What are China s major projects that go to heaven and earth ? What are the black technologies of th

In fact, due to the ChineseBlack technology, which has reached the world's leading level in some fields, and has shocked the world, even owning the worldThe highest technologyThe United States, which is at a high level, is also impressed by China's scientific and technological inventions and feels inferior. Cross Harbour TunnelThe construction is a huge and difficult underwater project, which is many times more difficult than on land due to the special and complex topography of the seabed. And this is only one of the difficulties, in the depths of the sea, under the strong pressure of seawater, many building materials can hardly withstand the immersion of high concentration of salt water, as well as the endless washing of seawater, huge wind and wave impact.

At present, the construction error of China's undersea tunnel is less than a millimeter gap, and it can be docked directly underwater. In the construction process, use a huge crate to collect the submersible tunnel, must be docked in the crate, this construction method is not only a very big test for the quality of the submersible itself, but also involves the whole project, all the engineering details must be carried out in strict accordance with the operating procedures, can not This is a comprehensive test of the scientific and rational use of all technologies in the construction of submersibles.

China has completed 2 major mega projects in one go, one in space, that isTiangong space stationEngineering,Shenzhou-12 spacecraftsuccessfully returned to Earth, and the Tiangong space station was basically swiped on the Internet, while the other was deeply hidden. Because it is 2,000 meters under the sea, it turns out that China is building the Tiangong at the same time, and the Dragon Palace project is still being carried out, and the difficulty of building a space station at such a deep water is not lower than that of the Tiangong, which is a real black technology.

Over the years, China's infrastructure construction is in full swing, many cities are building subways and tunnels, which requires the use of special shield building machines, each project needs to customize special shield building machines according to different tunnel diameter specifications, and China has been able to achieve independent research and development, design, manufacturing, assembly and commissioning, as well as after-sales warranty and technical consultation, China's shield building machine to compete in the global market, has achieved very good sales performance, accounting for more than 70% of the global shield machine market.

China's big projects are all over the world. Including the launch of our Tiangong-2 spacecraft and the Shenzhou-13 and Shenzhou-14 manned spacecraft. Beidou navigation system, etc.

What super projects have my country done in 2019? After reading netizens: It turns out that China has so many world firsts.

Qinghai-Tibet Railway, Hong Kong-Zhuhai-Macao Bridge ......

How many world-class megaprojects are there in China? You'll know after reading it.