I think foreigners are actually quite miserable, but if they dare to jam our necks, in the end we not only break through, but also sell it to his hometown, and that's how the shield machine is.
The shield machine is used to build tunnels, and it was first built by the French. People used it to build tunnels in the early 19th century, and we didn't know there was such a thing at that time. Until 1987, when our vice minister of the Ministry of Railways, Sun Yongfu, went to Italy to investigate, and saw that people's shield machines could advance 1,300 meters in one month, which was amazing, and we also wanted to use it.
Within a few years, we were going to repair the Qinling Tunnel, so we thought about whether we could use other people's shield machines, so we spent 700 million yuan to buy 2 shield machines from Germany. The shield machine is different from other things, you buy a high-speed rail, you can use it on any line, but the shield machine is tailored according to the diameter of the tunnel, geological conditions, and ambient temperature.
Moreover, European countries are too arrogant, people think you don't have it, so they will sell it to you, and the after-sales service attitude is not good, you ask me to repair the machine, then I don't pay 3000 US dollars a day too much, or start from leaving home; When I repair, I don't let the Chinese be present, if you don't accept it, then forget it.
In 2001, a Herrenknecht shield we bought from Germany failed during excavation, and the whole project was stopped, waiting for an expert from Germany. At that time, some people were very curious to see how high the level of this expert was, and as a result, this expert was a 26-year-old Colombian engineer, and he had just worked for 2 years, and he was just an ordinary engineer in Germany, so we would become an expert, then you see, it is obvious that bullying the Chinese.
The money was spent, the experts were invited, and the problem was solved? No, because these foreign experts, the repair time is set by them, and they don't work overtime. I don't like to work overtime, but the project has a construction period, and a delay of 1 day is money.
I think these foreign companies are quite eyeless, think about it, China's big market, you look so ugly, can we bear it, definitely can't bear it. In 2002, we included the shield machine in the 863 plan and decided to develop a domestic shield machine.
The shield machine is actually very complex, known as the "pearl in the crown of industry", but we pick the pearl, a shield machine has 2-30,000 parts, involving more than a dozen disciplines such as civil engineering, surveying, mechanical, electrical, materials, control, etc., to each discipline has no shortcomings, is a hexagonal warrior to get the shield machine.
China Railway Tunnel Group has become a R&D team of 18 people, these people are young people, they went to the construction site, went to almost all the cities where the subway is constructed, observed one after another shield machine, and figured out the principle and structure of the shield machine. After 6 years of technical research, we finally developed a domestic shield machine. But the problem comes again, the domestic shield machine has, but no one dares to use it, the construction party has to listen to Party A, but in order to ensure the construction period and quality, Party A feels that the foreign shield machine is more secure, not domestic, and finally Tianjin Metro Line 3, let it excavate together with the German shield machine.
This project, but completely started the reputation of China's shield machine, what was it at that time, that is, above this subway, there are many ancient buildings, including Zhang Xueliang's former residence, museums and a porcelain house, this porcelain house, particularly expensive, if the surface subsidence is not well controlled, the building will produce cracks, and then you will lose a lot of money, and the construction party is very nervous.
In the end, I found that there was something about China's shield machine, which passed through these ancient buildings safely, and it was better than the same shield machine abroad.
According to the script, is the domestic shield machine to go to the pinnacle of life, but unfortunately the reality is not, the construction party still did not dare to use the domestic one, because of inertial thinking, I think that the imported is good, a domestic shield machine to delay the construction period, the later stage is very troublesome.
The domestic shield machine really eliminated people's doubts, or on the Chengdu subway line in 2012, Chengdu's underground construction conditions are very complicated, and people said at that time that only the German shield machine can be used. However, the construction party held the attitude of trying and seeing, so that the domestic shield machine and the imported shield machine competed on the same stage, and the left and right lines were excavated at the same time. As a result, I was stunned, the progress of the domestic shield machine was faster, 2 months faster than the import, and the reputation started all of a sudden.
In the same year, a project in Malaysia also needs to purchase a shield machine, so we went to the bidding, but Malaysia did not believe us at all, saying that we have no experience, but we could not stand the Chinese side many times of communication and negotiation, and finally Malaysia agreed to purchase 2 units, only to know afterwards that this decision is quite correct, because China's shield machine, created a new record for Malaysian shield, 43 days ahead of schedule to complete the construction period, except for China, really no one can complete.
The key is that the price of China's shield machine is still very cheap, and in the past, we imported one, which cost 3500 million, now only 25 million, the complex point is only 50 million, at this price, who can beat China, so China's shield machine, not only in the land of China, but also exported to Singapore, France, Italy, Lebanon, Russia and other 27 countries.
So I think foreigners should be quite afraid of China, high-end manufacturing, China is almost done, no matter what the technology, but once it is mastered by China, China is doing better than it.