Writer : Ru Wen
Publisher : Science & Technology Daily, re-produced on 6parknews.com
Direct translation
Image : Web Screenshot
A few days ago, an online rumour that “the official media confirmed the deformation of the Three Gorges Dam, Ministry of Water Resources: Do a good job in preventing floods” attracted attention on social media.
"This statement is purely malicious speculation! The rumors of the deformation of the Three Gorges Dam have been clarified last year. In addition, there is no necessary connection between the so-called dam deformation and the prevention of large floods. It is easy to splice together. It caused public misunderstanding and panic." Zhang Boting, deputy secretary general of China Hydropower Engineering Society, said in an interview with a reporter from Science and Technology Daily.
Many netizens have sharp eyes, and they have reported the rumor to social media platforms as false information. After verification, the social media platform also determined that the rumors were malicious spliced false information, and publicized the processing results.
Writer provided
This "Huang Xiaokun" is not the other "Huang Xiaokun"
Huang Xiaokun, a researcher at the China Academy of Building Research, has received many inquiries during the past two days. The reason is that his personal information was posted in a picture on the reported Weibo.
Weibo screenshot
At the top of the picture is a screenshot of a circle of friends from an unknown source. The picture contains the words "Mr. Huang Xiaokun, Fujian Ningde" and his remarks; below is a screenshot of the introduction materials by Researcher Huang Xiaokun of the China Academy of Building Research. This synthesized picture will make people think that "Huang Xiaokun" in the two screenshots is the same person.
"The screenshot of the circle of friends has nothing to do with me, and I don't know who the "Mr. Huang Xiaokun" of Ningde, Fujian, and it is not clear why my personal information was posted." Huang Xiaokun was interviewed by a reporter from Science and Technology Daily Said.
Huang Xiaokun was shocked when he first heard about this news from a friend. "My research work is mainly related to housing construction, and has no direct relationship with the Three Gorges Dam and other water conservancy and hydropower projects, nor has I published any remarks related to the Three Gorges Dam." Huang Xiaokun said.
Monitoring shows that the Three Gorges Project is safe and reliable
In fact, the rumors of "the deformation of the Three Gorges Dam" did not appear for the first time. In July of last year, relevant experts have carried out doubts and clarifications regarding the so-called dam distortions and pictures circulating on social media. Unexpectedly, a year later, this "old stalk" was reintroduced into hype.
Weibo screenshot
In this regard, Zhang Boting believes that it is necessary to popularize the relevant common sense again, so as to avoid untrue rumors confusing the audiovisual and misleading the public.
Wang Xiaomao, chief engineer of the Yangtze River Survey, Planning and Design Institute, introduced that the Three Gorges Project dam is a concrete gravity dam with a maximum dam height of 181 meters and a maximum dam bottom width of 126 meters. Its flood control design, seismic design, building stability and stress control are all Using very strict design standards.
At the same time, in order to comprehensively, accurately and timely grasp the working behavior and safety status of the buildings in the Three Gorges, the Three Gorges Project area is equipped with a wide range of safety monitoring facilities, with a total of 3 categories, 14 subjects, and 12087 monitoring The instrument is used for automatic real-time monitoring and analysis of the engineering performance.
"Monitoring data since the Three Gorges Dam water blocking operation shows that the working behavior of each building is normal, and the project is safe and reliable." Wang Xiaomao said that in terms of dam deformation, the settlement difference between adjacent dam sections is within 2 millimeters. There is no uneven settlement of the body; the horizontal displacement of the dam foundation changes little, and the dam foundation is stable within the monitoring error range; the maximum horizontal displacement from the top of the dam to the downstream is 30 mm, which is in line with the deformation laws of built concrete gravity dams at home and abroad. Within the design allowable range.
"Under the pressure load, general buildings will produce a certain displacement, which is a normal phenomenon in accordance with the law." Zhang Boting believes that as a very large building, under the action of huge water pressure, the crest of the dam is the largest downstream The horizontal displacement does not exceed 30 mm, which indicates that the stability of the dam structure is very high.
Effectively relieve the flood control pressure in the middle and lower reaches
Since the first water storage in October 2010 to 175 meters, the Three Gorges Project has achieved the goal of 175 meters water storage for 10 consecutive years, and has achieved significant comprehensive benefits in flood control, power generation, shipping and water resources utilization.
“Among them, the benefits of flood control are particularly prominent. The flood storage capacity of the Three Gorges Project is 22.15 billion cubic meters. Through joint scheduling with the upstream reservoir group, the flood control pressure in the middle and lower reaches of the Yangtze River can be effectively relieved and play a huge role in flood control.” Wang Xiaomao said, 2012 In July, there was a major flood in the Yangtze River Basin. The largest flood peak in the Three Gorges Reservoir since its establishment was 71200 cubic meters per second, and the maximum peak cut amount reached 28200 cubic meters per second. The flood peak was reduced by nearly 40%, which greatly reduced the middle and lower reaches of the Yangtze River. Flood control pressure.
According to statistics, as of the end of 2019, the Three Gorges Reservoir has blocked floods 51 times, with a total storage capacity of 160.118 billion cubic meters, which has played an important role in flood prevention and disaster reduction in the middle and lower reaches of the Yangtze River.
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