Fighting for 14 years, crossing the Hengduan Mountains!This railway is opened today

July 22

Belong to China China Railway

China Railway Second Hospital is responsible for survey and design throughout the board

China Railway 1 Bureau, Five Bureau, Eighth Bureau, Bridge Bureau, Workers

Eliver involved in construction

Dali to Ruili Railway Dali to Baoshan section

(Here referred to as the Darui Railway Da Bao section)

Open operation

It marks the construction of China -Myanmar International Railway Channel

Obtaining important progress

From the east of the Darui Railway, it starts from Dali City, Yunnan Province, and the west to the border city of China and Myanmar. It is 330 kilometers in length and is divided into two sections. At present, the construction of the Baoshan to Ruili section is being promoted in an orderly manner. The Daobao section opened this time is 133 kilometers long, connecting Dali City and Baoshan City, with a design speed of 140 kilometers per hour. It is a national I -level single -line electrified railway. Essence

Since the construction of the construction in June 2008, the majority of employees of China Railway China Railway will overcome the difficulty of geological disasters, and scientifically and orderly promote the construction of the project. There are 34 new bridges and 21 tunnels across the board, with a total length of 115.8 kilometers, accounting for about 87%of the line. The builders overcome geological disasters such as slump, mud, and surgery. Tunnels; overcome the influence of the valley horizontal wind, built the Lancang River Special Bridge, and accumulated valuable experiences for the construction of railway tunnels and bridges under complex geological conditions.

Carefully investigate the line selection to draw a magnificent blueprint

The Darui Railway is the first national -level trunk railway that crosses the Hengduan Mountains with extremely complex terrain and geological conditions. The difficulty is evident. The Darui Railway is in the areas where the Indian sector interacts with the Asia -Europe sector is the most intense. The area of ​​the area of ​​the region is strongly lifted into a plateau. At the same time, the "Sanjiang" of the Nujiang, Lancang River, and Jinsha River are moved closer. 21, the geological conditions of the engineering are "three highs", that is, high land thermal, high -ground stress, and high earthquake intensity; The characteristics of the shallow transformation process of the shore slope are one of the most complicated railways at present in domestic terrain.

The mountains and valleys along the Darui Railway Dagua section are deep and strong in structure. The rock body is crushed and loose. The landslide, collapse and mudslides, high -temperature and high -pressure hot water, high -ground stress and other adverse geological problems have prominently controlled the line plan. Therefore, in the process of survey and design, the Darui Railway Investigation and Design Team of the China Railway Second Hospital highlights the principle of geological selection, carefully investigates and reasonably selects the line plan, such as the complexity of the regional geological structure, the breakdown of the activity and the deep breakthrough development of the region, and the lines are exhausted. It may avoid or stay away from activity breaks and deep breaks; when it is impossible to avoid, the line adopts a short -distance and large angle through a break zone. At the same time avoid. Although the Dajiao section is only 133 kilometers, the mileage of more than 3,900 kilometers than the selected line scheme is more than 3900 kilometers. By deepening geological work, repeated research, the most implementable solution for engineering has been selected.

In order to achieve the purpose of environmental protection and disaster prevention and disaster prevention and disaster prevention and mitigation, the Darui Railway line will choose to minimize the exhibition line. On the way, in order to avoid the destruction of the environment during design, combined with the on -site terrain, it makes full use of the existing construction channels, fire pools and other facilities in the horizontal hole of the tunnel to reduce the impact on the environment.

"The most difficult to dig into the tunnel in history"

7 minutes, fought for 14 years

The Dazhu Mountain Tunnel undertaken by the China Railway One Crossing the famous Hengduan Mountains, the maximum buried depth of 995m, crossed 6 broken belts and 5 rock -soluble development areas. The geology is extremely complicated. The tunnel is vividly reflected. The Dazhu Mountain Tunnel is located in Baoshan City, Dali Railway, Dali Railway. It is the most dangerous and most difficult construction railway tunnel in the middle road conditions in Darui Railway. The railway tunnel is described as the "entrance to hell". The total length of the tunnel is 14484 meters. It started construction in June 2008 and ended in 12 years.

Dazhu Mountain Tunnel Import

Since the construction of the tunnel in August 2008, the tunnel has "dealt with" with water, with a maximum single -day water output of 210,000 cubic meters and an average amount of water output of 76,000 cubic meters/day. According to statistics, the water output reaches 10 West Lakes. Water volume, the drainage pipes installed in the tunnel are about 56 kilometers; if the water is not pumped for 1 hour, the tunnel will be drowned for 322 meters. For workers in the Dazhu Mountain Tunnel, water is the biggest problem, and workers work in the water all year round.

In addition to "water depth", there is also "hot". The middle section of the tunnel is nearly 6km in length. It is at the high -ground thermal floor. The maximum temperature reaches 48 ° C, the average temperature reaches 41 ° C, and the operating environment is extremely harsh. The inside of the cave is hot and cold outside the cave. Workers often catch a cold and get sick.

The high land thermal heat of the Dazhu Mountain Tunnel reaches 41 degrees the construction environment, and the workers rotate the operation.

Since the construction of the Dazhu Mountain Tunnel in August 2008, in more than 5,000 days and nights, the builders of the China Railway Bureau have carried forward the spirit of "integrity and innovation, first -class", and carry forward the "responsibility, responsibility, blood, and persistence". The spirit of Zhu Shan has not forgotten his original intention and keeping in mind the mission. In these 14 years, he has achieved many achievements, and has won more than 20 national, provincial and ministerial patents, scientific research and QC results, and has accumulated valuable construction experience for the construction of similar tunnels.

Shanling Tunnel Digging into Asia Records

In addition to the Dazhu Mountain Tunnel, there are 4 special tunnels with a length of greater than 10 kilometers in Darui Railway, and there are 4 special tunnels, which are 17,623 meters of Xiuling Tunnel, 14,665 meters of Dapo Ling Tunnel, and 13,390 meters of Shanyang Tunnel. The difficulty of the project is difficult in the tunnel, because the horizontal mountains are moving north and south, and the Darui Railway is the east -west direction, so most of the lines of the line need to cross the reckless mountains, such as the actual unique construction of the Xiuling Tunnel imported construction area undertaken by the Eighth Bureau of China Railway. 10 kilometers, setting a record of the Shanling Tunnel into the Asian record.

Darui Railway Xiuling Tunnel is connected to

The Xiuling Tunnel is an important control project of the Darui Railway Da Bao section and the longest tunnel across the board. The whole tunnel geology is mainly the weak surrounding rock of the "red floors of the western Yunnan", with a maximum buried depth of 1115 meters, crossing 7 broken belts, IV and V -class surrounding rocks accounted for more than 90%. Bad geology such as highland temperature exists for a long time. Large -scale landslides have occurred 97 times during construction, 73 sections of soft rocks, 3 times, and countless slumps and deformations, which are very difficult.

Hope of the Darui Railway Xiuling Tunnel Import

In the specific construction, in the face of the Xiuling Tunnel, the Darui Railway Survey and Design Team of the China Railway Second Hospital carried out targeted design for high ground temperature and ultra -long tunnel ventilation. Because the Xiuling Tunnel is restricted by terrain, it does not have the conditions to open up horizontal, oblique, and vertical shafts, and cannot achieve "long tunnel shorts". On the day of the penetration, the length of the Xiuling Tunnel's imported tunnel was 9677 meters and the length of the front cave was as high as 10070 meters.

The import of Ping Gua in the Import of the Draui Railway Shi Ling Tunnel continues to excavate

The Dixian Tunnel is excavated for 10 kilometers long. Due to terrain restrictions, the horizontal cave and diagonal well cannot be increased. In order to solve the needs of the operation, the China Railway Eighth Bureau and China Railway Second Hospital adopted a large -cycle model of "flat guidance and positive cave". The tunnel has 55 kilometers of rail transportation routes and more than 5,200 tons of rails. The daily vehicle transportation distance is more than 4,800 kilometers. It is the longest tunnel of the Asian rail transportation.

Darui Railway Tunnel Palm Polyzon

In the process of construction, in the face of abnormal conditions such as collapse, deformation, and mud water that may occur at any time, according to the characteristics of surrounding rocks, the China Railway Eighth Bureau innovatively used the cantilever excavation engineering method to improve the construction efficiency by more than 40%. Since the start of the tunnel, more than 100 research research has been carried out, and 2 national patents, 3 provincial and ministerial scientific research results, and 41 enterprise -level scientific research achievements have been obtained, which has accumulated valuable experience for the construction of the special difficulties in my country.

Create three "world first"

The Lancang River is one of the famous "Qijiang" in the Hengduan Mountains. It is a representative project of the Da Bao section. The Lancang River Special Bridge undertaken by the China Railway Bridge is 528 meters in length, and the main cross is 342 meters. In addition, the bridge is located in the deep V -type canyon area. There are landslides in the range of less than 100 meters on both sides. There are some locations of 90 degrees vertical hillside, and the mountains on both sides are asymmetric. They can only use more complex steel bars. Concrete basket design.

The bridge is a high -end -type skeleton reinforced concrete basket arch bridge. The main arch uses steel pipe arch filling and outsourcing concrete structure. A total of 85,000 cubic meters of concrete and 14,000 tons of steel are used. The bridge is located at the canyon area and the wind. There are landslides near the upstream and downstream of the bridge. The traffic is inconvenient in four weeks. October to May each year is the wind season. The frequent bruises are not conducive to the transportation of large components. All the structures of the entire bridge are small rods entering, and then on -site combination, which greatly increases construction difficulties.

Due to the special geographical environment and climate, the Lancang River Special Bridge is constructed by the "second vertical" construction method. It is the first time in the history of the world's bridge. The largest vertical weight of the world's largest bridge is 2,500 tons, which is also the best in the construction of the world bridge. During the construction of the bridge, three national technological innovation patents have been obtained, which has accumulated valuable experience for bridge construction under the accumulation of complex geological conditions in my country.

Enter the "City Club Living Room"

The beautiful blooming of the new station

Three new passenger stations Fangbao Shan Station, Yangyu Station, Yongping County Station and Freight Station Baoshan North Station along the Darui Railway Da Bao section are undertaken by China Railway. Among them, the construction area of ​​the Baoshan Station station building is 12,000 square meters.

Baoshan Station: Modern civilization and history are intertwined here

Baoshan was formerly known as Yongchang City and was rich in tribute Gozi (called Yongzi). It has a history of more than 500 years. The roof, facade, and pillars built by the Drai Railway Station, which are built by China Railway, fully draw on Yongzi Gongqi culture and the elements of the Han and Tang dynasties. Located between heaven and earth, playing with heaven and earth shows the Han and Tang buildings. The characteristics of the solemn, atmospheric, and powerful architecture of Han and Tang Dynasties show the unique and bright "Yongzi" culture of Baoshan.

Baoshan has a long and bright historical culture, and the urban landscape is beautiful. The "Yongzi" chess piece of Baoshan is as strong as jade, delicate as jade, touching the heart, warm and cool in winter, and timeless charm. With the opening of the Darui Railway Da Bao section, Baoshan Station is like "Yongzi", and it connects Dali to Ruili's new way.

Yongping County Station: Witness the previous life of Bonan Ancient Road

The third -stage roof of Yongping County Station, the base on both sides of the facade, and the pillars in the middle part reflect the solemn and atmospheric characteristics of the Han and Tang dynasties, symbolize the prosperity of Yongping. Historical and cultural elements.

It is understood that the "Southern Silk Road" Bonan Ancient Road is more than 100 kilometers in Yongping County, which is a relatively intact section. Located in Yonghong Bridge in Yongping County, it spans the Lancang River, and it is one of the earliest iron cable bridges in my country.

Yangyu Station: Starting towards the ecological Yiju in the green mountains and green water

Dali Yangyi Yi Autonomous County Yi people mostly adopt Shuangpo roofs, and the roofs of Yangyu Station are in the form of double slope to show the ecological livable characteristics of the county building. The neutral complexion uses red, yellow, and black with the characteristics of Yi architecture, and local wood grain grille shows the symbol of the Yi nationality.

The mountains and rivers of Yangyi Yi Autonomous County are beautiful, beautiful, and pleasant climate. They are famous for their high -quality large bubble walnuts. Three thousand years ago, walnuts were held every year. With the opening of the Darui Railway Da Bao section, the walnuts here will be more convenient to sell them all over the country along the steel arteries.

Come on against time, lay the iron army

The China Railway Five Bureau undertake construction tasks such as the prefabrication of the 460 -porous T beams on the entire 460 -porous T beam on the entire line of Darui Railway, and the entire line of 328.69 kilometers. Affected by the construction of the growing tunnel, the project department dynamically adjusted the laying group, and set up the three bridge prefabricated fields of Yongping, Weishan, and Baoshan in sections to optimize the construction of long -distance mechanical paving into segments into segments. The robot manually synchronizes and parallel construction, and it is transformed into zero and segmented breakthroughs, and the public iron dual -use bridge machines and advanced and high -efficiency paving work equipment are put into the paving work. schedule.

The Darui Railway cross the geological activity break zone. The mountains along the line are dangerous, the bridge and tunnel are connected, the operation of the beams of the beam is high, and the construction is difficult. In response to the working conditions of the tunnel entrance, the project department used the temporary rail arrangement to reduce the height of the rail, overcoming the problem of narrow work space of the tunnel entrance and insufficient operation height, and finally ensured the bridge stand safely and smoothly. On January 25, 2022, the Darui Railway Da Bao section across the line.

14 years of persistence, the original intention will not be changed

In the import work site of the Dapo Ridge Tunnel in China Railway Eighth Bureau, Yao Wei, the deputy manager born in 1987, has taken here as the second home since he came to the Darui Railway in 2009. As a model representative of the 80s in the project, Yao Wei took a step by step from a trainee to the position of the deputy manager.

"Daren is my second hometown. There are my youth and sweat I sprinkled here. This experience will definitely occupy an important position in my life." During the 12 years of the Darui Railway, Yao Wei Completed love, getting married, having children ... In February 2010, Yao Wei married his beloved wife at the collective wedding of the project department. Now he is the father of two children. ""

"Perseverance" is a word mentioned most of the members of the Darui Railway Survey and Design Team of the China Railway Second Hospital. When you transfer to the project, come to the project at a high speed. Duan Yanping, the person in charge of the geological professional, is an employee of the China Railway Second Hospital in the Darui Railway Project. Now her daughter is also fighting on the Darui Railway and wrote a good story of "a Darui line, two generations of railways".

Persist in Darui and give up. In the eyes of the Chinese Railway Ginseng employees, Drai is like their children. From scratch, watch it falling to the ground, watch it waiting in the puppet, watch it changes from the blueprint to reality, watch the "Fuxing" green The giant went back on the rails and watched the local people beside Yangyu Station and Baoshan Station happily visited, full of eager eyes, "All of this is worth it!"

The regional status of the Darui Railway Dajiao section is important

Passing through the Bai, Dai people and other ethnic minorities areas

The original ecological tourism resources along the line are rich

Its built -in traffic

The history of the railway is not connected to the railway in Baoshan and other places

It will further improve the structure of the western frontier railway network

Great convenience along the people along the line travels and cargo transportation

Accelerate the development of tourism resources in western Yunnan

Promote national unity and rural revitalization

It is very important

In the future, after the entire line of Darui Railway

China -Myanmar International Railway Channel

China's territory will be fully completed

Da Bao section service "Belt and Road"

The channel function of the China -Myanmar Economic Corridor Construction

It will be further prominent

Editor -in -chief 丨 Li Yuan, Shen Su

Editor -in -chief 丨 Shao Jun, Xu Huimin

Content sources 丨 China Railway Second Hospital, China Railway No. 1 Bureau, China Railway 5 Bureau, China Railway Eighth Bureau, China Railway Bridge Bureau, China Railway Construction Industry, etc.

China China Railway Finance Media Center

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