brief introduction
Zhangjiajie-Nanchong Expressway, referred to as Zhang Nan Expressway for short, and China National Expressway Network number is G55 15, which is the connecting line of Erguang Expressway (G55) and the newly added national highway in the National Highway Network Planning (20 13-2030) issued on 2013, with the main control along the route.
In fact, the starting point of G55 15 is not on the G55 main line, but at the end point of Changsha-Yiyang-Changde (where the G55 main line passes)-Cili-Zhangjiajie Expressway (China National Expressway Network number is G55 13, in which Cili to Zhangjiajie, G59***).
circuit
Zhangjiajie-Nanchong Expressway, referred to as Zhang Nan Expressway for short, generally runs in the southeast and northwest, passing through four provinces and cities of Hunan, Hubei, Chongqing and Sichuan.
Hunan province
Zhang Nan Expressway passes through Zhangjiajie City, Sangzhi County and Longshan County, Hunan Province, and consists of Zhangsang Expressway (newly built), Sanglong Expressway (newly built) and Longyong Expressway. Longshan Hub is at the junction of Xiangeqing Ganbizhai.
1, Zhangsang Expressway starts from Yinjiaxi Town, Zhangjiajie City and is led out by Zhanghua Expressway. Pass Guanping, Tangjiawan and Jiaozi Cliff, connect Wulingyuan West in Jiaozi Cliff of Yongding County, then pass Qiaotou, Xiaoxigou, Huangxiang Bay, Niaoling and Dingjiayu, connect Sangzhidong in Changtan Village of Liyuan, and then pass Zhujiaping, Bird's Nest and Zhujiayuan. It ends at Huilong Village, Hongjiaguan Bai Township, Sangzhi County, with a mileage of 46.950 kilometers. The whole line is built according to the standard of four-lane expressway, with a design speed of 80km/h and a subgrade width of 24.5 m; The connecting line (within Sangzhi territory) 19.8km adopts secondary highway standard, with design speed of 60km/h and subgrade width of 10m.
The total planned construction period of this project is 48 months, including 30 months for civil engineering and 0/8 months for pavement engineering. It is expected to be completed and opened to traffic by the end of 2065, 438+07.
2. Sangzhi-Longshan Expressway is a section of Zhangjiajie-Longshan Expressway and the planning of expressway network in Hunan Province. Seven verticals, nine horizontals and three rings? As a part of Xinhua-Longshan Expressway, it is also one of the north-south passages in northwest Hunan. The project starts from Sangzhi He Long Power Station, connects with Longyong Expressway, passes through Shuitianba and Ciyantang, and ends at Longshanshui Shaping. The total length of the route is 68.65 kilometers, the planned land area is 2,500 mu, and the estimated investment is about 7 billion yuan. The whole line is built according to the standard of two-way four-lane expressway, with a design speed of 80km/h and a subgrade width of 24.5m m. ..
On March 4th, 20 16, the review meeting of the engineering feasibility study report was held in Changsha. At the meeting, Longshan County suggested that the Provincial Development and Reform Commission change the junction point of Sanglong Expressway and Longyong Expressway from Shuishaping in Longshan County to Gypsum Street (near Longshan Railway Station of the former Zhangchang Railway). After the route change, the total length of Sanglong Expressway is 76.2 kilometers (8.2 kilometers more than originally planned), and the total cost is nearly 8 billion yuan (65.438 billion yuan more than originally planned).
3. The line runs from Sanglong Expressway Station to the north along Longyong Expressway, passes through Longshan County, ends at the border of Hunan and Hubei in Ganbizhai, and then connects with Enlai Expressway G69 1 1. The section from Longshan to Ganbizhai of Longyong Expressway was opened to traffic on February 3, 20 15, and the whole line was completed and opened to traffic on September 20 16.
Hubei province
Zhang Nan Expressway passes through laifeng county, Xuan 'en and Xianfeng counties in Hubei Province, and consists of Laixian Expressway (newly built) and Hubei section of Enqian Expressway.
Laixian Expressway 1, the line is led out from Enlai Expressway (G69 1 1) and Erhuzhai Village (ELK8 1+600) in Lijiahe Town, and a T-junction is set, heading northwest, and a Sanhu Interchange is set in the north of Sanhu Township in laifeng county to connect with S248; Continue to the northwest to Bao Zhong Town, Xianfeng County, and set up Bao Zhong Interchange in Yangjiadian Village to connect with S248; The line continues to move to the northwest, and the line is laid along the backflow ditch. The Xianfeng South Interchange is set in the lime kiln to connect with S232. Continue along the backflow ditch to Xiaomo Village, Leshan Town, and finally reach Qian Xuan Expressway (XQK82+ 100), where a T-junction interchange is set to connect with Enqian Expressway. The mileage of the whole line is 37. 133km, the design speed is 80km/h, the subgrade width is 24.5m, the design standard of two-way four-lane expressway is designed, and the load level is Grade I; There are 5 interchanges, 2 connecting lines and 3 ramp toll stations (corresponding to interchanges, except hub interchanges), 1 service area, 1 maintenance management center.
2. Along Hubei section of En-Qian Expressway (from Xianfeng Interchange Hub to Shimenkan-Hubei-Chongqing Boundary), the southwest ends at Hubei-Chongqing Boundary. 2065438+It was completed and opened to traffic on February 26th, 2004.
Chongqing
Zhang Nan Expressway passes through Qianjiang District, Shizhu County, Zhongxian County and liangping county in Chongqing, and consists of Chongqing section of En-Qian Expressway (the intersection of Shimen Kanyu-Hubei boundary and the west mountain of Xijiang River), Qianshi Expressway (newly built), G50 Huyu Expressway * * and Liang Zhong Expressway (newly built).
1, Chongqing section of Qian-en Expressway starts from Chongqing-Hubei border and ends at Qianjiang Xiceshan junction, with a mileage of 20.049 kilometers. 20 15 was completed and opened to traffic on February 30th.
2. Guizhou-Shijiazhuang Expressway, after the intersection of Registered Mountain Hub and Baomao Expressway G65, turns to the northwest, passes through Qianjiang Heixi, Pengshui Lianhu and Shizhu Mawu, and connects with Shanghai-Chongqing Expressway (G50) in Sandian Village, Sanhe Township, Shizhu, with a total length of about 90 kilometers (of which bridges and tunnels account for 85%), with a total investment of 65.438+0.24 billion yuan and a design speed of 80 kilometers per hour.
20 15 12.30, Qianjiang section of Guishi Expressway was officially opened. Shizhu section will be officially opened in July 20 16.
3. This line and the * * * line of Shanghai-Chongqing Expressway (G50) have been completed and opened to traffic.
4. Liang Zhong Expressway starts from Bashansi Interchange near Bashan Middle School in Zhongxian County of Shanghai-Chongqing Expressway (G50) and ends at Yuchuanjie, Bishan Town, liangping county, with a total length of 7 1.578km, a design speed of 80 km/h, four lanes in both directions, seven interchanges, service area 1 and open parking area 1. It is expected that 20 16 will be completed and opened to traffic.
Sichuan Province
That is, Nandaliang Expressway, after connecting with Liang Zhong Expressway at the Sichuan-Chongqing boundary of Shiqiaopu Town in Dazhu County, the route passes through Dazhu County in the northwest, then passes through Huayingshan Tunnel to Quxian County, then turns southwest after passing through yingshan county, and ends at the interchange hub of Dongcaojiashan Village in Nanchong City, Hu Rong Expressway (G42). The whole line is about 142km, the design speed is 80km/h, and the subgrade width is 24.5m ..
2065438+On February 28th, 2003, 65438+2003, the 94km section from Nanchong to Quxian was officially completed and opened to traffic. There are 66 bridges and 8 tunnels in this section. * * There are 7 off-ramp toll stations in Gaopingdong, Peng 'an Li Xi, Peng 'an, Yingshan Xiaoqiao, Jingbian and Quxian, 2 service areas (Yingshan service area and Quxian service area) and 2 parking areas (Gaoping parking area and Sixi parking area).
20 15 12 10: Quxian-Dazhu section (except Huayingshan tunnel, which is still under construction) is open to traffic. 20 15 12 10: the section from Yuehua to Yangjia in Dazhu is open to traffic. Moon Bay in Dazhu County was opened to traffic this time? Yangjia section is about 34 kilometers long, and two toll stations, Yangjia Station and Dazhu Yuehua Station, have been opened.
On the morning of April 28th, 20 16, with? Boom construction lasted 1806 days, and Huayingshan extra-long tunnel of Nandaliang Expressway in Quxian County, Dazhou City was completed. Huayingshan Extra-long Tunnel is 8156m long, which mainly passes through Huayingshan anticline and Daxiakou fault. There are bad geology and special geology such as fault fracture zone, karst and karst water, gypsum and dissolved salt breccia, weak surrounding rock, coal seam, goaf, gas and hydrogen sulfide toxic and harmful gas, and the construction difficulty is rare in China. According to the person in charge of the project construction, after the completion of the tunnel, follow-up projects such as ventilation shaft construction and electromechanical installation will be carried out, and it will be completed and opened to traffic on 20 16 and 10.
It is understood that in the past, it took an hour for vehicles to travel to and from Quxian and Dazhu, and it took an hour to climb the winding mountain of Huaying Mountain. Less than 10 minutes after the tunnel is opened to traffic. Its penetration has opened up another eastward exit channel in Sichuan, forming the most convenient big channel between Northeast Sichuan Economic Zone and urban agglomeration, which will enhance the integration of logistics economy and regional transportation in Nanchong, Dazhou and the whole urban agglomeration in Northeast Sichuan and northern Chengdu-Chongqing Economic Zone, and directly provide important transportation guarantee for Nanchong, Dazhou and the whole Northeast Sichuan to build a well-off society in an all-round way and speed up poverty alleviation.
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