Brief introduction of Xicheng high-speed railway

(1) Railway grade: dedicated passenger line.

(2) Number of main lines: double lines.

(3) Speed target value: 250km/h.

(4) Minimum curve radius: 5500m.

(5) Main line spacing: Xi 'an-Jiangyou 4.6m.

(6) Maximum gradient: 25‰.

(7) Effective length of arrival-departure line: 650m.

(8) Traction type: electric power.

(9) Train type: EMU.

(10) Train operation control mode: automatic control.

(1 1) Dispatching and command mode: integrated dispatching and centralized. (1) Wen Chuan River Bridge

It passes through Chenggu County and Hantai District in Hanzhong City, Shaanxi Province, with a total length of 23.8km, and is the longest bridge in Shaanxi section of Xicheng Passenger Dedicated Line.

(2) Jialing River Bridge in Guangyuan

The bridge site is designed to span expressway, baoji-chengdu railway and Jialing River, which is a planned seven-level waterway. This bridge system is designed for exchange and navigation control.

(3) Bailongjiang Bridge

Design of bridge system exchange and navigation control. The line crosses Bailong River, three cement roads with a width of 2.5m-4m and asphalt roads with a width of 1 1m, connecting Mianguang Expressway. (1) Tianhuashan Tunnel in Qinling Mountains

Tianhuashan double-line tunnel in Qinling Mountains, with a total length of 15958m, is the first extra-long and high-risk tunnel in Shaanxi section of Xicheng Passenger Dedicated Line. Import mileage DgK 108+888.4, export mileage DgK 124+877.

(2) Hejialiang Tunnel

The total length of Hejialiang Tunnel is 12403m, with the entrance mileage DK297+ 190 and the exit mileage DK309+593. The maximum buried depth of the tunnel is about 750m, in which DK297+890.458~DK299+739.484 are located on the curve of R-8004.6m, and the rest are located on a straight line with a longitudinal slope of 20‰.

(3) Jin Jiayan Tunnel

The total length of Jin Jiayan tunnel is 1205 1m, with the entrance mileage DK449+883 and the exit mileage DK46 1+934.

(4) Huang Jialiang Tunnel

The total length of Huang Jialiang tunnel is 1 1639m, with the entrance mileage DK43 1+653 and the exit mileage DK443+292. The design is 6‰, 20‰ uphill and -3‰ herringbone slope. The maximum buried depth of the tunnel body is about 620 meters, which is influenced by oil and natural gas and belongs to a high gas tunnel.

(5) Tanjiashan Tunnel

The total length of Tanjiashan Tunnel is 8896m, with an entrance mileage of D6K36 1+350 and an exit mileage of D5K370+ 192. The tunnel is located between the provincial boundary and Guangyuan, and is a double-line tunnel with a line spacing of 4.6m It is designed with a herringbone slope of 3‰,-18.7‰.

(6) Guojiashan Tunnel

The total length of Guojiashan Tunnel is 790 1m, with an entrance mileage of D6K353+375 and an exit mileage of D6K36 1+276. It is designed as a herringbone slope of 3‰ and -6.3‰. The maximum buried depth of the tunnel body is about 505m m.

(7) Zhaojiayan Tunnel

The total length of Zhaojiayan Tunnel is 7594m, with an entrance mileage of D5K37 1+086 and an exit mileage of DK378+680. It is designed as a herringbone slope of 3‰ and -4.5‰. The maximum buried depth of the tunnel body is about 590m m.

(8) Laoanshan Tunnel

Lao Anshan Tunnel is located in the low mountain area at the southern foot of Qinling Mountains in Foping and ningshan county, Shaanxi Province, with a total length of 15 16 1 m, which is the second extra-long tunnel of Xicheng Passenger Dedicated Line. The tunnel started on April 20 13 19, which is very difficult. It is the key and difficult project of Xicheng Passenger Dedicated Line, and it is also one of the six first-class risk tunnels in the whole line. At about 3 o'clock on September 18 13, 2005, the passenger dedicated line of Ancheng Railway, which was fought by China Railway 12th Bureau for 29 months, passed through Guanzhong Plain, Qinling Mountain Area, Hanzhong Plain and Daba Mountain Area from north to south, with extremely complicated geological conditions. It is a high-standard modern railway with the most mountainous characteristics under construction in China. In particular, the section of Shaanxi Province where the line passes is very complicated in geology and geomorphology, which is a difficult and important area for the design and construction of the whole line.

The Shaanxi section of Xicheng Passenger Dedicated Line is dominated by bridges and tunnels, with 48 bridges127 km/and 34 tunnels189 km/,and the bridge-tunnel ratio is as high as 92. 1%, including 78.9 km /32 bridges and 32 tunnels1kloc-in Hanzhong. The total length of the line crossing the Qinling Mountains is135km, the tunnel mileage is as high as127km, and the bridge-tunnel ratio is as high as 94%. There are * * * 7 extra-long tunnels 10km or more, of which the designed longest Tianhuashan double-track tunnel is 15958m long. On April 27-30, 2009, the Ministry of Railways held a feasibility study review meeting for the Xi-Jiangyou section of the Xi-Chengdu Passenger Dedicated Line in Beijing. In the comparison of the construction schemes of the tunnel group crossing the Qinling Mountains from 2000 to 3000 meters, the Laoyu-Foping scheme obtained six pre-selected schemes, including Taipingyu-Ningshan, Laoyu-Foping and Shitouhe-Baohe. The route selection of Xicheng high-speed railway has also come to an end.

The steep slope of 25‰ is adopted for the first time in the tunnel group in Qinling Mountain area of Xicheng Railway, and the continuous section of steep slope is 46 kilometers long, which is the first attempt of high-standard modern railway construction in mountainous areas proposed by China. Because the continuous large ramp in mountainous areas has an important influence on the traction braking, traction power supply, operation safety and operation ability of motor cars, many key technical problems need to be overcome.

In order to overcome the difficult problem of building high-speed railway in steep and complex mountainous areas, the First Railway Institute carried out the research on "Related Technology of High-speed Railway with Continuous Long Slope, Extra-long Tunnel and Tunnel Group" in advance, and designed and selected a steep slope of 25‰ with a continuous slope of 47 kilometers, effectively shortening the length of the line crossing the Qinling Mountains, which is a brand-new attempt to build a high-standard modern railway in mountainous areas of China. In view of the area where the railway line passes through the nature reserve, the Institute of Iron and Steel Research has compared and selected several schemes for the ecologically sensitive areas in the process of designing the route selection, so as to avoid crossing the ecologically sensitive areas as much as possible, especially the sensitive areas such as nature reserves, water source protection areas and scenic spots, which are concentrated and distributed in the Qinling Mountains. There are strict regulations on the construction of road sections crossing Tianhuashan National Nature Reserve. In the environmental protection design of ibis national nature reserve in Hanzhong, Shaanxi, Caiziping Giant Panda Corridor and Qinling Giant Panda Habitat, it is required to minimize the impact of railway construction and operation on wildlife. Effectively coordinate engineering construction, economic development and environmental protection, and make Xicheng Passenger Dedicated Line truly become a green and environmentally friendly eco-railway demonstration line.

The Xi-Chengdu Passenger Dedicated Line has been partially reconstructed. The route modification section mainly involves environmentally sensitive areas such as Hanshuiyuan National Wetland Park in Ningqiang, Shaanxi. Previously, the bridge-tunnel ratio of Xicheng Passenger Dedicated Line was 84.7%. After the adjustment of the route scheme, the proportion of bridges and tunnels will also increase. The revised preliminary design has been adjusted in Jialing Jiangyuan Wetland Municipal Nature Reserve in Guangyuan, Sichuan. At the beginning, the line has moved eastward, crossing Jialing Jiangyuan Nature Reserve in the form of bridges and tunnels. The length of the reserve is 1588 1 m, and the proportion of bridges and tunnels is 93.5%. Jianmen Shudao Scenic Area faces the sky, and the line moves eastward away from the main scenic area, crossing in the form of an 800-meter tunnel. It is estimated that the line will cross in the form of bridges and tunnels in the old town of Lizhou and Chaotian Scenic Area, with a length of about 7.3 kilometers.

In the Caiziping Giant Panda Corridor in Shaanxi Province and the Hanshuiyuan National Wetland Park in Ningqiang, Shaanxi Province, the routes will also be adjusted, mainly by adding tunnels and bridges to reduce the impact on the natural ecological environment. On June 5438+1October 10, 2008, Sichuan Province and the Ministry of Railways signed the minutes of the provincial meeting to speed up the construction of Sichuan Railway, and proposed the construction of Xicheng Passenger Dedicated Line.

On August 27th, 2008, the State Council deliberated and passed the National Master Plan for Recovery and Reconstruction after Wenchuan Earthquake, and Xicheng Passenger Dedicated Line was included in it.

In June 5438+February 65438+February 2008, the Ministry of Railways passed the pre-feasibility study report of Xicheng Passenger Dedicated Line. On April 27th, 2009, the Ministry of Railways approved the feasibility study report of Xicheng Passenger Dedicated Line.

On May 22nd, 2009, the National Development and Reform Commission entrusted China International Engineering Consulting Company to evaluate the project proposal of Xicheng Passenger Dedicated Line.

On June 29th, 2009, the National Development and Reform Commission approved the plan of Xicheng Passenger Dedicated Line.

165438+20091October 20th, the National Development and Reform Commission entrusted China International Engineering Consulting Company to evaluate the feasibility study report of Xicheng Passenger Dedicated Line College. 20 10 65438+ 10 On October 20th, the Ministry of Railways conducted the preliminary design of Xicheng Passenger Dedicated Line.

On June 20 10, the Ministry of Land and Resources passed the pre-examination of land for Xicheng Passenger Dedicated Line.

On July 5, 20 10, the national development and reform commission listed the Xicheng passenger dedicated line project as one of the 23 key projects for the development of the western region that started in 20 10.

On 201September 16, the Ministry of Environmental Protection approved the environmental impact assessment report of Xicheng Passenger Dedicated Line.

2010101On October 23rd, the National Development and Reform Commission approved the feasibility study report of Xicheng Passenger Dedicated Line.

2010101010, 12 24, Sichuan province and Shaanxi province held mobilization meetings for the commencement of Xicheng passenger dedicated line project respectively. On 20th11Feb 10, the Ministry of Railways approved the preliminary design of Xicheng Passenger Dedicated Line.

On June 8, 20 1 1, the Ministry of Railways held a preliminary design review meeting for the Xi-Jiangyou section of the Xi-Chengdu passenger dedicated line in Beijing, and revised and reviewed the original design according to the macro-policy requirements of "keeping the scale under construction and reducing the scale of new construction". Xicheng passenger dedicated line has been adjusted from the original design speed of 350km/h to 250km/h, and the railway passenger dedicated line runs 120 pairs every day. The total length from Xi 'an to Jiangyou is 509.532km, with a total investment of 64.7 billion yuan (2.02 billion yuan less than the initial batch), and the total investment of 342.936km in Shaanxi is 44.255 billion yuan (only about131200 million yuan less than the initial batch). The line and station have not changed for the time being. 2012,21,the planning and docking of Hanzhong section of Xicheng passenger dedicated line was fully completed. On the basis of organizing technicians to inspect the supplementary survey, Xicheng Company and China Railway No.1 Hospital put forward the supplementary scheme that Hanzhong East Line is close to Yang 'an Line. At the same time, the special technical connection was made with the municipal planning department on urban roads, pipeline passages and other issues, and a consensus was reached, which drew a satisfactory conclusion for the supplementary revision of the preliminary design of Hanzhong Xicheng Passenger Dedicated Line.

201April 19-26, the Ministry of Railways presided over the preliminary design review meeting of Shaanxi An-Chengdu Passenger Dedicated Line and Baolan Passenger Dedicated Line. The preliminary design review of this revision is based on the new idea of national railway scientific development, combined with the safety evaluation opinions of 20 1 1 railway project, mainly to adjust the original design speed from 350 km/h to 250 km/h, and to optimize local lines. Both projects adopt the standards of double-track and passenger dedicated line, and are jointly funded by the local government of the Ministry of Railways. Grasp the preliminary work according to the goal of starting construction in the third quarter.

2065438+From June 25th to 27th, 2002, the Ministry of Railways presided over the preliminary design review meeting of Sichuan section of Ancheng Passenger Dedicated Line.

On August 20 12 10, the supplementary environmental impact assessment of Xi 'an-Jiangyou section of Xicheng Passenger Dedicated Line was first publicized. According to the published information, considering the protection of many environmentally sensitive areas, historical sites and the development of enterprises and institutions along the line, the line design has been adjusted, including lateral displacement and increasing the bridge-tunnel ratio. At the same time, the radio station settings have also changed. Xinchang Street Station and Chenggu North Station were added in Shaanxi, and Qingchuan Station and Jiangyou North Station were added in Sichuan. After adjustment, the number of main stations became 14.

On August 22nd, 20 12, Ancheng Passenger Dedicated Line will be started in the fourth quarter of 20 12 and is expected to be completed in 20 17.

On September 29th, 20 12, the Ministry of Railways issued a tender announcement for Xicheng Passenger Dedicated Line (Shaanxi Section), and the construction standard of Xicheng Passenger Dedicated Line was 250 km/h. ..

1October 27th 20 12, 10, Shaanxi section of Xicheng Passenger Dedicated Line officially started construction.

20 1 2165438+1October1The preliminary design of Xi 'an-cheng railway reconstruction project in Sichuan was officially approved by the Ministry of Railways. According to the approved preliminary design, Xicheng Railway is a two-lane passenger dedicated line with a design speed of 250 kilometers per hour. The construction mileage of Sichuan domestic section is 165.84 km, and the estimated investment is 20.632 billion yuan. There are 6 stations along the line: Guangyuan Neutron Station, Guangyuan, Guangyuan Jianmenguan Station, Guangyuan Qingchuan Station, Jiangyou North Station and Jiangyou * * *.

2012165438+1October 8th, Sichuan section of Ancheng Passenger Dedicated Line was invited for construction drawing review.

On February 9, 20 12, the construction of Foping Chaoyang Tunnel, a control project of Xicheng high-speed railway, was started, marking the official and comprehensive construction of Xicheng Passenger Dedicated Line, a traffic artery connecting the northwest and southwest and benefiting the people of Sichuan and Shaanxi.

20 12 On February 28th, Hanzhong held a meeting to promote the construction of Xicheng Passenger Dedicated Line. The mountain sections of Foping, Yangxian, Ningqiang and Mianxian in Hanzhong City have been officially started, and the Pingchuan section will also be started in the first quarter of 20 13. In October, 2065438+200365438+25/kloc-0, the first pile of Xicheng Passenger Dedicated Line was drilled, and the pile foundation construction of Donglaoyu Bridge in the second bid section of Xicheng Passenger Dedicated Line started.

2065438+On February 27th, 2003, the Sixth Bureau of China Railway 20th Bureau Group held a mobilization meeting for the 8th Bid Section of Xicheng Passenger Dedicated Line. At the meeting, Wu Qunhu, chief engineer, reported the general situation of No.8 Bid Section of Xicheng Passenger Dedicated Line and the construction tasks undertaken by the company. As the main force of the group in Xicheng Passenger Dedicated Line, the company is responsible for the construction of control projects such as Nanzheng Bridge, Jiajiahe Bridge, Fuchuan Tunnel and other related projects.

2013,21,construction started in Jiange County, Sichuan section of Xicheng Passenger Dedicated Line, and started in Jinzishan Township first. Construction project of Xicheng Passenger Dedicated Line in Jiange County, with total length of 14.8 13km, 6 tunnels, 6 bridges and/station 1 seat (Jianmenguan Station of Xicheng Passenger Dedicated Line). After the project is completed, it will play a very important role in improving the investment environment and promoting the economic development of Jiange County.

20 13 On March 26th, the mobilization meeting for the construction of jiangyou city in Sichuan section of Xicheng Passenger Dedicated Line was held.

The first pile cap was successfully poured in the sixth bid section of Shaanxi.

Before 20 13-05-30, the pile cap of pier Xicheng Kehe Bridge 178 was successfully poured, which was the first pile cap successfully poured in the sixth bid section of Xicheng Passenger Dedicated Line of China Railway Fifth Bureau. Weishuihe Bridge/pier bearing head of KLOC-0/7812.2m, 6.8m wide and 2.5m high. The successful pouring of the first pile cap of Weishuihe Bridge has laid a good foundation for the pier construction in the next step, marking the comprehensive development of the pier foundation construction in this bid section. As of 2014-10-13, 48 bridges and 34 tunnels in Shaanxi section of Xicheng Passenger Dedicated Line have been fully started, and the investment of the project is15.3 billion, accounting for 34% of the total investment.

Xi' an-cheng passenger dedicated line is an important part of China's medium and long-term railway network, and it is also the key project of our province this year. After the project is completed and opened to traffic, it will greatly shorten the linear distance between Xi and Chengdu, the two central cities in southwest and northwest China.

During the 11th period of this year, all employees who participated in the construction of the Second Bid Section and the First Work Area of Xicheng Passenger Dedicated Line gave up all their vacation time. At present, the surrounding rock of the tunnel is in good condition, about 200 meters per month. Among them, Qingliangshan Tunnel, the first tunnel from Xi to Qinling on Xicheng Passenger Dedicated Line, has a total length of 12.5 km, and nearly half of it has been completed. It is expected that the whole line will be completed by the end of next year.

201165438+1October 19, the reporter learned from Xicheng passenger dedicated line railway company that the first beam of Xicheng (Xi- Chengdu) railway passenger dedicated line (Sichuan section) began to be erected, marking the beginning of a new stage of Xicheng passenger dedicated line in Sichuan. As the first box girder is always bright in Lizhou, the box girder is 32 meters long and weighs 737.6 tons. The smooth erection of the first beam marks the phased progress in the construction of Xicheng Railway Passenger Dedicated Line (Sichuan Section). 20 15, 18 On September 8th, after 29 months' efforts, the Old Anshan Tunnel, the key control project of Xi 'an-Chengdu Passenger Dedicated Line, was successfully connected, becoming the first super-long high-speed railway tunnel to successfully cross the Qinling Mountains.

Lao Anshan Tunnel is located in the low mountain area at the southern foot of Qinling Mountains in Foping and ningshan county, Shaanxi Province, with a total length of 15 16 1 m, which is the second extra-long tunnel of Xicheng Passenger Dedicated Line. The tunnel started on April 20 13 19, which is very difficult. It is the key and difficult project of Xicheng Passenger Dedicated Line, and it is also one of the six first-class risk tunnels in the whole line. The successful completion of the tunnel laid a solid foundation for the opening of Xicheng Passenger Dedicated Line as scheduled.