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Original title: Yinxi High-Speed Railway was officially opened and Ningxia was integrated into the national high-speed railway network.
Intensify the acceleration of economic development
Our reporter Qin Ruijie
At 9:05 a.m. on December 26, the first EMU train of the Yinxi-Xi’an high-speed railway D4385, slowly left the station from north to south, heading for Xi’an, Shaanxi. Since then, the running time of the Yinchuan to Xi’an train has been reduced from the longest 15 hours to the shortest 3 hours.
The people along this high-speed rail line have been waiting for you for 5 years. With the opening of the Yinxi high-speed railway, Ningxia has been officially integrated into the national high-speed railway network.
On the other side of Ningganshan, Yinchuan Link
“It’s finally time to leave the autonomous region!” Dong Fang, the conductor of the first Yinxi high-speed railway, said excitedly. On December 29, 2019, the Yinchuan-Zhongwei high-speed train was inaugurated. As the conductor of the first train at the time, Dong Fang witnessed the opening of the first high-speed train in Ningxia. Nowadays, Yinxi High-Speed Railway and Yinzhong High-speed Railway go together to Wuzhong City. After passing through the fork, it continues to stretch 543 kilometers southeast, crossing Ganshan and Shaanxi, to Xi’an North Station.
As an important part of the “Eight Vertical and Eight Horizontal” high-speed rail network from Baotou (Yinchuan) to Haikou in the planning of the national medium and long-term rail network, Yinxi high-speed rail has a total length of 618 kilometers, including Yinchuan, Wuzhong, Hui’anbao, Qingyang and Xi’an North. Pending 18 stations, 13 pairs of EMU trains will be organized from Yinchuan to the north of Xi’an. Once the operation transition period ends on January 20 next year, 27 pairs of daily EMU trains will be organized.
“You must feel it this time!” Lu Wenqing of Changqing Oilfield Third Oil Supply Station was a bit excited when he heard the news of the opening of the high-speed train. Lu Wenqing, who works in Huianbao, Ningxia, has been caught in traffic for a long time. For more than ten years, when he returned home to Xi’an, he had to take a bus to walk the mountain road, which was bumpy for almost 9 hours.
For a long time, due to the great distance between Yinchuan and some of the surrounding regional central cities, the eastern and southern regions have terrain barriers, and the economy and population are limited, Ningxia has not built high-speed railways or opened high speed trains. The national rail infrastructure is weak, making staff communication and economic development extremely difficult.
Now that the Yinxi high-speed train is open, Lu Wenqing is much more convenient, and he can return home to Xi’an in 3 hours. “My husband works at the oil plant in Qingyang, Gansu. Now, I can meet him in half an hour on a high-speed train.” Almost 70,000 employees and their families live in Yinchuan because the headquarters are in Xi’an. A large number of employees traveled between Yinchuan and Xi’an, and the opening of the Yinxi high-speed railway largely solved their traffic problems.
Wang Dalin, chief dispatcher of China Railway Lanzhou Bureau Group Corporation, said that the Yinchuan high-speed railway connects the Guantian economic zone, the Longdong area and the urban belt along the Yellow River. Through the center of Xi’an, it has largely solved the problem of fast transportation and transportation quality in southern Yinchuan. Promote the circulation of resources such as personnel and goods, and solve the problem of interprovincial communication.
Ballasted over loess, the tunnels lead to the plateau
Yinchuan and Xi’an clash through loess. The high-speed railway construction runs along the edge of the Mu Us desert and runs through the largest plateau area of the Loess Plateau in the world – Dong Zhiyuan. The geological conditions along the line are extremely complicated. Getting through the loess smoothly has become the biggest building difficulty.
In the special natural environment of the northwest, the “ballasted” construction method was proposed. The so-called ballasted track refers to the use of gravel as a track bed in the roadbed, this track has the advantages of good impact resistance, elasticity and good drainage. After arduous exploration and practice, the builders have made significant contributions to the summary of construction standards and the technical system of the ballasted high-speed train.
It is not only technological advances, but behind the opening of the high-speed train is the sweat and effort of countless railwaymen.
In June 2019, the track laying of the Wuzhong South Bridge was completed and the Ganning section of the Yinxi high-speed railway was connected to the Yinwu section. At the same time, the Shaanxi section is also under construction and road paving is nearing completion. The 543-kilometer railway, all sections of the project went smoothly, but the neck got stuck in the middle.
The Shanggecun Tunnel was the first problem encountered when the high-speed train left Ningxia. This 6.78 kilometer long tunnel is located in the Dongzhiyuan area of Qingyang City, Gansu, the central section of the railway, which has the thickest layer of loess in the world. According to Zhu Jun, senior engineer at the China Railway First Design and Survey Institute, the loess in this area has a water content of up to 33%. During the construction process, the water will crack and deform, and the stress will be extremely complex. It is a world class engineering problem.
Faced with the extremely high construction difficulty, the design unit, construction unit, etc., together with relevant national experts, jointly addressed the construction problems, repeatedly demonstrated and finally decided to adopt a combination of “solid” and “drainage “to treat soft plastic loess.
“Solid” refers to the grouting and reinforcement of related road sections, and “drainage” refers to the use of surface lift wells for dewatering to ensure that the cofferdam is not affected by groundwater. Yu Jie, head of tunnel design at the China Institute of Railway Studies and Design, said, “This method can reduce the moisture content of the soil to 22% and ensure the safety of construction.”
After fighting day and night, on June 27, 2020, the Shangge Village Tunnel was successfully penetrated. As the person in charge of the tunnel design, Yu Jie has gone through 7 years from the inspection project to the completion of the tunnel, and her son is also 7 years old this year. “Looking at the tunnel from the drawing to the entity, this tunnel is equivalent to my other son in my heart.”
High-speed rail becomes an artery, a rapid industrial upgrade
“Now that the high-speed train station is fixed at the gate, it is more convenient to do business across the country.” Liu Xiaohong, the non-genetic heir to Eight Treasure Tea who lives in Wuzhong, often goes to other places to promote Ningxia’s specialty products, and each time he brings a hundred kilograms of raw materials, tea sets and other items. With the opening of the Yinxi high-speed train, Liu Xiaohong can reach Xi’an in 3 hours, which saves a lot of time and luggage costs.
The completion of the high-speed rail has not only accelerated the flow of people in the northwest region, but has also provided good opportunities for rapid logistics development, helping the industry to accelerate and improve.
Yanchi County, where the high-speed rail ran, was once a poor county on the state level. Since alleviating poverty, Yanchi has vigorously developed aquaculture. In 2019, the per capita disposable income of local farmers was 12,127 yuan, of which more than half came from the Tan sheep industry. “With the opening of the high-speed train, Tan sheep in my hometown they will definitely sell better, “said Jin Jianren, president of the Yanchi County Tan Goat Association, happily.
With the completion of Yinxi high-speed railway, Yanchi is actively preparing for fresh meat outbound transportation with rapid logistics and industrial modernization design. “The added value of fresh meat is higher, farmers’ income has increased, and the golden sign of lamb Yanchi has become more stable!” Jin Jianren said. The opening of the line eased the pressure on freight transport by rail. In addition to the Yanchi lamb, more and more local specialties can travel across the country by train.
While recognizing the enormous development opportunities provided by the opening of the high-speed rail, the local area is also thinking about how to use the radiation effect formed by the high-speed rail network to accelerate the optimal allocation of various resources. Ma Jian, undersecretary of Ningxia Development and Reform Commission, said that Yinchuan is rich in tourism resources, land resources and energy resources, and has great appeal. “I think more funds and staff will come to Ningxia in the future.”
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