Management and Maintenance of Wuhan Yangtze River Tunnel

The traffic control department predicts the traffic flow around the entrance and exit after the tunnel is opened to traffic. The results show that the traffic at Dazhi intersection of Jinghan Avenue, Nanjing intersection of Shengli Street and Tianjin intersection of Jiang Yan Road in Jiangbei (Hankou) is the busiest. The traffic volume of Friendship Avenue (Zhongshan Road-Xudong Street), Xinhe Street and Qinyuan Road in Jiangnan (Wuchang Film) increased significantly. The roads in the old city of Wuhan are narrow and the two-way traffic efficiency is low. Changing to one-way traffic can alleviate tunnel traffic faster.

The traffic diversion scheme of the Yangtze River Tunnel issued by the traffic control department is "three limits" (time limit, speed limit and vehicle type limit), and the single and double number traffic is implemented during the passable period, mainly according to the overall idea of traffic management of the Yangtze River Tunnel and surrounding areas, to control the tunnel traffic flow within a certain range to ensure safety and smoothness. The tunnel mainly solves the cross-river passenger traffic between Wuchang and Hankou Central City, and balances the traffic flow of the Yangtze River Bridge, the Second Bridge and the Third Bridge. From the safety point of view, the vehicles passing through the tunnel are only small passenger cars with 9 seats or less. The total length of the Yangtze River Tunnel is 3.7 kilometers, and the completed tunnel pavement is "wave S-shaped". Trucks, large and medium-sized buses (including buses) are prone to * * * vibration due to their heavy loads, which is a test of tunnel pavement pressure. Once an accident happens, it is difficult to rescue and eliminate traffic jams due to the geographical limitation of the tunnel. Therefore, during the trial operation, vehicles that can pass through the Yangtze River Tunnel are restricted with a speed limit of 60 km/h.. All vehicles entering and leaving the tunnel must pass in strict accordance with the guiding markings and signs in the tunnel, keep the speed and distance, and prohibit changing lanes at will and parking in the tunnel.

Therefore, the traffic control department changed Nanjing Road, Shangmao Street, Jianghan Second Road, Youyi Street and Han Jing Street into one-way streets. In addition, adjust the one-way traffic direction of Tianjin Road, Hezuo Road, Lanling Road and Beijing Road to keep consistent with the direction of the tunnel ramp entrance and exit, forming a small regional traffic cycle. At the same time, Friendship Avenue (Zhongshan Road-Xudong Street) prohibits medium-sized (inclusive) and above trucks from passing from 7: 00 to 20: 00 every day to ensure safety and smoothness.

2012165438+122 October, the traffic control department issued the trial measures to adjust the traffic management of Wuhan Yangtze River Tunnel, in order to alleviate the traffic congestion during peak hours, give full play to the traffic function of Wuhan Yangtze River Tunnel and ensure the safe and smooth traffic of the tunnel and its surrounding roads.

The specific adjustment measures are as follows: starting from 2012165438+129, from 7: 20 to 8: 20 every trial working day, motor vehicles are prohibited from entering the tunnel from west to north (Xinsheng Road to Yangtze River Tunnel) and from east to north (Hubei University to Yangtze River Tunnel).

Other original traffic management measures of the Yangtze River Tunnel remain unchanged.

Vehicles that need to pass through the Yangtze River Tunnel within the time limit can turn around through the Chuhan Road Zhongbei Road Interchange and enter the tunnel, or bypass the Yangtze River Bridge, the Second Yangtze River Bridge and other Yangtze River crossings. Drivers are requested to pay close attention to the "road information" broadcast by the traffic radio station in time, choose a reasonable and smooth route, and obey the traffic signs and the instructions of the traffic police.

Friendship Avenue (Zhongshan Road-Xudong Street) is closed to medium-sized (inclusive) trucks from 7: 00 to 20: 00 every day; With the opening of the Yangtze River Tunnel, traffic control will be implemented on the 10 section near the Yangtze River Tunnel:

Tianjin Road and Lanling Road only allow motor vehicles to travel from Zhongshan Road to Jiang Yan Road;

Hezuo Road only allows motor vehicles to travel from Jiang Yan Road to Zhongshan Road;

Beijing Road only allows motor vehicles to travel from Poyang Street to Zhongshan Avenue;

Nanjing Road (Zhongshan Avenue-Shengli Street) only allows motor vehicles to drive from Zhongshan Avenue to Shengli Street;

Commercial Street only allows motor vehicles to travel from Jinghan Avenue to Jianghan Second Road;

Jianghan Second Road (Shangmao Street-Huangshi Road) only allows motor vehicles to travel from Shangmao Street to Huangshi Road;

Friendship Street (Dadi Road-Huangxing Road) only allows motor vehicles to travel from Dadi Road to Huangxing Road;

Han Jing Street (Big Branch Road-Station Road) only allows motor vehicles to travel from the big branch road to the station road. Fire protection design

In order to ensure fire safety, the design of the Yangtze River Tunnel fully considers the fire demand. The Yangtze River Tunnel adopts reinforced concrete structure, and the interior decoration is mainly cement and fireproof materials. The road asphalt layer in the tunnel is 9 cm thick, and the upper layer is 4 cm with new asphalt, which has the functions of flame retardant, low noise and anti-skid. The flue plate installed in the Yangtze River Tunnel is mainly used to exhaust smoke after fire, and it is discharged through the air shafts at both ends of Wuchang and Hankou. Its scientific and technological content and innovative technology are leading in the country. The flue plate originally designed was erected with steel beam concrete. For safety and portability, it was changed to channel steel hoisting, similar to the "ceiling" in home decoration. The total weight of the flue plate after the reconstruction of the Yangtze River Tunnel is over 1 1,000 tons, and the diameter is 1.38 meters, making it the largest flue plate in China.

The whole tunnel is equipped with 9 1 ventilation and smoke exhaust valves. In addition, because both ends of the tunnel are located in the city center and the municipal pipe network is perfect, the fire water for the tunnel is introduced from Wuchang and Hankou water supply networks and two different water mains respectively. In case of fire, tunnel water is directly taken from municipal pipe network. In the shield section of the Yangtze River Tunnel, there are 1 rain valve groups every 25m, and 1 group has 16 water mist nozzles. There are 4,944 nozzles in the tunnel, which can realize remote start, form a water curtain space in the tunnel and put out the fire in time. In addition, 1 fire hydrant box and water film fire extinguishing system are set every 50 meters, and each box is equipped with 2 fire hydrants, 2 hoses and 2 water guns. On the right side of the driveway, there are 1 escape slides every 80 meters. Once there is a major car accident or fire in the tunnel and people need to evacuate urgently, the cover of the escape slide can be opened. People can enter the escape passage from the bottom of the tunnel along the slide, and the passage can also be used as a passage for firefighters to extinguish fire and attack.

fire drill

At the end of the drill, Chen Jinsong, chief of staff of the Wuhan Fire Brigade, introduced at the drill site, "The difference between fire fighting in the Yangtze River tunnel and ground fire fighting highlights' new, difficult and excellent'." First of all, the subjects are fresh and there is no actual combat experience. Wuhan Yangtze River Tunnel is the "first tunnel of the Yangtze River", which may face many new situations and problems in the future. Secondly, it is more difficult to put out fires on the ground. The tunnel is located at the bottom of the river, and the space is narrow. Once a fire breaks out, the smoke is very heavy and the battle field is not large, which will bring great difficulties to the fire fighting. Third, we need to use advanced and superior equipment. According to the characteristics of tunnel fire, the fire department mobilized the most advanced fire-fighting equipment and equipment at home and abroad, such as mobile large-displacement smoke exhaust vehicles, fire-fighting motorcycles, robots and so on. The most elite fire brigade defends the tunnel. According to Chen Jinsong, chief of staff of Wuhan Fire Bureau, the squadron in the responsibility area of the Jiangnan section of the Yangtze River Tunnel is Jiyuqiao Fire Squadron, which is about 1.5km away from the Jiangnan entrance of the tunnel, and the nearby Wuchang Squadron, Hongshan Squadron and Xu Dong Squadron provide support. The squadron in the responsibility area of Jiangbei District is Jianghan Squadron, which is about 1km away from the Jiangbei entrance of the tunnel. The adjacent fire squadrons are Jiang 'an Squadron and Tianmendun Squadron. "We can also mobilize the officers and men of the Secret Service Brigade to participate in the war at any time. This is the most elite fire brigade in Wuhan and can cope with all kinds of emergencies. " Chen Jinsong said: "At present, there is a comprehensive and scientific fire fighting and disposal scheme in the tunnel. This drill fully tested the scientific nature of the plan. Officers and men have experience in tunnel fire fighting and are confident to deal with various fires. "

Equipment placement

A red fire box is set every 45 meters in the tunnel. There are fire hoses and dry powder extinguishers in the fire box.

Emergency help

In case of emergency, there is a red emergency telephone box every 45 meters next to the fire box. You just need to open the door and press the button on the loudspeaker, and you can directly call the central control room of the tunnel for help.

When large-scale traffic accidents such as collision and rear-end collision occur in the tunnel, vehicles that can start should leave the tunnel as soon as possible and wait for the traffic police at the exit of the tunnel to avoid traffic jams. The vehicles that can't start are waiting for the traction of the tunnel tractor. When there are casualties, the tunnel staff will immediately notify the ambulance personnel and the traffic police on duty. The traffic police will handle it at the tunnel exit.

Evacuation exit

There is an "evacuation exit" every 80 meters in the tunnel, which can directly enter the safe passage under the road through the slide. The "evacuation port" is set on the driver's left hand side and has a black door with two handles. The "evacuation port" is equipped with an electrically controlled automatic cover, which is closed at ordinary times, and there are three control methods in case of disaster. One is remotely controlled by the central control room of the tunnel company and automatically opens; One is that when there is no power failure in the tunnel, it can be controlled by the electric control button (green) next to the "evacuation exit"; Another is that in the case of tunnel power failure, you can lift the handle on the "evacuation exit" by hand.

When there is an emergency in the tunnel, you should quickly open the "evacuation exit" on the left side of the driver at the prompt of the broadcasting system or under the leadership of the staff, and quickly slide down through the escape slide in the evacuation exit to enter the underground safe passage. The underground escape passage has acousto-optic signals to indicate the escape route, which can reach Jiangnan or Jiangbei selectively along the underground safe passage. -1980 After ten years of planning, it took four years and a total investment of more than 2 billion yuan to build the Wuhan Yangtze River Tunnel, which was officially opened to traffic. Its completion and opening to traffic has made the river-crossing traffic in Wuhan form a three-dimensional pattern of water, water and water, creating the history of underground river crossing in Wuhan, and the Chinese nation has realized its century-old dream of "tunneling through the Yangtze River".

-5 1 years ago, Wuhan Yangtze River Bridge, the first bridge of Wanli Yangtze River, was completed, and the natural moat became a thoroughfare. Half a century later, the first tunnel of Wanli Yangtze River was opened, and the cross-river traffic in Wuhan ushered in the "three-dimensional" era of "bridge crossing the river, boat crossing the river and tunnel crossing the river". With Governor Li Hongzhong's "opening to traffic" order, the traffic full of Wuhan people's pride and passion slowly entered the tunnel from the entrance near Yujiahu, Friendship Avenue in Wuchang. The motorcade sang and laughed all the way to the exit of Hankou Avenue, and the roadside was already crowded with warmly welcomed citizens. At the same time, the Yangtze River Tunnel from Hankou to Wuchang was also opened to traffic.

Mayor Ruan Chengfa said at the ceremony that the opening of the tunnel has turned a new page in the history of Wuhan's urban traffic construction, which is of great significance for alleviating the pressure of cross-river traffic in our city, speeding up the construction of Wuhan's modern comprehensive traffic system and promoting Wuhan's first rise in the central region. After the opening of the Yangtze River Tunnel, the traffic pressure of the Second Yangtze River Bridge will be relieved, and the single and double-day traffic mode of the Yangtze River Bridge will remain unchanged. According to the plan, the main function of Wuhan Yangtze River Tunnel is to undertake passenger traffic between Hankou Central District and Wuchang Central District, balance the traffic flow in the central district, reduce vehicle bypass and improve the traffic environment in the central city. According to the design capacity of the tunnel, the cross-strait road connection scheme and the road traffic situation in Hankou and Wuchang central cities, Wuhan Yangtze River Tunnel is expected to divert about 20% of the vehicles crossing the river in Wuhan central city, thus alleviating the traffic pressure of the Second Yangtze River Bridge to some extent. Before the opening of the tunnel, the daily average traffic volume of the river-crossing passage in the central city was about 98,000 vehicles for the Yangtze River Bridge and 6,543.8+0.39 million vehicles for the Second Yangtze River Bridge. The traffic police predicted that after the tunnel was opened to traffic, the daily traffic volume of the river-crossing passage in the central city was about 79,000 vehicles, the second Yangtze River Bridge 1.2 million vehicles and the Yangtze River Tunnel was 53,000 vehicles. Because the traffic pressure of the Yangtze River Bridge is still relatively high, it is necessary to continue to take single and double-day traffic measures to ensure smooth traffic.

With the continuous growth of traffic flow, it is predicted that the traffic flow of the three river-crossing channels will change greatly and the pressure will increase accordingly after the tunnel is opened to traffic for about one year. The traffic police predict that the number of motor vehicles in the city will exceed 1 10,000 in the next few years according to the annual growth rate of 8%. By then, the traffic flow across the river in the central city will reach about 400,000 vehicles, and the daily traffic pressure of the Yangtze River Bridge 1, Bridge 2 and Yangtze River Tunnel will be further increased. The Yangtze River Tunnel can only temporarily relieve the traffic pressure across the river. With the increasing number of motor vehicles, the pressure of crossing the river in the central city will gradually become prominent.