What is the altitude of Nagqu Railway Station?

Question 1: What is the altitude of Nagqu County? I checked online for a long time, ranging from 1500 to 6500. I really can't be sure about the altitude of Nagqu County, such as Nagqu Station. Nagqu County belongs to the Northern Tibetan Plateau, and the average altitude of the entire county is about 4,500 meters. There are many mountains in the territory, but the slope is relatively gentle. Most of the mountains are in the shape of ***, and it belongs to the plateau and hilly terrain. Within the territory are plateau glacier-type snow-capped mountains that are covered with snow all year round and are inaccessible to people. The mountains are steep. The territory mainly includes the Sangdenkangsang Mountains in the southwest, the Namurea Mountains in the northwest, the Gonggawagama Mountains in the southeast, and the Seru Mountains and Kerea Mountains in the east. These peaks are all branch mountains or remnants of Nyenqentanglha Mountain Works. The highest peak in the territory is Sangdeng Kangsang Peak, with an altitude of about 6,500 meters. The main peak is 100 kilometers south of Nagqu Town. Gonggawa Peak, Laopu Gacheng Peak, Serulagan Peak, etc. are also snow-covered peaks all year round, with altitudes above 5,500 meters. Nagqu County is about 4,510 meters above sea level. Naqu Station is about 4520 meters above sea level.

Question 2: Has anyone been to Nagqu? Can you tell us about the train station? Nagqu Railway Station is the transfer station and supply station of the Qinghai-Tibet Railway. It is the highest railway station in the world. It is 322 kilometers away from *** Station and 820 kilometers away from Golmud Station on the Qinghai-Tibet Railway. The rich tourism resources within the territory also make it easy to visit in a short time.

Question 3: Trigonometric function question 1 y=cosβ=cos(α+β-α)

=cos(α+β)cosα+sin(α+β)sinα < /p>

Because α is an acute angle, so cosα=√(1-x2),

Because α and β are acute angles, so α+β∈(0,π), sin(α+ β)=4/5

So y=(-3/5)√(1-x2)+(4/5)x.

Because cos(α+β)=-3/53/5.

Therefore, the value range of It is the highest railway station in the world, and its rich tourism resources make it easy to visit in a short time. The train station is located in Omadige Village, Mendi Township, about two kilometers west of Nagqu, close to the Qinghai-Tibet Highway. The awning shape at the main entrance of the station reflects the image of the yurts and snow-capped mountains in the Qiangtang area.

Nagqu Railway Station consists of the station complex building, freight warehouse and other parts, with a total construction area of ??7412 square meters, of which the comprehensive building area is 2540 square meters.

*** Railway Station

*** The Railway Station is the largest station on the Qinghai-Tibet Railway and one of the landmark projects of the Qinghai-Tibet Railway. *** Railway Station is located in Liuwu Township, Doilungdeqen County, *** City, echoing the Potala Palace. It is more than 3,600 meters above sea level. It is the terminal station of the Qinghai-Tibet Railway and the largest comprehensive passenger and cargo transportation station on the entire line.

The main building of the station has one underground floor and two floors above ground. The first floor above ground is waiting room 1, and the second floor is waiting rooms 2 and 3 and a medical room equipped with oxygen supply facilities. *** The station has 8 sets of tracks and 6 waiting platforms. The lobby and waiting room are decorated with Tibetan patterns such as lotuses and Pisces, and dozens of LCD TVs are hung. The LCD screen in the lobby is 6 square meters in size.

In order to alleviate passengers' symptoms of hypoxia, fatigue and other symptoms, *** the railway station will try to shorten the distance for passengers to enter and exit the station, and elevators will be set up in the station. At the same time, in order to protect the surrounding environment, the station will try to use local abundant, pollution-free solar energy as heating material.

*** The daily passenger throughput of the railway station can reach 2,700 people.

Amdo Railway Station

Amdo Railway Station is the largest passenger and cargo station of the Qinghai-Tibet Railway in ***. It is located in Andu, Nagqu Prefecture, *** at an altitude of 4,700 meters. In the southern part of Duo County, it has a total length of 1,601 meters and covers an area of ??140,000 square meters. The first track-laying ceremony of the Qinghai-Tibet Railway *** was held at the Amdo Railway Station.

Tanggula Railway Station

Tanggula Railway Station, with an altitude of 5067.88 meters, is the highest station in the world.

The main structural system of the station is a cast-in-place concrete frame structure with a reasonable service life of 50 years. The design of the Tanggula Station Comprehensive Building incorporates the local ethnic architectural style. It is designed with a solar battery room, a power distribution room, a communication machinery room, a signal room, a control room, an exhibition hall, etc.

Chayu County Railway Station

The nearest railway station in Chayu County - *** Railway Station

*** Railway Station is located in Duilongdeqing County, *** City Liuwu Township is the largest station on the Qinghai-Tibet Railway and one of the landmark projects of the Qinghai-Tibet Railway. *** Railway Station is located on the south bank of *** River, with a construction area of ??more than 22,000 square meters. Looking around, in the middle of a huge mountain, Drepung Monastery, one of the three most famous temples in the world, is looming. Looking to the west, you can see the majestic Potala Palace in the distance.

The building of the train station is mainly red, white and yellow in color and adopts the Potala Palace-style architectural style with narrow windows and sloping main bodies. The overhead dome is written with "*" in Chinese and Tibetan. **Station" has golden characters. The main body of the building has five floors, with two wings spread out to the east and west sides, stretching for hundreds of meters, with mountains on its back and water on its side. It is really spectacular.

The train station is divided into three floors, one underground and two above ground. There is a medical room inside the train station and oxygen supply facilities are also provided. Due to the high altitude and lack of oxygen, *** focused on functional design and focused on "people-oriented". In order to minimize the physical exertion of passengers walking around, escalators are set up in the station, and local abundant, non-polluting solar energy is used as heating material.

*** The main supporting projects of the railway station include the bus terminal, hub platform, bus platform, and a long-distance bus station, which have been completed and put into use. Through these bus stations and long-distance passenger stations, the train station's capacity to send passengers will reach 5,000 people every day, which is enough to ensure that passengers are diverted to various areas in *** city and district in a timely manner.

Nowadays, materials in the Linzhi area are loaded at *** West Station.

Address: Liuwu Township, Doilungdeqen County, *** City

Bomi Bus Station

The nearest train station in Bomi County - *** Railway Station, *** Railway Station is located in Liuwu Township, Doilungdeqen County, *** City. It is the largest station on the Qinghai-Tibet Railway and one of the landmark projects of the Qinghai-Tibet Railway. *** Railway Station is located on the south bank of *** River, with a construction area of ??more than 22,000 square meters. Looking around, in the middle of a huge mountain, Drepung Monastery, one of the three most famous temples in the world, is looming. Looking to the west, you can see the majestic Potala Palace in the distance.

The train station is built in red, white and yellow as the main colors, and adopts a Potala Palace-style architecture with narrow windows and sloping main bodies... >>

Question 5: China’s Qinghai-Tibet Railway has finally opened. How many “world’s best” achievements has it achieved in one fell swoop? The nine best in the world

1: The longest plateau railway in the world. The Golmud to *** section of the Qinghai-Tibet Railway passes through the Gobi desert, swamp wetlands and snow-capped mountains and grasslands, with a total mileage of 1,142 kilometers.

2: The world’s highest plateau railway. The Qinghai-Tibet Railway runs for 960 kilometers through sections above 4,000 meters above sea level. The highest point is the Tanggula Mountain Pass at an altitude of 5,072 meters. It is known as the "railway closest to the sky."

3: The longest mileage through frozen soil. The Qinghai-Tibet Railway passes through permafrost areas for 550 kilometers.

4: Set the highest speed on the plateau railway. The train's speed will reach 100 kilometers per hour on frozen soil sections and 120 kilometers per hour on non-frozen soil sections.

5 and 6: The tallest and longest plateau frozen soil tunnel. The Fenghuoshan Tunnel, the world's highest tunnel, is located on Fenghuoshan at an altitude of 5,010 meters. It has a total length of 1,338 meters and a rail surface elevation of 4,905 meters. It is entirely located in the permanent plateau permafrost layer. The world's longest plateau frozen soil tunnel is the Kunlun Mountain Tunnel with a total length of 1,686 meters.

7: The railway station with the highest altitude. The Tanggula Station of the Qinghai-Tibet Railway is located in the hinterland of the Qinghai-Tibet Plateau, with an altitude of 5,068 meters.

8: The longest plateau frozen soil railway bridge. With an altitude of more than 4,600 meters and a total length of 11.7 kilometers, the Qingshui River Bridge, known as the longest bridge on the Qinghai-Tibet Railway, flies under the Kunlun Snow Mountain.

9: The highest railway laying base.

In the northern part of Amdo County, Nagqu Prefecture, there is a Qinghai-Tibet Railway laying base covering an area of ??more than 8,000 square meters and an altitude of 4,704 meters - the Ando laying base.

Question 6: *** How many kilometers is the total length of the Qinghai-Tibet Railway? The total length of the Qinghai-Tibet Railway is 1956 kilometers

Introduction to the Qinghai-Tibet Railway

The total length of the Qinghai-Tibet Railway is 1956 kilometers, with 960 Kilometers of altitude are above 4,000 meters, of which 550 kilometers pass through the perennial frozen plateau zone. Its highest point is located at the Tanggula Mountain Pass, which is 5,072 meters above sea level and is snow-capped all year round. It is known as "the railway closest to the sky" and "the highest railway in the world". The construction of the Qinghai-Tibet Railway is a major strategic decision made by the Party Central Committee and the State Council at the beginning of the new century. It is one of the four national landmark projects in the "10th Five-Year Plan" and the first key project in the development of the western region.

The Qinghai-Tibet Railway starts from Xining City, Qinghai Province in the north, and ends at *** City, *** Autonomous Region, in the south, with a total length of approximately 1,956 kilometers, of which approximately 846 kilometers from Xining to Golmud was completed in 1984. The Golmud to *** section of the Qinghai-Tibet Railway, which is about to be built, will lead from the railway station of Golmud City, an important town in western Qinghai Province. After passing the Nanshan Pass, it will go to the hinterland of the Qinghai-Tibet Plateau, passing through Nachitai, Wudaoliang, Tuotuo River, Yanshiping, and over Tanggula Mountain enters the *** Autonomous Region, and then passes through Anduo, Nagqu, Damxiong, and Yangbajing to *** City, the capital of the *** Autonomous Region. The route is basically parallel to the Qinghai-Tibet Highway. The Qinghai-Tibet Railway passes through nature reserves such as Hoh Xil, Sanjiangyuan, and Qiangtang. It is also known as China's first "environmentally friendly railway" because of its unique environmentally friendly design and construction.

The Qinghai-Tibet Railway is the highest and longest plateau railway in the world today. The line passes through 960 kilometers of areas with an altitude above 4,000 meters. The highest point of the line over the Tanggula Mountain reaches 5,072 meters. It passes through 550 kilometers of continuous frozen soil for many years and 216 kilometers of the ninth-degree earthquake intensity zone. Along the route, there are high temperatures and anoxia, a fragile ecological environment, and active crustal movement. Building railways in such an area is highly exploratory and scientific, and the construction task is arduous. The Fenghuoshan Tunnel is the highest railway tunnel in the world; the Kunlun Mountain Tunnel, located at an altitude of 4,767 meters, has a total length of 1,686 meters and is known as the longest "frozen soil tunnel" in the world.

The construction of the Qinghai-Tibet Railway will end the history of no railways in the *** autonomous region, further improve the transportation conditions and investment environment on the Qinghai-Tibet Plateau, and promote *** resource development and rapid economic development. It will play an important role in strengthening the connection between the mainland and Taiwan, promoting cultural exchanges between Tibetans and other ethnic groups, enhancing ethnic unity, and benefiting people along the route.

The best of the Qinghai-Tibet Railway

01 The highest altitude railway in the world - the Qinghai-Tibet Railway. The Qinghai-Tibet Railway starts from Xining City, Qinghai Province, and ends at *** City, the capital of the *** Autonomous Region, with a total length of 1,956 kilometers.

02 The world’s highest plateau frozen soil tunnel - Fenghuoshan Tunnel. The Fenghuoshan Tunnel is located on Fenghuoshan at an altitude of 5,010 meters. It has a total length of 1,338 meters and a track elevation of 4,905 meters. It is entirely located in the permanent plateau permafrost. It is currently the highest plateau in the world and the longest across the permafrost area. The permafrost tunnel is known as the "highest tunnel in the world".

03 The longest plateau frozen soil tunnel in the world - Kunlun Mountain Tunnel. The entrance of the Kunlun Mountain Tunnel reaches an altitude of 4,648 meters. It snows here in June, and there are four seasons in one day. The oxygen content is only half of that in the inland plains, and the lowest temperature reaches more than minus 30 degrees Celsius.

04 The highest railway station in the world - Tanggula Station. Tanggula Station is located in the permafrost area of ??the Tanggula Mountain Pass at an altitude of 5,068 meters, covering an area of ??approximately 77,000 square meters.

05 The world’s highest plateau railway laying base - Qinghai-Tibet Railway Amdo laying base. The first stop of the Qinghai-Tibet Railway from Tanggula Mountain to *** is the Qinghai-Tibet Railway Anduo Laying Base located at an altitude of 4,705 meters.

06 The longest "bridge instead of road" project on the Qinghai-Tibet Railway - the Qingshui River Bridge. The Qingshui River Bridge is erected in the core area of ??the Hoh Xil National Nature Reserve with an average altitude of more than 4,600 meters. It is 11.7 kilometers long. It is the longest "bridge instead of road" bridge on the Qinghai-Tibet Railway and the longest bridge on the Gela section of the Qinghai-Tibet Railway. Key control projects of construction.

07 The highest bridge on the Qinghai-Tibet Railway - Sancha River Bridge. The Sancha River Bridge is located in an alpine valley at an altitude of more than 3,800 meters, with a total length of 690.19 meters, and the bridge deck is 54.1 meters from the valley bottom. It has 20 piers, 17 of which are circular thin-walled hollow piers. The thinnest part of the top wall of the pier body is only 30 cm.

08 The first railway bridge at the source of the Yangtze River - the Yangtze River Source Grand Bridge. The Yangtze River Source Bridge is 1,389.6 meters long, has 42 holes at its core, and spans a wide river bed of about 1,300 meters. The Tuotuo River Basin where the bridge is located is a large river melting zone in the hinterland of the permafrost area of ??the Qinghai-Tibet Plateau, and has the dual characteristics of both frozen soil and melting zone. ......>>

Question 7: *** The first stop in the ranking of scenic spots along the way to Golmud? Mount Yuzhu

The first viewing station on the Gela Line

Site altitude: 4159 meters

Travel tip: There is no accommodation nearby.

Site landscape: Looking east to the Yuzhu Peak and west to the Hoh Xil

Yuzhu Peak is not far from Golmud, but the altitude soared from more than 2800 meters to 4159 meters, and the temperature dropped sharply from 23 degrees Celsius. At 2 degrees Celsius, the weather suddenly changes from sunny to rainy and snowy. No wonder Mongolian calls Mount Yuzhu "the beautiful and dangerous girl".

This is designated as the first viewing station on the Gela Line, with a special viewing platform. There are 4 turnouts and two platforms, one main and one other. Outside the platform is an endless stretch of deserted beach. Although the station site is not large, it is located facing the snow-capped mountains.

From this station to the east you can see the famous Yuzhu Peak of Kunlun Mountain, which is the first choice base for mountaineering adventures. Looking to the southwest is Hoh Xil, one of the largest "no man's lands" in my country, with an average altitude of more than 4,500 meters.

Cocosili Mongolian means "beautiful girl". The natural landscape of the Hoh Xil area is unique, with criss-crossing rivers and dotted lakes, of which there are more than 100 lakes over 1 square kilometer. Snowy mountains, canyons, stone forests, blooming "salt flowers" beside salt lakes, and boiling springs steaming under glaciers organically form a unique snowy landscape. Hoh Xil is known as the "Kingdom of Animals" on the Qinghai-Tibet Plateau. Rare plateau wild animals such as Tibetan antelopes

Sheep, wild yaks, Tibetan wild donkeys, Tibetan gazelles, snow leopards, and brown bears live here. Golden eagles, black-necked cranes, whooper swans and other birds fly under the blue sky and white clouds. There are fish species such as the naked-bellied fish swimming in the lake. These are species endemic to the Qinghai-Tibet Plateau

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Stop 2? Chumar River

Tibetan Antelope Migration Channel

Site altitude: 4495 meters

Travel Tips: None nearby Place of food and lodging.

The Chumar River Station is located in the core area of ??the east-west migration channel of Tibetan antelopes in the Kunlun Mountains. From the Chumar River Station, you can see the Chumar River, the northern source of the Yangtze River, and the Chumar River, which was built specifically for the migration of Tibetan antelopes. The Er River Bridge is 2,565 meters long. Its 78 bridge holes allow Tibetan antelopes and other wild animals to pass freely. It is a key control project of the Qinghai-Tibet Railway. Both sides of the Chumar River are the main habitat for Tibetan antelopes. Habitats and migration pathways. Every year in June, July and August, groups of Tibetan antelopes who are about to give birth can be seen traveling long distances from the east of the Kunlun Mountains to the west, entering Zhuonai Lake, Hoh Xil Lake, Sun Lake and other places in the hinterland of Hoh Xil. .

In addition, if you are lucky, you can also see small groups of Tibetan antelopes, wild donkeys, wild yaks, white-lipped deer, wolves and other rare animals foraging here. To the north of Chumar River Station, you can see that the Qinghai-Tibet Railway has also built wildlife passages under the Qingshui River Bridge and Wubei Bridge. The Qingshui River Bridge, the longest railway bridge in the world, is 11.7 kilometers long.

To the next section of scenery: Chumar River to Tuotuo River: Tuotuo River - this is the birthplace of the Yangtze River, Yellow River and Lancang River. It is known as the "Chinese Water Tower" and originates from Tanggula The natural landscape at the source of the Yangtze River in Shangladandong is very unique. There are glacial landforms such as ice bamboo shoots, ice bridges, cirques, ice lakes, and ice tongues.

The third stop? Tuotuo River

The source of the Yangtze River shines with silver light

Site altitude: 4547 meters

Travel tips: nearby There are small restaurants and six or seven small hotels in the small town along the Tuotuo River. There is a shortage of electricity and water here.

Surrounding the Tuotuo River are the First Bridge of the Yangtze River, the Yangtze River Source Monument, and the Hoh Xil Conservation Station. The Tuotuo River originates from the southwest side of Gradandong, the main peak of the Tanggula Mountains, and is the source of the Yangtze River. The Yangtze River flows from here, from west to east.

Standing on the observation deck of Tuotuohe Station, you can see the wide Tuotuo River, with its silvery surface shining brightly. There is a 273-meter-long concrete highway bridge over the Tuotuo River, and an oil pipeline from Golmud to *** is laid next to the bridge. Oil Transmission

Directly west of the pipeline is the Tuotuo River Railway Bridge on the Qinghai-Tibet Railway, known as the first bridge over the Yangtze River.

The 4th stop? Buqiange

Meadows, grasslands, snow mountains

Site altitude: 4823 meters

Travel tips: nearby No place for food or lodging.

When you arrive in Butqiang, you can see the beautiful scenery of vertical ecological distribution of plateau meadows, plateau grasslands and ice and snow belts.

From Buqiange to Tanggula, you can see the Tanggula Pass, which is the last scenic spot in the Yangtze River Source Landscape Belt and the highest point of the Qinghai-Tibet Railway. I believe all tourists will get off the train here to take photos.

Stop 5? Tanggula

The highest railway station in the world

Site sea... >>

Question 8 : What are the nine old railways on the Qinghai-Tibet Plateau? The Qinghai-Tibet Railway is the nine largest in the world

The world's best 1: The longest plateau railway

The Qinghai-Tibet Railway is the longest in the world The Plateau Railway is composed of the section from Xining to Golmud and the section from Golmud to ***, with a total length of 1,956 kilometers. The elevation of the Gela section is all above 3,000 meters above sea level, of which 965 kilometers are at an altitude of 4,000 meters. The construction of the Qinghai-Tibet Railway, the highest altitude and longest plateau railway in the world, is also an unprecedented feat in the history of human railway construction.

Best in the World 2: The Highest Plateau Railway

The Qinghai-Tibet Railway runs for 960 kilometers through sections above 4,000 meters above sea level. The highest point is the Tanggula Mountain Pass at an altitude of 5,072 meters. It is known as the "The railway closest to the sky". The plateau construction area is characterized by high temperatures and oxygen deficiency all year round, with a complex and changeable climate. The extreme minimum temperature reaches minus 45 degrees Celsius. There are 115 to 160 days a year with strong winds of level 6 or above. The maximum snow thickness exceeds 40 mm, and the average oxygen content is less than 60% of the mainland, more than half of the area here is a "life restricted area" unfit for human habitation.

Best in the world 3: The longest mileage through frozen soil

The Qinghai-Tibet Railway is the longest plateau railway in the world that passes through frozen soil. The railway has crossed 550 kilometers of continuous frozen soil for many years. . The Qinghai-Tibet Railway can be called the "World Museum of Permafrost Engineering".

World's Best 4: The highest plateau railway speed

After completion, the speed of the frozen soil section of the Qinghai-Tibet Railway will reach 100 kilometers per hour, and the non-frozen soil section will reach 120 kilometers per hour. This is the current train speed The highest speed on the world's high plateau frozen railway.

Top 5 in the world: The Fenghuoshan Tunnel, the tallest and longest plateau frozen soil tunnel, is located on Fenghuoshuo Tunnel at an altitude of 5,010 meters. It has a total length of 1,338 meters and an altitude of 4,905 meters above sea level. It is all located on the permanent plateau frozen soil. Within the soil layer is the plateau permafrost tunnel with the highest altitude and the longest span across the frozen soil area in the world. It is known as the world's tallest tunnel.

The world's top 6: the highest railway station

Tanggula Station is 5068 meters above sea level, about 600 kilometers away from ***. The station is a comprehensive passenger and cargo station. It is the highest intermediate station on the Qinghai-Tibet Railway and the highest railway station in the world.

World's Best 7: The longest plateau frozen soil railway bridge.

The world’s longest plateau frozen soil railway bridge DD is the Qingshui River Bridge on the Qinghai-Tibet Railway with a total length of 11.7 kilometers. It is located in the permafrost section of the plateau, and the thickness of the frozen soil is more than 20 meters.

In order to solve construction problems in plateau permafrost areas and protect nature reserves, experts in the survey and design of the Qinghai-Tibet Railway adopted the measure of replacing roads with bridges. Replacing roads with bridges solves the problem of roadbed stability in plateau tundra.

The world's best 8: the highest railway laying base

In the north of Amdo County, Nagqu Prefecture, there is a Qinghai-Tibet Railway covering an area of ??more than 8,000 square meters and an altitude of 4,704 meters. Railway laying base - Anduo laying base, which is the highest railway laying base in the world.

Top 9 in the world: The railway construction project with the most investment in environmental protection

The construction of the Qinghai-Tibet Railway faces three major challenges: fragile ecology, alpine and hypoxic environment, and permafrost geological structure. World railway construction problems. In order to protect the blue sky, clear lake water and rare wild animals of the plateau, the Qinghai-Tibet Railway has invested more than 2 billion yuan in environmental protection alone, accounting for 8% of the total project investment. It is currently the railway construction project with the largest investment in environmental protection in my country. The Qinghai-Tibet Railway is also one of the railway projects with the highest benefits for migrant workers. The railway department has invested heavily in implementing the three unifications for migrant workers to manage the Qinghai-Tibet Railway: "unified life, unified residence, and unified diet"; Once upon a time, the daily minimum wage for migrant workers was stipulated, and free medical care was implemented for migrant workers.

Question 9: What are the "best in the world" of the Qinghai-Tibet Railway? (Write at least 5) 1. The longest plateau railway: The Qinghai-Tibet Railway is currently the longest plateau railway in the world. The Qinghai-Tibet Railway is composed of the Xining to Golmud section and the Golmud to *** section, with a total length of 1,956 kilometers. The Golmud to *** section of the Qinghai-Tibet Railway passes through the Gobi desert, swamp wetlands and snow-capped mountains and grasslands, with a total mileage of 1,142 kilometers.

2. The plateau railway closest to the sky: The Qinghai-Tibet Railway is not only the longest, but also the highest plateau railway in the world. The Qinghai-Tibet Railway runs for 960 kilometers through sections above 4,000 meters above sea level. The highest point is the Tanggula Mountain Pass at an altitude of 5,072 meters. It is known as the "railway closest to the sky."

3. The fastest plateau railway: The Qinghai-Tibet Railway has created the highest speed of plateau railway in the world. The train's speed will reach 100 kilometers per hour on frozen soil sections and 120 kilometers per hour on non-frozen soil sections.

4. The longest railway crossing permafrost: The Qinghai-Tibet Plateau is the permafrost distribution area with the highest altitude and the largest area in the middle and low latitudes of the world. The permafrost area accounts for 70% of China's permafrost area. Compared with high-latitude frozen soil, permafrost on the Tibetan Plateau has the characteristics of high temperature, thin thickness and strong sensitivity. The Qinghai-Tibet Railway passes through areas where permafrost is most developed. The Qinghai-Tibet Railway is the longest railway in the world that passes through permafrost, with a mileage of 550 kilometers through continuous permafrost areas. The Qinghai-Tibet Railway can be called the "World Museum of Permafrost Engineering".

5． The most difficult plateau railway to build: The construction of the Qinghai-Tibet Railway not only has to cross the Gobi desert, swamp wetlands and snow-capped mountains and grasslands, and overcome the problem of the longest frozen soil layer, but also faces the harsh environment and climatic conditions of the Qinghai-Tibet Plateau. The construction area on the Qinghai-Tibet Plateau is characterized by high temperatures and hypoxia all year round, with a complex and changeable climate. The extreme minimum temperature reaches minus 45 degrees Celsius. There are 115 to 160 days a year with strong winds of level 6 or above. The maximum snow thickness exceeds 40 mm, and the average oxygen content is less than To 60% of the mainland, more than half of the area here is a "life restricted area" unfit for human habitation.

6. The highest plateau permafrost tunnel: The Fenghuoshan Tunnel, the world's tallest tunnel, is located on Fenghuoshan at an altitude of 5,010 meters. It has a total length of 1,338 meters and a rail surface elevation of 4,905 meters. It is all located in the permanent plateau permafrost layer. It is currently the highest plateau permafrost tunnel in the world and the longest across the frozen soil area. It is known as the "world's tallest tunnel".

7. The longest plateau frozen soil tunnel: Near the Kunlun Mountain Pass at an altitude of 4,767 meters, there is the longest plateau frozen soil tunnel in the world. This is the Kunlun Mountain Tunnel with a total length of 1,686 meters.

8. The longest plateau frozen soil railway bridge: In China's largest "no man's land" - the edge of the Hoh Xil National Nature Reserve at an altitude of more than 4,600 meters, a beautiful "rainbow bridge" flies under the Kunlun Snow Mountain. This is its full length The 11.7-kilometer Qingshui River Bridge, known as the longest bridge on the Qinghai-Tibet Railway, is also the longest plateau frozen soil railway bridge in the world.

9. The highest railway paving base: In the north of Amdo County, Nagqu Prefecture, there is a Qinghai-Tibet Railway paving base covering an area of ??more than 8,000 square meters and an altitude of 4,704 meters - the Ando Paving Base.

10. The railway station with the highest altitude: Tanggula Station of the Qinghai-Tibet Railway is located in the hinterland of the Qinghai-Tibet Plateau, with an altitude of 5,068 meters and about 600 kilometers from ***. Tanggula Station is a comprehensive passenger and cargo station. It is the highest intermediate station on the Qinghai-Tibet Railway and the highest railway station in the world.

Question 10: I got off the train at Nagqu Railway Station and went to these three places: Nyenchen Tanglha Mountain, Dolma Canyon, and Qiangtang Grassland. What kind of car can I take to get there? How long does it take to go to Qiangtang Grassland? You will see the nickname of Nagqu area when you arrive at Nagqu Town Huhui. Dolma Canyon takes about 2 hours by chartered car from Nagqu. Nyenqentanglha Mountain is next to the national road from Naqu to ***. You can ask the driver to stop the car on the way