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The author:(作者)aaapublished in(发表于) 2014/7/16 9:11:13 China Academy of railway Sciences： Jing Zhang inter-city rail three times beneath the great wall
This year, Beijing and Zhangjiakou City, Hebei province jointly bid to host the 2022 Winter Olympics again let jingzhang intercity railway construction on its agenda. Yesterday, the China Academy of railway Sciences announced a new railway from Beijing to Zhangjiakou Intercity Badaling mountain throughout the environment impact statement. Said in a report, 3 times within which works in Beijing under the great wall (Badaling and water off). Tunnel effect of blasting vibration of train and railroad lines on the landscape becomes the focus of public attention.
Great Wall scenic area built railway lines will be "wet blanket"?
Tunneling using "no hole in door openings"
New intercity railway between Beijing and Zhangjiakou in Badaling mountain new is line in paragraph 15.44 kilometers in length, the line will be mainly for tunneling through the core of Badaling-Shisanling national scenic area and perimeter protection zones. Rail link, the construction of the bridge, the new station will not cause damage to the scenic landscape of the great wall, visitors total visitors feel?
Environmental reporting on these issues is illustrated in the book. Proposed works will cross the Juyongguan and Badaling great wall great wall scenic spots area the two core area. In the area of project will be two crossing the great wall from the ground. Jingzhang railway works ground structures such as bridges, stations, incline, the roadbed on the landscape and the impact on the Visual environment of the scenic resources.
Among them, the bridge will use the "Add landscape view" approach, in designing concise, tunnel engineering and environment coordination degree higher is recommended-free door opening. This combination of hole and surrounding mountains form a natural look. Meanwhile, stations installed at Badaling great wall scenic spot will not be higher than 6 metres in height.
In addition, attractions Scenic rail line bridges exposed surface distance is 2 kilometres away, the exposed surface is less than 300 metres in length, evaluation results caused to Badaling and Juyongguan pass scenic landscape and Visual impacts of environmental effects is small.
Tunnel blasting would "vibration" great wall?
Tunnel blasting explosives with special
Beijing-Badaling CROSSLINE Intercity section over 98% bridge and tunnel projects, tunnels were dug under the blast would "vibration" the great wall?
Mentioned in the report, the proposed project will be two times under the Badaling great wall, beneath the water off the wall. In order to protect the historical and cultural heritage of the great wall, scientific assessment of Beijing-Zhangjiakou train runs on the great wall on a scale, the Unit conducted a thematic evaluation of, formed the new railway intercity railway between Beijing and Zhangjiakou great wall of the impact assessment report.
During construction on the primary cause of the great wall is the main influence for the tunnel blasting, relevant departments have been tested, at present, have been identified under the vibration of blasting allowed maximum value
By theory and simulation calculations showed that vibration levels lower than the existing Beijing-baotou line, vibration velocity is much smaller than allowable standards, would not impact on the structure of the great wall safe.
They suggested that through the wall of the tunnel excavation blasting vibration should be strictly controlled, North Green newspaper reporter notes that special tunnel construction was proposed in the report. Should be excavated by drill and blast, tunnel blasting noise special explosives can be used, and small gun operation, to reduce the environmental impact of holing blasting operation.
Trains will run every day, "vibration and crisp" great wall?
Using "CWR" reduces vibration
EIA report noted that during the operating period of the project's environmental impact will come from the lines, stations, and so on. Environmental impact of train: train-induced vibration effect on residential, cultural relics, such as at the top of the tunnel. "Vibration crisp" great concern become worried.
It is understood that in planning of Beijing-Zhangjiakou City in the near future, after the opening of Beijing-Zhangjiakou daily Intercity train 91, forward can reach 130. Design of speed target value 250km/h, all used EMU.
Report shows that in response to this problem, design units were taken into account. In order to lower strength, reducing train vibration trains
Operating vibration impacts on heritage, of track structure in the tunnel design recommends the use of ballastless track design. Rail of trans-section CWR are used. So that the design can reduce vibration of railway operating, on the reserve is within the scope of ancient architecture, ancient Guo vibration levels to a minimum.
Is expected to achieve passenger yields
120 million yuan each year
The construction works are scheduled to start in 2014, 2018. Project total estimated investment of 2,896,620,000 yuan. Among them, about 36.907 million Yuan investment in environmental protection, investment in environmental protection accounted for 1.3% project.
It is understood that the jingzhang railway's construction time in half allowing tourists to reach Badaling. Now 919 proceeding from deshengmen, Beijing-Tibet Expressway No 2 hours a day ordinary buses, air-conditioned express 1 hour 10 minutes. Beijing-Zhangjiakou City opened, journey time would be reduced by half. Jingzhang railway also reported new income is calculated. Jingzhang railway passenger price of 0.35 Yuan per passenger kilometres, 343.6944 million 2025 projected one-way passenger-km. Passenger benefits was 120.293 million yuan per year can be calculated. This version of text/reporter Wang Wei
Fans attention
Not mentioned in the underpass Qinglongqiao railway station report
"Badaling mountain section of newly-built railway from Beijing to Zhangjiakou railway project environmental impact assessment public participation in public for the first time" when this newspaper reported the fans worried about "national security" Centennial Qinglongqiao railway station will be adversely affected.
In March 2013, be approved and announced by the State Council, the seventh instalment amounts to 1943 list of national key cultural relics protection units, Beijing total of 27 heritage list. Among them, was 104-year-old Beijing-Zhangjiakou railway nankou-Badaling section was upgraded to "State security." This is the 7th instalment of "State security" only continued to operate a railway in the list. The Beijing-Badaling mountain project is part of the construction coincided with "national security" coincide.
Yesterday, the North Green newspaper reporter found that in the whole of the EIA report did not specifically refer to "nankou-Badaling section" Qinglongqiao railway station and the "new country" measures of protection. Yesterday, the reporter called Beijing Intercity company, said the firm's staff to ask EIA units for specific situations. Reporter once again contact the China Academy of railway Sciences due to personnel responsible for the project runs out the site throughout the day, journalists failed to understand the details.
Press the memory
Beijing-Badaling CROSSLINE Intercity section
Badaling mountain section of Beijing-Zhangjiakou railway line from Juyongguan pass tunnel entrance to Badaling exit tunnel, 15.44 kilometers in length. This section consists of 2 mountain tunnel, of 15.054 km, one of the most new full-length Badaling tunnel Tunnel 12010 meters. Temple bridge in a city set up nine cents. New great wall at Badaling station 1, underground stations. Railway passenger rating for designs targeted speed 250 km/h, with EMU.
Beijing intercity railway
In 2010, the Beijing-Zhangjiakou railway passenger dedicated line project proposal by the national development and Reform Commission approved. Jingzhang railway passenger dedicated line is about 174 km, total investment estimated at 31.176 billion yuan. It was built and put into use, will enable Beijing passenger transport between the two places and short by today's fastest 3 hours for about 1 hour. New Beijing-Zhangjiakou railway passenger dedicated line from the Beijing North railway station, Haidian, Changping, yanqing, Huailai, between Xuanhua Zhangjiakou in Hebei province. Target speed of 250 km/h for passenger trains.
After approval, the project has not started. This year, Beijing and Zhangjiakou City, Hebei province jointly bid to host the 2022 Winter Olympics, news was put on the agenda by Beijing and the construction of passenger dedicated line.
(Original title: Jing Zhang intercity railway beneath the great wall three times)
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