligence industry space is spread along the river, and more than 1,200 digital economy companies have settled in the area. The flow of people and vehicles in the area is highly concentrated, and traffic pressure continues to rise. The opening of the underground ring road has effectively filled the area's core transportation shortcomings.
The entire underground loop is composed of a 3-kilometer main line and a 3-kilometer ramp. It adopts a counter-clockwise one-way three-lane traffic mode. The entire speed limit is 20 kilometers per hour. Only small passenger cars are allowed to pass. On October 2, I drove into the underground ring road and saw that the road surface of the ring road was smooth and smooth, the traffic signs were clear and standardized, the overall lighting was sufficient, the supporting facilities were complete, and the traffic was safe and orderly.
Xu Qi, section chief of the project department of Wuchang Economic Development Zone (Binjiang Business District Management Committee), said that the project is currently in the early stages of trial operation, with overall smooth operation, good traffic flow, and initial results of ground traffic diversion.
The project is located close to the Yangtze River. The construction conditions are extremely complex and the construction is extremely difficult. The ring road is less than 50 meters away from the Yangtze River embankment line, and the maximum excavation depth of the foundation pit reaches 18.9 meters. The construction area faces adverse geological conditions of high pressure and strong penetration. At the same time, the project spans Wuhan Metro Line 7 and Line 8, which are already in operation. The clearance of the air duct layer above the ring road is less than one meter. The narrow working space brings great challenges to construction safety and progress control.
In view of the harsh construction environment along the river, the project relied on technological innovation to solve many construction problems. Du Xukang, manager of the Wuchang Binjiang Underground Space Loop Project of China Construction Third Engineering Bureau, introduced that the project adopts the structural self-waterproofing and open-cut method for construction, and uses the three processes of hanging curtains, five-sided enclosures, and bottom water isolation to build a closed foundation pit waterproofing system to prevent groundwater leakage from the source. In order to solve the problems of low construction efficiency and high safety hazards in the small space of the air duct layer, the project independently developed a movable steel formwork trolley, which improved the construction efficiency by about 30% compared with the traditional formwork system.
Smart digital operation and maintenance is the core highlight of this underground loop. The project relies on BIM+GIS technology to build a full-cycle intelligent management platform to achieve visual collaborative management and control of the entire process of project construction and daily operation and maintenance. The ring road is equipped with 24-hour thermal monitoring of traffic flow, intelligent congestion warning and automatic guidance system, which can determine the traffic status in real time and dynamically divert traffic flow. Data shows that the smart operation and maintenance model can reduce operation and maintenance costs by more than 10% and improve operation and maintenance efficiency by more than 20%.
"The operation and maintenance dispatch center is the intelligent center of the entire underground loop." Zhang Xiaopeng, an operation and maintenance staff member of the Wuchang Binjiang underground loop, said that the dispatch center is equipped with an AI intelligent analysis model, which can collect various data such as traffic flow, equipment operation, and on-site dangers in real time. Through continuous iterative optimization algorithms, the system can realize autonomous learning and dynamic upgrades.
The project has significant advantages in convenient services. It has 19 garage connection interfaces across the entire line, connecting more than ten commercial, residential and business complexes in the Binjiang area, and integrating 23,000 regional parking spaces. At present, the ring road has been connected to the mainstream navigation system. Drivers can directly follow the navigation guidance to enter the corresponding ramp, which makes the traffic more convenient. It effectively activates the area's parking resources, opens up commuting and parking congestion points in the core area, and greatly improves the area's travel efficiency.
Liu Ling, a citizen who lives in Binjiang District, Wuchang, said that before the ring road was opened to traffic, the area's surface roads had dense traffic lights, frequent congestion during peak periods, and long waiting times, making daily commuting very inconvenient. After the underground ring road diverts a large amount of ground traffic, the road traffic efficiency is significantly improved, the road surface is clean and smooth, and the residents' travel experience is greatly optimized.
Xu Qi said that the underground ring road can handle 40% of the ground traffic flow in Wuchang Binjiang Business District, reduce the traffic saturation of the core road section by 30% to 40%, and effectively relieve the traffic pressure in the area.
"The underground space is 'woven', and the above-ground space is reserved for life." The relevant person in charge of Wuchang District said that after the ground motor vehicle flow is transferred underground, it will effectively release the riverside slow-moving channel and ecological green space, create a more comfortable traffic environment for pedestrians and non-motor vehicles, and continue to improve the livable quality and business environment of the area.
