2,600 tons of major national weapons came out, and European and American technology was limited!
How can something so important be sold?
In recent decades, the United States has been targeting us, from large aircraft to semiconductors and drones, from new energy sources to artificial intelligence, to assert its technological supremacy.
Coupled with stimulus factors such as the United States and the West, a large number of outstanding enterprises such as Huawei and SMIC have emerged in China, and have made some achievements in semiconductors, artificial intelligence and other fields, including'A great power is a heavy weapon'--Shield machine!
The head of the TBM is underground"Super probe", is an important equipment for the construction of underground tunnels, railways and highways, and is called"--Shield machine! "。
In the absence of armored tunnelling equipment, manual excavators and buckets are usually used for excavation, which has the disadvantages of low speed, high labor cost and large environmental impact. In order to solve these problems, China initially chose to introduce foreign equipment!
More than 20 years ago, China was building the Xikang Railway at full speed, and the construction of the Qinling Tunnel faced both geological and construction challenges. In order to fully promote the tunnel excavation and ensure the safety of construction, China decided to introduce foreign protective equipment. At that time, the German shield machine was famous, and its technology and reputation won the favor of China.
In negotiations with Germany, German engineers swore by it"China will not be able to build such an aircraft in another hundred years"。Then, they drove out 3$500 million of **,said'Buy it or leave', and even forbidden to visit.
However, under their cynicism and restrictions, we were unable to react and had to spend 700 million yuan to import two vehicles. Since 2006, 130 armored vehicles have been imported from abroad, and this number is not only huge, but also brutal.
In the face of China's growing construction demand, the state has included shield machines and other construction machinery projects"National Research and Development Programme"to conduct joint research between companies and universities.
Two years later, China's first machine was able to operate in soft soil areas"Forward"The shield machine went offline; In 2008, China's first one that can operate in complex geological conditions"China Railway No. 1"The shield machine went offline; In the past two years, China's self-developed ones have a larger diameter"Jinghua"The 150-meter-long TBM and 4,300-ton total weight rolled off the assembly line, completely reversing the dominance of Europe and the United States.
Good pilot"--The world's largest diameter high-speed rail slurry balance shield machine rolled off the assembly line in Hangzhou in January 2024, with a main engine length of 158 meters, a total length of 128 meters, weighing 2,600 tons, is currently the world's longest single-cutterhead tunneling distance, the largest diameter of the shield machine, equipped with intelligent tunneling, intelligent assembly, early safety alarm, monitoring and other intelligent systems, marking China's shield machine construction intelligence to a new level. The intelligent level of shield construction in China has reached a new level.
Now, China has not only localized large shield machines, but has also become the world's largest exporter of shield machines, with a market share of up to 65%, which has dropped to 1 10. It is understood that China implements export controls on large shield machines in Europe and the United States and other countries, and implements a technical blockade on them. Some foreign media said: Western countries have tasted the taste of having their throats cut!
From passive off-line shield machines in weak soil layers, to shield machines that solve complex geological problems in the field, to the world's largest diameter shield machines, every technological progress is inseparable from the innovation of hydraulics, milling machines, spindles, control systems and other technologies. Behind all this, there are countless scientists, and they are ours"Ace", also ours"Chinese power"。
Therefore, we believe that in the future we will be able to'Breakthrough'。If you agree, please like and **give it to more people.