Tunnel scale
Qinling Zhong Nanshan Highway Tunnel is the control project of Baomao Line of the National expressway Network, and it is also an important part from Xi to Ankang expressway in the "three verticals, four horizontals and five horizontals" expressway network in Shaanxi Province. The single tunnel is 18.02km long and the double tunnel is 36.04km long. The construction scale is the largest in the world and the largest highway tunnel in China. It is second only to the Laierduo Highway Tunnel in Norway, with a total length of 24.5 1 km. In March, 2002, the first shot of this huge tunnel was fired in the depths of Zhong Nanshan Mountain in Qinling Mountains. In the process of construction, builders constantly overcome construction difficulties such as faults, water inrush and rockburst, as well as major technical problems in operation such as ventilation, fire fighting and monitoring, which has made China's highway tunnel construction technology reach a new level. On June 20, 2007, the tunnel was officially opened to traffic.
The world's longest double-hole highway tunnel —— Qinling Zhong Nanshan Highway Tunnel. The tunnel is a super-large control project of Baotou -Xi- Chongqing-Beihai and Yinchuan -Xi- Wuhan lines in the national expressway network planning. It is also a transportation hub connecting the Yellow River Economic Circle and the Yangtze River Economic Circle, and it is also a control project connecting Xi 'an to Ankang expressway in the "three verticals, four horizontals and five radiations" highway skeleton network in Shaanxi Province. Its completion is of great significance to the implementation of the western development strategy and the economic exchanges between Shaanxi Province and neighboring provinces and cities.
Qinling Zhong Nanshan Highway Tunnel starts from Wutai Township, Chang 'an District, Xi in the north and ends in Yingpan Town, Zhashui County, Shangluo City in the south. The entrance is located on the right bank of Shibiyu River in Qingcha Village, Shibiyu Township, Chang 'an District, Xi City, with an altitude of 896 m; The exit is located on the right bank of Yutai River, Xiaoyu Street, Yingpan Town, Zhashui County, with an altitude of1026 m. There is a herringbone longitudinal slope in the cave, with the maximum longitudinal slope 1. 1% and the maximum buried depth1640 m. The total length of single tunnel is 18.02km, and the total length of double tunnels is 36.04km The tunnel is built according to the standard of two-lane expressway. Tunnel width 10.5m, with a height limit of 5m; The design speed is 80 km/h and the total investment is 365,438+93 million yuan.
Expressway, Shaanxi Province ranks first in the west in mileage.
The penetration of expressway has created a myth in the hinterland of Qinling Mountains, and highway builders hope to recreate miracles on the land of Sanqin. Zhongnanshan Tunnel in Qinling Mountain is just a small epitome of the great development of Shaanxi traffic construction. The past five years have witnessed the largest investment, the largest construction scale and the fastest traffic development in Shaanxi. "China No.1 Tunnel" runs through it, and the north-south corridor from Xi 'an to Shaanxi-Mongolia Expressway runs through the whole line. The railway runs through the north and south, forming an "iron backbone" of more than 1 100 kilometers.
In the past five years, the traffic mileage in Shaanxi has almost doubled. Around the national and provincial trunk lines, expressway, such as Xi-Huxian, Yan 'an-Ansai, Yulin-Jingbian, Xi 'an Ring Expressway, Airport Expressway, Jingbian-Wangquanliang, Xi 'an-Zhashui, Huangling-Yan 'an and Jingbian-Ansai, have been built in succession. And these expressway are narrowing the distance between our province and neighboring provinces. With Xi 'an as the center, the expressway network of "three verticals, four horizontals and five radiations" is gradually taking shape. More and more areas with expressway have tasted the sweetness of access.
From June, 5438 to October, 2008/KLOC-0, the mileage of expressway in Shaanxi Province exceeded 2,000 kilometers, reaching 2,064 kilometers, ranking first in the western provinces of China, and the national trunk line of "five verticals and seven horizontals" planned by the state was completely connected in Shaanxi.
To get rich, build roads first; The road is smooth and the development opportunity is coming. Shaanxi is the "bridgehead" of the western development. In the past five years, Shaanxi has experienced a period of rapid development of road network construction. Since 2002, the perfection of modern transportation networks such as roads, railways and airports has provided and will continue to provide more convenient transportation conditions for the rapid development of Shaanxi's economy.
The difficulty of Shu Dao is, first of all, on a majestic mountain that spans thousands of miles. This is the Qinling Mountains. Like an insurmountable barrier, Bashu water town is strictly divided and separated from Guanzhong Plain. The Qinling Zhongnanshan Tunnel, the world's first tunnel successfully opened to traffic in 2007 1 month, shortened the 130 km from Xi 'an to Zhashui to 65 km, and it only took 15 minutes to easily cross the Qinling Mountains.
Counting several roads crossing the Qinling Mountains, although they were built in different years, lead in different directions and even have different road properties, as long as they cross the Qinling Mountains, they can all be described in four words: twists and turns. The total length of Zhongnanshan Tunnel is18.02km, which goes straight through Zhong Nanshan in Qinling Mountains. It starts from Qingcha, Chang 'an District, Xi City in the north and ends at Yingpan Town, Zhashui County, Shangzhou City. It is a two-hole and two-lane tunnel with upper and lower lines.
The length of this tunnel is equivalent to the sum of 3.6 Chang 'an Streets in Beijing. Enter from the north entrance of Zhongnanshan Tunnel in Qinling Mountains, and go south 18.2km across Qinling Mountains. The design speed of Zhongnanshan Tunnel in Qinling Mountains is 80 kilometers per hour, and the whole journey takes about 15 minutes. In this 15 minute, you can fully feel the uniqueness of this tunnel.
Lights in different positions and colors form a world of light in the tunnel. What's more, it won't be long before you walk, and you will see a bright front, as if you were going to the mouth of the cave. There are white clouds in the sky and trees on the ground. The special lighting zone in the tunnel is 150m long and 20.9m wide, just like a pocket park in the tunnel.
Due to the completion of the tunnel, the highway mileage from Xi 'an to Zhashui will be shortened by 60 kilometers and the driving time will be shortened by 2.5 hours. The completion of the tunnel will completely eliminate the backward traffic, which is a major bottleneck hindering the development of southern Shaanxi. It is of great significance to improve the traffic in northwest, central and southwest China, promote the social and economic development in Qinba Mountain area and promote the economic exchanges between Shaanxi Province and neighboring provinces and cities.
It is understood that the Zhongnanshan Tunnel in Qinling Mountain has created the largest of the six expressway tunnels in China: the world's first double-hole expressway tunnel, with a total length of 18.02 km; The first tunnel in China with the highest level of design, construction, supervision, management and integration; The shaft ventilation project with the largest diameter and the highest depth in the world; Have the most perfect monitoring system in expressway; The world's most advanced special lighting belt for highway tunnels; The strategy management theory is put forward for the first time, and the first set of strategy automatic generation software is used to automatically monitor and manage fires, traffic accidents and maintenance. In this sense, the technical significance of Qinling Zhongnanshan Tunnel is not only in Shaanxi, but also in the world.
Tunnel correlation
Xi 'an-Zhashui expressway, completed in the same period, is an important section of the main skeleton road network in Shaanxi Province, which runs through the north-south axis of Shaanxi Province. The construction of the project is divided into two parts: Lingbei and Lingnan, with the Qinling Mountains as the boundary. Construction began in February 2004. The total length of the route is 65.02km (including Qinling Zhong Nanshan Highway Tunnel 18.02km), and the construction mileage is 43.5km The whole line is built according to the four-lane expressway standard.
The completion of Xizhou expressway is of great strategic significance for connecting Guanzhong and southern Shaanxi economic zones, strengthening regional economic exchanges and cooperation, promoting the all-round economic and social development of our province, and especially accelerating the people in Shangluo and Ankang mountainous areas to get rid of poverty and become rich.
Tunnel overview
Qinling Zhong Nanshan Highway Tunnel starts from Qinghua, Chang 'an District, Xi 'an in the north, connects with the northern section of expressway Ling, Zhashui, passes through Qinling Zhong Nanshan Highway Tunnel, ends in Yingpan Town, Zhashui County, Shangzhou City, and connects with the Lingnan section of Xi 'an to Zhashui expressway. The design level is expressway, with two holes and two lanes, with ascending and descending. It is a demonstration project and landmark project of expressway Tunnel in China. It is the longest double tunnel in the world, with the highest technical standard and the largest construction scale in expressway. It has a leading international disaster prevention and rescue system, monitoring and management system and operation service system.
The operation ventilation of Qinling Zhong Nanshan Highway Tunnel adopts vertical sectional ventilation with three shafts. The tunnel is equipped with eight systems including lighting, ventilation, fire fighting, communication, rescue, traffic safety control, power supply and distribution, and monitoring.
operation management
Qinling Zhong Nanshan Highway Tunnel is a super-long world-class mountain expressway tunnel. Lack of experience in project design, construction, scientific research and operation management. In order to make a prudent decision, the expert committee of Qinling Highway Tunnel, composed of four academicians, namely, Wang, Wang and Wang, was established in this project to review and consult major design projects and design standards. Several important meetings were held successively to consult and study major technical problems in engineering design, construction and scientific research, which effectively solved technical problems such as ventilation, electromechanical control, disaster prevention and rescue, bolting and shotcreting support, crosswalk and vehicle crosswalk setting, and provided decision-making basis for engineering design, construction and operation management.
Relying on the technical difficulties of Zhong Nanshan Highway Tunnel in Qinling Mountains and supported by the Science and Technology Fund for Western Traffic Construction of the Ministry of Communications, the project "Research on Key Technologies of Qinling Zhong Nanshan Extra-long Highway Tunnel" was established, and seven topics including ventilation, disaster prevention and rescue, monitoring, quota, environmental protection, operation management and information were studied. Among them, many achievements such as operation ventilation technology, disaster prevention and rescue technology and monitoring technology have passed expert appraisal and reached the world leading level. It is applied to engineering technical design, construction management and subsequent operation management, which improves the technical level of the project as a whole.
technical exchange
Invite three foreign consulting companies for technical exchange and consultation. Bocheng Company in China, Watt Company in Switzerland and Xintaifu Company in Norway exchanged and consulted on operation ventilation, monitoring, disaster prevention and rescue, power supply and distribution, lighting and operation management technology respectively.
Investigation of extra-long tunnels at home and abroad. The extra-long tunnels in Japan, America, Austria, Germany, Norway and other European and American countries were investigated on the spot. From perceptual knowledge to special research, we have absorbed the experience and lessons of three tunnel fires in Europe, and borrowed advanced control modes, various ventilation modes and lighting modes.
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