The Three Gorges Dam opens three holes for flood discharge. Does this have any effect on floods?
Simply speaking, flood discharge is to put the excess water from the upstream to the downstream. The function of this is to protect the dam at first, and then to protect the upstream and downstream to avoid floods.
The Three Gorges Dam issued a blue flood warning on July 2, and the "No.1 flood of the Yangtze River in 22" was formed in the upper reaches of the Yangtze River. The Three Gorges Dam opens the three-hole sluice for flood discharge, and the discharge through the three holes is 435 cubic meters per second. ‘’?
In fact, every year, there will be flood season all over the country, and this year, there will be floods in many places. In order to reduce the occurrence of floods, dams play an important role. The principle of flood discharge is that after the flood occurs in the upper reaches of the flood season, the dam will discharge the flood to the storage area. When the water level in the storage area reaches the warning line, it is necessary to open the floodgates and discharge the water to the downstream flood discharge area.
Three Gorges flood discharge
Secondly, the flood discharge of the Three Gorges Dam has the following functions: First, the water level exceeding the warning line will increase the pressure on the dam, which is likely to burst the dam, so flood discharge can protect the Three Gorges Dam. Second, this is also a kind of protection for the upstream and downstream residents. First, the water gate will be opened for flood discharge, which will make the upstream water level drop, which will undoubtedly protect the upstream safety; Secondly, it is also a kind of protection for the downstream. It seems that opening three holes for flood discharge is harmful to the downstream, but actually opening three holes will not have a substantial impact on the downstream. However, in the face of extremely strong rain, more holes have to be opened for flood discharge. For example, under the pressure of flood, Wangjiaba of Huaihe River can't wait to open nine holes for flood discharge, while nearly 2 million residents in the downstream have to leave their homes. After opening nine holes, their homes will become a Wang Yang in an instant, but more people will be protected.
Three Gorges Flood
Different degrees of rain have hit all parts of the country this year, and many places in the south are also experiencing floods. Under this natural disaster, not only dams are playing an important role, but also many people are using their own strength to save more people. In the disaster, we saw this moral character of unity and unity.