Restricted exports for large TBMs? Foreign media pointed out that this time it was the turn of Europe and the United States to be constrained
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The West is at the forefront of the most advanced chip and semiconductor manufacturing, telecommunications and other fields because it started early and mastered many core technologies. The West relies on basic technology to arbitrarily raise the commodity **, likes to buy but does not buy, and the critical quality is also blocked.
China is well aware of the importance of mastering key technologies, and strives to overcome various technologies that have been monopolized by Western countries, including shield machines. Will Western countries rely on China's shield machines in the future, and will large shield machines be limited to exports? Foreign press This time, the West was"Choked his neck"。
A shield machine monopolized by the West.
A shield boring machine is a technical device used in tunnel construction, where soil and rock are excavated from the ground and support structures are constructed within the tunnel. The EPB usually consists of a cutter, a drive system, a control system and a support system.
Mastering the shield machine is equivalent to mastering the ability to build large-scale transportation hubs, digging mountains to seas, and undersea tunnels. The reason why China is called"Infrastructure Maniacs", which is inseparable from the great contribution of the EPBM.
But who knows, decades later, China is also facing the situation of shield machines in the throat, and the shield machines that have been strongly monopolized by the West are expensive, not to mention the shield machines sold to China, which are also the top of China's shield machines and threaten not to manufacture.
Herrenknecht AG of Germany and Salford Group of the United Kingdom are representatives of Western companies that produce platemaking machines; In 1997, China bought two plate-making machines from Germany for 700 million yuan**, which is still a significant amount.
If the shield fails, China must invite the manufacturer's technicians to carry out repairs, and the cost is calculated from the time the technicians go abroad. Technicians cordon off the repair site to prevent technology leakage. Since technology is not readily available, China wants to choose the path of independent research.
China's breakthrough in plate-making machinery.
China was the first to obtain shield machine technology through introduction and cooperation In the 80s of the 20th century, China introduced shield machine technology from Western countries and began to cooperate with foreign companies in tunneling. This has laid the foundation for the development of China's shield machine industry, and since the 90s of the 20th century, China's shield machine enterprises have gradually developed, carried out technological innovation, and continuously improved their technical strength.
By learning and introducing advanced foreign technology, Chinese companies have made great strides in the research and development, manufacturing and design of shield machines: in 2002, China launched the 863 program, which was successfully manufactured"China Railway No. 1"The shield machine is an important step towards ending the dependence on Western shield machines.
China's plate machinery manufacturing enterprises are gradually entering the domestic market and beginning to gain a firm foothold in the international market. China's plate machinery has been applied in many large-scale projects at home and abroad, such as the north-south canal project and the Beijing-Shanghai high-speed railway. China's plate machinery enterprises continue to improve product quality and innovation capabilities, and are gradually competing with internationally renowned plate machinery enterprises.
So far, Chinese artificial panel industry has made a number of breakthroughs in large-diameter wood-based panel machinery, ultra-long-distance wood-based panel machinery, high-pressure seam injection molding wood-based panel machinery and other technical fields. This also restricts the export of large plate machinery, and the foreign media bluntly said: this time the West's turn is"Keep it neck-and-neck"。
China's shield machine has overcome countless difficulties and obstacles, from import to export, from scratch. This spirit will continue as China grows bigger and stronger in various fields of science and technology to create another bright future.
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