The total length of the main line is 299.8km, the construction standard is double track passenger dedicated line, the proportion of bridges and tunnels accounts for 92%, the design speed is 350km / h, 11 stations are set along the way, and the construction period is 4.5 years.
It will strengthen the ties between the Guanzhong City Group and the middle reaches of the Yangtze River in the ten cities of Wuhan.
The reply report shows that the xi’an-10 high-speed railway is an integral part of the high-grade railway xi’an-wuhan high-speed railway in the national medium and long term railway network planning, and the project includes the main line and Xi’an hub related projects.
According to the Railway Office of Shiyan Municipal Development and Reform Commission, the Ministry of ecology and environment recently officially issued a document approving the environmental impact report of the new Xi’an Shiyan railway.
More than Yijun tunnel, the longest tunnel, according to the second EIA report of West Extension high-speed railway, the total length of new tunnels on the main line of West Extension high-speed railway is 167.69km/45, accounting for 55.94% of the total length of new main lines.
Referring to the previous cases, ixian.cn predicts that it will be approved within this month.
After the line is completed and put into operation, the operation time from Xi’an to Yan’an will be greatly shortened, only about 1 hour, which will help the old revolutionary base areas overcome poverty, promote the western development strategy, further improve and optimize the layout of the national high-speed railway network It is of great significance to enhance the regional advantages of Shaanxi Province and the hub status of the national railway network.
At present, the entrance and exit of Yijun tunnel and four inclined shafts have all been constructed into the tunnel.
XI’AN The longest tunnel of the West Extension high-speed railway was fully constructed.
After the completion of relevant pre requisites, the goal of starting the West 10 high-speed railway within the year will be realized as scheduled.
The line passes through Xi’an, Weinan, Tongchuan and Yan’an, and introduces the existing Yan’an station of Baoxi line.
After the relevant procedures are completed and the adjustment approval is obtained, the construction unit will organize the commencement of construction.
Starting from Yulin to the south, passing Yan’an and Tongchuan to Xi’an, and further reaching the whole country through the meter shaped high-speed rail network of Xi’an hub.
XI’AN The environmental impact assessment of the xi’an-shiyan high-speed railway was finally approved.
The Hubei advance section of the West 10 high-speed railway, which has previously said that it will start in September, obviously has the conditions for construction and is expected to start this month.
It is constructed according to the standard of double track electrified high-speed railway, with a design speed target value of 350km / h and a construction period of 4.5 years.
Route and station setting diagram of xi’an-shi’an high speed railway Xi’an / railway construction planning Xikang high speed railway station building, four electricity In June this year, the mobilization meeting for the commencement of Xi’an Ankang high-speed railway was held at the entrance of Qinling taixingshan tunnel in Chang’an District, Xi’an, marking the official commencement of the construction of this important “vertical” crossing Qinling and in the “meter” high-speed railway network in Shaanxi Province.
New high speed rail high speed rail high speed rail will form one belt, one road between Xi’an and Wuhan, to change the pattern of “roundabout” of the northwest to central China, Southern China, Jiangxi and Fujian, and to strengthen the “one belt and one way” construction and the “Yangtze River Economic Belt” and “western development” and other national strategies.
Reply! Bidding! Construction! Good news! Each progress indicates that the beautiful picture of the “meter shaped” high-speed rail network in Sanqin is not far away in the future.
Since the national development and Reform Commission has approved the feasibility study report of Xi’an Shiyan high speed railway project in April last year, it can promote the National Railway Group to perform the preliminary design, construction drawing approval (review) and bidding after obtaining the approval of the EIA report.
Yijun tunnel is located in Yintai district and Yijun County, Tongchuan City, Shaanxi Province.
For more dry goods, please pay attention to our website: www.ixian.cn recently, new progress has been heard from the West Extension high-speed railway, West 10 high-speed railway and Xikang high-speed railway in Shaanxi’s “meter shaped” high-speed railway network.
Meanwhile, the feasibility study report of Yanyu Hubei high speed railway, which continues to extend northward, has been subject to technical review by China Railway Group, and the design unit is revising and improving it according to the review opinions.
It is understood that as of September, the line scheme of Xi’an Tongchuan section of West Extension high-speed railway has been determined through technical review by China Railway Group, and relevant pre-approval procedures are being supplemented.
It is a class I high-risk tunnel.
It is of great significance to improve the layout of the national high-speed railway network, promote the revitalization of villages in Qinba mountain area, and accelerate the tourism and socio-economic development along the line.
It is understood that at present, all temporary works have been completed in work area 3 of bid 4 of West Extension railway, and the main works have entered the construction stage.
With a total length of 17.5km, it is designed as a single tunnel and double track tunnel.
For example, the smooth commencement of the construction of the West 10 high-speed railway also means that the construction of Xi’an east railway station can be put on the agenda.
At present, the operation rate of Tongchuan Yan’an section of West Extension high-speed railway has reached 51%, more than 7000 people have entered the site, and the key control projects have been fully started.
So far, Yijun tunnel, the longest tunnel and key and difficult project in Tongchuan Yan’an section of Xi’an Yan’an high-speed railway, has fully entered the tunnel construction stage.
In April this year, the Ministry of ecology and environment accepted the environmental impact assessment scheme of the design unit of the new railway xi’an-shiyan line, but it has not been publicized.
At the same time, the road and land are negotiating the construction mode, investment proportion and other matters.
On September 18, the prequalification announcement of total price contracting for construction of xkzq-1 bid of new XI’AN-ANKANG high-speed railway station project, new XI’AN-ANKANG high-speed railway station building project and new XI’AN-ANKANG high-speed railway “four electricity” system integration project was officially released.
Although there are bullet trains from Xi’an to Yan’an, it takes more than 2 hours to complete the whole process.
He also said that with the formal commencement of the construction of the West 10 high-speed railway, the project construction will be subject to the supervision and inspection of the ecological environment department.
It means that the project is about to enter the full-scale construction stage..
The tunnels along the whole line are mainly distributed between Tongchuan station and Yan’an station, which are consistent with the number and location of the original EIA; Use 1.459km/tunnel of Baoxi existing line; In addition, a new double track tunnel of 3.770km is built on the existing Baotou west line, accounting for 58.5% of the line length.
This is because the xi’an-shiyan high-speed railway passes through environmental sensitive areas such as Qinling Mountains, with extremely strict requirements for environmental protection and water conservation, long project design cycle and high requirements for approval of environmental impact assessment, The propulsion time lags behind.
It passes through many shallow buried gullies and three fault fracture zones.
There are potential safety hazards such as landslide, collapse and large deformation.
Compared with the original EIA, 3.34km/1 Fuping tunnel was cancelled, and three tunnels, Yaocun Mingdong tunnel, jingshanyuan tunnel and qinggangling Mingdong tunnel, with a total length of 4887.4m, were added.
The cumulative footage of zhaojiayuan tunnel is 24.6m, and that of Sujiazhuang tunnel is 39.4m.
The main line starts from 1km north of Xi’an east railway station (including) and connects to the existing Shiyan east railway station (excluding), with a length of 255.749km, 169.39km in Shaanxi and 86.35km in Hubei.
The West Extension high-speed railway is an important part of the Baohai channel, the main channel of the national “eight vertical and eight horizontal” high-speed railway, and the “meter” shaped high-speed railway network in Shaanxi Province.
It is understood that in order to ensure the safety of entering the tunnel, Yijun tunnel adds pipe shed and advance small conduit at the arch before entering the tunnel to strengthen the lining section and prevent landslide risk.
When the tunnel body crosses the shallow buried section of the valley and the fault fracture zone, the three-step reserved core soil method shall be adopted for construction, the support measures shall be improved, and the advance support in the tunnel and surrounding rock monitoring and measurement shall be done to prevent the risk of collapse and provide a solid guarantee for the safety of on-site construction.
Due to the adjustment of the line scheme of the Xi’an Tongchuan section of the West Extension high-speed railway, the Tongchuan Yan’an section of the West Extension high-speed railway was started in May this year.
The maximum buried depth of the tunnel is 395m.
After the completion of Yanyu Hubei high-speed railway, the operation time of Xi’an Yulin railway will be further shortened to about 2.5 hours.
On the morning of September 17, at the entrance section of Yijun tunnel of the West Extension high-speed railway, with the roar of several machines, the constructors carried out the installation of pipe shed guide pipes and site leveling in an orderly manner.
Until September 7, the Ministry of ecological environment officially reviewed and publicized the EIA documents of Xi’an Shiyan high-speed railway.
It is the longest tunnel extending the whole line of high-speed railway in the West.
