Feng Shui takes turns, and this time it is the turn of Europe and the United States to be anxious. Perhaps everyone has a feeling that in recent decades, we have always listened to Europe and the United States to get stuck in our necks, and rarely heard that we have any countermeasures. Now, the situation has changed.
As an indispensable equipment in tunnel excavation engineering, China's infrastructure madness is inseparable from the shield machine. After all, in most areas of China's central and western regions, there are mountains and mountains, whether it is the construction of highways or railways, need to use shield machines, in the past China's shield machines have been dependent on imports, so it is very passive. But in the blink of an eye, decades have passed, and China has become the world's largest exporter of shield machines. Now it is now possible to fully seize the initiative and even go to the neck of other countries.
A long time ago, China's engineering and technical personnel's cognition of tunneling has been stuck in the drilling and blasting method. It is to find the blasting point where the tunnel needs to be dug, then drill the hole to fill the explosive, and finally ignite it to wait for detonation. After blasting, it is necessary to erect the arch again to support and maintain the blasted hole. The construction crew then transports the crushed stone from the blasting.
This method is not without advantages, it is cheaper, and it can be used anywhere without picking a location. But there is also a fatal drawback, and that is that the speed is simply too slow. If a tunnel with a cross-sectional diameter of 10 meters is excavated, only about 100 meters will be excavated in a month using this method.
It was not until after the reform and opening up that China paid attention to all kinds of new technologies abroad. With the support of the world's first, China also wants to be in line with the world's advanced construction level. In 1997, China introduced two shield machines from Germany for the first time, and these two shield machines cost us 7600 million yuan.
You know, this is the 7 of the 90s of the 20th century600 million, and the salary of most people in China at that time was only a few hundred yuan. But even with such a high price, we only bought two second-hand units. And if the machine breaks down, we need to spend more repair costs to hire German experts to repair it.
According to Zhang Zhiguo, then general manager of China Railway Equipment, German experts have always been very wary because they always feel that China is a very potential opponent. They are probably worried that if Chinese technicians learn how to repair them, then it will not be far from China making it itself.
The money is not spent, and the anger is not less. Who can endure this kind of grievance? Our engineers were thinking, can't we build this kind of shield machine ourselves? Since Germany sees us as an adversary, we cannot live up to their thinking.
Finally, with the efforts of China's scientific research experts, in 2004, China finally had the first completely independent research and development and production of subway EPB shield machine, and this shield machine was also used in the construction of Shanghai Metro Line 2. Since then, subway projects in other cities in China have basically been carried out by it.
After the realization of independent R&D, production and put into use, China began to actively promote it to the outside world. It's just a pity that the world still trusts the German and Japanese shield machines at that time, and we have not been able to find a suitable opportunity.
Until 2012, Malaysia wanted to build a domestic MRT line. They originally planned to purchase German shield machines, but our staff seized the opportunity to promote them to them. At first, Malaysia didn't trust our products at all, but we never gave up and took the initiative to invite them to visit the site.
When they saw the scene of our shield machine working, Malaysian talents completely believed in it and were willing to import shield machines from our country. Since then, we have opened up sales channels, and after many years of operation, we have sold our shield machines to more than 40 countries, including Italy and Singapore, and this number is still growing.
Now China's shield machine has a very good reputation in the world, with high efficiency, extremely cold-resistant, and can climb slopes, and is extremely adaptable. Not only can we build a shield machine, but we can also build a better one.
As of 2023, China's export of shield machines has accounted for 70% of the world's market! Who would have imagined that just 20 years ago, when we used a shield machine, we would have to look at other people's faces. Now, if we stop exporting EPBs, a significant number of countries will be in trouble.
It's just that our country will not wield the big stick of sanctions at every turn, as a certain country does. Target this, suppress that. The purpose pursued by our country has always been to achieve win-win cooperation and common prosperity. Always treating other countries as imaginary enemies will not make them better, but unfortunately they don't understand this truth.
Now that there are fewer and fewer jewels in the crown of industry in the world, looking back on the road we have traveled before, we find that we have become so powerful. But this is not enough, in the future, we can create more brilliant achievements and make Chinese standards become world standards.
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