Is Jinan in danger of being submerged by the Yellow River?

Recently, heavy rain and torrential rain have been staged frequently all over the country. Although Jinan is located in North China, it has issued several rainstorm warnings in succession, and even issued a red rainstorm warning. After the rainstorm, many roads in Jinan were flooded, so many people will inevitably associate them with the Yellow River. In theory, Jinan is in danger of being submerged by the Yellow River, because there is also an overground river in the Jinan section of the Yellow River. Although it is not as serious as the ground river in Henan section, it is an absolute fact that the riverbed is higher than the urban area of Jinan. Therefore, as long as the Yellow River in Jinan meets the once-in-a-thousand-year flood, it is really likely to face the risk of being flooded. However, the Yellow River levee is not what it was 100 years ago. With the blessing of modern infrastructure level, the scene of a thousand miles of Zeguo in the Yellow River flood area will never be staged again.

Accurately speaking, the Shangdi River in Jinan section of the Yellow River is located in tianqiao district, also known as Tianqiao section. The riverbed of this section of the Yellow River is not only 4-5 meters higher than the downtown area of Jinan, but also the most curved part of the Jinan section of the Yellow River. The Yellow River has made two continuous bends of about 90 degrees here, which caused particularly serious sediment deposition in this part, and stood on the Yellow River levee in Tianqiao section. On the surface, the river is calm, and the flow rate is not turbulent, but there are many eddies under the water surface due to the force formed by the turning of the water flow. Therefore, if the Yellow River in Jinan really breaks its banks one day in the future, there is a high probability that it will be located in this area.

Of course, in addition to the powerful Yellow River levee mentioned above, there are also levees on the Yellow River, such as Sanmenxia and Xiaolangdi. The flood disaster in the lower reaches of the Yellow River is not obvious. The flood-prone areas of the whole Yellow River basin are mainly concentrated in the middle and upper reaches, but the floods in the middle and upper reaches can be completely intercepted by dams, and the floods in the main channel can't reach Jinan at all. In addition, many small tributaries in the basin can not be merged into the main channel of the Yellow River at all, which is obviously different from the lower reaches of the Yangtze River. It is impossible to flood only by relying on the rainwater borne by the main channel of the lower Yellow River. Therefore, the probability of flood in Jinan section of the Yellow River only exists in theory, but in fact it is basically zero.

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You don't have any geographical knowledge to ask questions, do you? Jinan is high in the south and low in the north, and the Yellow River is in the low-lying north. The height difference between the north and the south of the main city reaches 100 meters. Does your water flow upward? Besides, the Yellow River Dam is almost impregnable. What are the hazards of river banks that are more than ten meters above the highest water level during the maximum flood peak period in recent years? Moreover, in recent years, due to the water and sediment regulation of Xiaolangdi Reservoir in the middle and upper reaches, the riverbed is getting lower and lower. The biggest problem of the Yellow River now is to ensure a steady stream. What do you think about every day?

No way, the Yellow River has been flowing through Jinan for three or four hundred years, and the flood control levee is impregnable. Jinan is as stable as Mount Tai. Pay attention to safety but don't worry.

If it had been decades ago, it would have ensured that the Yellow River would continue to flow upstream. How many reservoirs and irrigation water diverted from the Yellow River will be blocked upstream? Even if the floodplain on the north bank of the Yellow River can't be stopped, it has long been used to protect Jinan from losing his life.

Jinan city will not be flooded by the Yellow River, because there is Jiyang flood discharge area. The first flood discharge area is Dongping Lake, the second flood discharge area is Taiqian, and the third flood discharge area is Heze. In order to ensure the safety of Jinan. If the Yellow River floods, both the Yellow River north of Jinan and the upper reaches of Jinan may be flooded. There are many flood discharge areas there, so Jinan will not be flooded.

The Yellow River is a hanging river for Jinan. In case of flood in the upper reaches, it is a great threat to Jinan. Flood control drills are held every year. As you said, those stones piled on the Yellow River dam have long been useless. It is impossible to flood Jinan. The dam built in the south of Jinan is too high. If there is a flood, it is estimated that it will also be discharged to the north.

As early as fifty years ago, the height of the Yellow River bed was flush with the roof of quancheng road Department Store. Therefore, the south bank of the Yellow River is the key flood control site. Every flood season, all units should send people to the dam.

In the 1970s, the Yellow River Bridge in Jinan was flooded many times, and Jinan often called for the protection of the Jinan section of the Yellow River. So, don't be too careless. If there is a rainstorm like that in Henan, I'm afraid Jinan will be more rude.

North of the north bank of the Yellow River in Jikou, historical records are likely to be killed by me! The reason for the terrain! Therefore, it is great wisdom for successive regimes never to expand Jinan to the north! ! !

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Now the height of the dam is flush with the Hero Mountain Monument, so it is impossible to let this large tank of water enter Jinan by blasting Changqing or Jiyang.

Not before, not now. Although the Yellow River in Jinan belongs to the aboveground river, its riverbed is much higher than the urban ground. But now, the first is to gradually divert water, and the water is not large. Second, the country's flood control measures are relatively perfect. Third, the Jinan end of the Yellow River levee is more than two meters higher than the other side. In the floodplain, the measures to abandon soldiers and protect the handsome have already hit Shui Piao. One hundred years have passed since the flood, and it is also the other side that will be flooded.

This summer, Henan province suffered from unusually heavy rainfall, with heavy rains in the central, western and northwestern regions, and even heavy rains in some areas. This caused the subway station to enter the water and the train stopped. The rainstorm touched the hearts of hundreds of millions of people in China. Because of the different water systems, the Yellow River will not burst its banks because of the rainstorm in Henan, but it is still possible to burst its banks, but the possibility is relatively small.

Jinan is located in the lower reaches of the Yellow River. Because of sediment deposition and uneven terrain, water flow is prone to form many unstable undercurrents and eddies, which is prone to danger.

Nowadays, due to global warming, the global sea level will rise by at least 1 m from 100 to 200. Sea level rise has a great impact on the social economy, natural environment and ecosystem in coastal areas. Sea level rise will flood some low-altitude countries and regions, and in some coastal countries with higher altitudes, some coastal cities will be flooded. Some cities in Shandong Province are located in the coastal areas of East China, and there are 7 major cities under the jurisdiction of Shandong Province/kloc-0, of which Laiwu City is the highest and Jinan City is the third highest. From this perspective, Jinan is a city that is less affected by sea level.

When we open the map, we will find that the Yellow River winds for thousands of miles and passes through dozens of cities, including Jinan. Will Jinan, located in the lower reaches of the Yellow River, be threatened when the water level of the Yellow River is high?

The Yellow River is the second longest river in China, with a total length of about 5,464 kilometers and a drainage area of about 752,443 square kilometers. The temperature difference between winter and summer in the Yellow River basin is large, and the seasonal temperature changes obviously. The middle and upper reaches of the Yellow River are dominated by mountains, while the middle and lower reaches are dominated by plain mountains. Because the middle reaches of the Yellow River flow through the Loess Plateau in China, carrying a lot of sediment, it will carry 65.438+0.6 billion tons of sediment every year, of which 65.438+0.2 billion tons will flow into the sea, and the remaining 400 million tons will stay in the lower reaches of the Yellow River all the year round, forming an alluvial plain, so it is also called the river with the largest sediment concentration in the world. The sediment carried by the Yellow River is easy to deposit when it reaches the downstream, which makes the riverbed of the Yellow River extremely high above the water surface and forms an "overground river". The sediment deposited in the Yellow River is loose and unstable, so it is impossible to gather together all the time, so once the current speed is higher, it is easy to be taken away.

The Yellow River flows through the Loess Plateau, and the surface is covered with a lot of sand and gravel. Once it flows, all the sediment is brought into the Yellow River, making the bed of the Yellow River higher and higher. Because the sediment deposited under the Yellow River is easy to be taken away, it is unrealistic to fish out the sediment deposited at the bottom of the Yellow River. Therefore, in order to solve the flood of the Yellow River, it is still necessary to appropriately raise the Yellow River levee, but this is only a temporary solution, not a permanent cure. Therefore, it is necessary to improve the ecological environment around the Yellow River by planting trees, so as to better control the flood problem of the Yellow River.

In the past, the direction of the Yellow River has been changing. Now, the Yellow River Estuary is in Shandong, but historically, the Yellow River Estuary is not in Shandong. The northernmost part of the Yellow River enters the Bohai Sea from today's Tianjin and Hebei, and the southernmost part enters the Yellow Sea from today's northern Jiangsu. The breeding of human civilization cannot be separated from rivers. The Yellow River is the mother river of China people, and its flow direction is tortuous, which is the result of our continuous struggle with nature in utilizing and transforming the Yellow River.

There were six major diversions of the Yellow River in the past, and the last one occurred in the fifth year of Xianfeng in Qing Dynasty (1855). The Yellow River moved to the present channel, starting from Henan, passing through Dongming, Dong 'e, Pingyin, Changqing, Jinan, Jiyang, Binzhou, Lijin and Kenli and entering the Bohai Sea.

The Yellow River is our mother river, and its basin has influenced our generations. After six major diversions, its influence has also changed. /kloc-in 0/855, the Yellow River diverted to seize the Daqing River into the sea, which was a great event in the history of Jinan and Shandong in modern times and brought profound influence to Jinan and Shandong in many aspects. The flood of the Yellow River has brought countless floods to Jinan, with a large scale and a long duration, and the disaster is more serious than any period in history. The Yellow River disaster has seriously damaged the ecological environment of Jinan, destroyed people's production and life, and further affected the people's feelings and culture of Jinan.

With the development of social economy, the Yellow River has now lived in harmony with Jinan and become a river that benefits Jinan. Therefore, the probability of Jinan being submerged by the Yellow River has dropped to a very low level.

Recently, continuous rainstorms have caused rivers in Henan and other provinces to rise, but this rainstorm should not cause hidden dangers to the Yellow River. In addition, although the Yellow River has an overground river in Jinan, with the development of science and technology, the Yellow River levee has been very strong. Therefore, the probability of Jinan section being submerged by the Yellow River is still very small.

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