Xiangfan stainless steel observation mark 304 stainless steel settlement observation point U-shaped protective ring settlement observation mark

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　　Xiangfan stainless steel observation mark 304 stainless steel settlement observation point U-shaped protective ring settlement observation mark

　　As the roof of the world, the Himalayas have become a natural barrier between China and Nepal, which many people consider insurmountable. However, why does China insist on building the China Nepal railway, and how difficult is its construction? Is it true that we still need to dig holes in the Himalayas? With the technological accumulation in the field of large-scale tunnels in recent years, China has developed a comprehensive tunnel technology, laying the technical foundation for opening up the roof of the world.

　　Drilling holes in the Himalayas? Why does China insist on building the China Nepal Railway? How difficult is it to build?

　　The picture shows the construction of a high-altitude railway

　　The design of the China Nepal Railway starts from Shigatse, passes through the Jilong Port, and finally reaches the Nepalese capital Kathmandu, with a total length of nearly 540 kilometers. Most of the railway sections need to be connected through tunnels and bridges, especially from the southwestern mountainous areas to Kathmandu, where there is an altitude difference of nearly 4000 meters. Therefore, a separate design and construction of a circuitous route is required.

　　Drilling holes in the Himalayas? Why does China insist on building the China Nepal Railway? How difficult is it to build?

　　The picture shows the construction of a high-altitude railway

　　To build this railway that needs to cross the the Himalayas, we need to take into account many topographic factors. The existence of the the Himalayas has blocked the warm and humid air flow from the south, resulting in a low temperature and little rain in the northern foot area all the year round. There are many permafrost and moraine lake landforms. However, in the southern foot area, with the change of altitude, there is an extremely complex natural distribution, especially the clear wet and dry climate distribution, which will lead to large-scale floods, landslides, mud rock flows, mountain collapse and other geological disasters during the continuous rainfall. This is a huge risk factor for the project construction. Therefore, a long More than 20 kilometers of tunnels.

　　In order to successfully penetrate tunnels in such steep terrain, China has used a large heavy machinery shield machine, which has become the most suitable choice. As the shield machine currently embodied in China, the Jinghua has a diameter of 16 meters and a total weight of more than 4000 tons. It is equipped with independently developed double liquid grouting technology, which can achieve concrete pouring during the excavation of tunnels, greatly improving construction efficiency and most importantly reducing construction risks. Because the Jinghua can quickly transfer the gravel in the tunnel to the outside and carry out prefabricated pipe laying and reinforcement operations, it can ensure the engineering quality when penetrating the Himalayan tunnel. Only a few countries in the world have mastered this advanced equipment. China's large-scale shield machine Mechanical technology has provided strong support for the China Nepal Railway.

　　Drilling holes in the Himalayas? Why does China insist on building the China Nepal Railway? How difficult is it to build?

　　The picture shows a large shield tunneling machine in China

　　Nepal itself has abundant tourism resources, attracting people from surrounding areas all year round. In addition, its own hidden mineral resources, such as iron ore, copper ore, magnesite, and mica, have been difficult to transport due to unfavorable transportation factors. For a considerable period of time, Nepal's foreign trade mainly relied on India, especially in terms of energy resources, which has long been constrained by India.

　　Through this route, China and Nepal will not only facilitate two-way exchanges of personnel and resources, but also benefit Nepal's demand for energy security and get rid of the high degree of material imports from India. Especially in recent years, China has been accelerating cooperation and exchanges with neighboring countries, actively engaging in industrial production and technological exchanges with other countries. This means that China and Nepal can effectively cooperate on advantageous resources through the railway network in the future, and jointly promote the development of both sides.

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