Scene exposure: Pakistan Shiba flood gate is like a movie special effect! Under what circumstances do you need to open floodgates for flood discharge?

From the water level line, when the water level line of a reservoir or dam exceeds the warning line, you can choose to open floodgates to lower the water level line of the reservoir. When the water level line rises greatly, we should be vigilant to avoid the situation of bank breaking. It is necessary to comprehensively consider all aspects to judge whether it is necessary to use the water level line to open the floodgates.

From the point of view of continuous precipitation, besides the water level line exceeding the warning line, it should be judged according to the precipitation combination in the next few days. When the water level of the reservoir reaches the warning line, the water level can be lowered not only by opening floodgates, but also by hydropower generation. If there is continuous precipitation in the flood-stricken area and the water level line continues to rise, hydropower generation can not meet the needs of flood discharge, and flood discharge can also be achieved by opening floodgates. The continuous precipitation in Pakistan since June has led to the continuous rise of dam water level, so it is necessary to choose flood discharge to reduce the risk.

Judging from the upstream and downstream conditions, when a series of floods occur in the upstream, it can no longer bear the disaster, so you can choose to open the floodgates to discharge the flood. According to the flood situation in the upstream of the dam, it is judged whether it is necessary to open the floodgates for flood discharge. Flood disaster will cause geological disaster of flood. When it is further damaged, it is necessary to open floodgates to stop flood. When there is drought in the downstream area, the floodgates can be opened for flood discharge to improve the drought in the downstream area. However, when the water in the upstream reservoir area is better than that in the downstream area, the situation in the downstream area can be improved by opening floodgates to avoid greater drought damage.

Judging from the dam's own conditions, if the dam does not operate for a long time, it can open the flood discharge to test whether the dam can operate normally. If there are too many duckweeds and sundries on the water surface, it will affect the normal operation of the dam and lead to the mistake of flood discharge. At the same time, weather, wind direction and other reasons should be considered in flood discharge work, which will also affect flood discharge.