What is the distorted satellite image of the Three Gorges Dam transmitted by the Internet?

This is a rumor, which has been proved by specific investigations in our country.

Recently, a remark that "the Three Gorges Dam has been deformed and its dike is about to burst" has been circulated on social networks. After the Three Gorges Group gave detailed monitoring data and China Aerospace Science and Technology Corporation used the satellite image of Gaofen-6 to refute rumors several times, the above remarks are still fermenting. Combined with the "Three Gorges Dam Deformation" map, there is also the "Notice of Three Gorges Waterfall Scenic Area Stopping Receiving Tourists" issued by Yichang Jiaolv Group Cultural Industry Co., Ltd. on July 5.

The above rumors are untenable from many angles. Zhang Boting, deputy secretary general of China Hydropower Engineering Society, is invited to write an article to analyze the pseudoscience in the rumor of "Three Gorges Dam Deformation" and explain what "the dam deformation is in an elastic state".

There are almost no engineering structures that never deform under pressure. The material is deformed under the action of external force. When the external force is cancelled, the deformation of the material can disappear and completely return to its original state. This is elasticity. The "swing" of super high-rise buildings in strong winds is also based on the same principle. According to the three stages of stress and strain, the cracking stage is elastic deformation, the cracking stage is plastic deformation distribution and the failure stage is plastic deformation limit.

Everyone knows that the Three Gorges is the largest hydropower station in the world, but they may not know much about its reservoirs and dams. Why is it that "no matter how big the reservoir is" or "no matter how high the dam is", it is safe as long as it is built abroad, but there must be big problems as long as it is built in China? The logical contradiction of the rumor monger is obvious.

So don't believe rumors.