Praise the Qinghai-Tibet Railway Builder

Zhu Yixuan Zuo Zuo

The excavation of the Qinghai-Tibet Railway is a miracle. Every year, 500,000 people come to Lhasa by train. This miracle is the architect's hard work and wisdom to complete this vast project, which also makes tourists a lot easier.

The Qinghai-Tibet Railway has a total length of 1,142 kilometers. There are 10 tunnels and 675 bridges along the road. It crosses the Qinghai-Tibet Plateau, the world's most harsh natural environment. It is very high and extremely cold. The thin air is likely to kill people. These frozen soils are very unstable. The whole world believes that it is impossible to build railways in the world's highest plateau. This is not the longest railway, but there is no doubt that the construction is the most difficult. It is an architectural wonder, how does China accomplish this architectural wonder? It depends on the intelligent and intelligent builders.

In the face of repeated difficulties, the road to build a strong army is high. To pass through the permafrost zone, the permafrost is hard and hard in the winter, and it is extremely soft in the summer. A quarter of the land in the Northern Hemisphere is covered by permafrost, and permafrost is sometimes more than 1,500 meters thick. It is rock-solid in the winter, but it melts and settles in the summer. When it comes again in winter, it freezes again, the volume will increase, and the ground will rise. The railway built in such unstable areas will undoubtedly be deformed. But the builders did not fear the hardships and used their own wisdom to defeat this only "blocking the road."

The miracle of the Qinghai-Tibet Railway has solidified the hard work of the builders and the wisdom of the wisdom. They have not dared to work hard, persist and persist, and have completed this vast project. We want to thank these builders for the miracle they built.

Fifth grade: Zhu Yixuan