To save the Yellow River, was the core plain of China destroyed by the Yellow River?
If the Yellow River had not flooded, China's economy and culture might have surpassed that of Europe and entered the Age of Global Exploration earlier.
The most obvious example is the largest tonnage excavated from the shipwreck of the Sui-Tang Grand Canal in China of more than 300 tons, far exceeding the 110 tonnage of Europe that opened the Age of Discovery.
Today, the Yellow River is underwatered, and flood seasons and navigability continue to severely constrain the 500 to 600 million people living in and around the North China Plain.
How to make the Yellow River better serve people's production and life is a very wise issue.
There is also an answer to this question, and there is a solution.
Let's first look at the major changes in the history of the Yellow River and find out its pattern.
After the Yellow River exits the mountain on the west side of Taohuayu Zhengzhou, it enters the plain area, and its flow rate drops rapidly, and the sediment is quickly deposited in the section of the tofu waist, and the river channel is deposited into an above-ground river.
The North China Plain and its surroundings are currently home to more than 500 million people, and the North China Plain was the core of China's economy and culture before the Southern Song Dynasty.
After the Northern Song Dynasty, the Yellow River played a decisive role in the economic production of the North China Plain.
To this day, the course of the Yellow River is still very frequent. Let's start with the changes in the mouth of the Yellow River since 1949.
Let's take a look at some of the changes in the middle reaches of the Yellow River, the left and right swings of the middle and lower reaches of the Yellow River. The change in the course of the Yellow River simply follows the ancient experience of water flowing downward.
How will the Yellow River be managed in the future?
The middle and upper reaches of the Han River are completely diverted to the Yellow River, and the lower reaches of the Yellow River can maximize the Yellow River's navigation, irrigation and ecological functions, and efficiently serve people's production and life.
The Huanghan Canal can double the water volume of the Yellow River, greatly scouring the river, and the capacity of the Hanjiang Huai River and the upper reaches of the Yellow River can ensure the non-flood season navigable water in the direction of the Sui-Tang Grand Canal.
The Yellow River Canal needs to use controlled flood control and manual intervention to excavate river channels and waterways.
Excluding the current Yellow River channel, the additional excavated channel has a total length of more than 1,600 kilometers, a two-way passage width of 150 meters, and a depth of 8 meters with a flow capacity of 2,000 cubic meters per second. According to the calculation of 10 meters of earthwork, 2.4 billion cubic meters of earthwork need to be excavated. Considering the construction of slope protection ramps, the amount of earthwork should be turned over. Although the direction of the Sui-Tang Canal makes full use of the existing river channel, its earthwork volume is low.
The sum is estimated that the amount of earthwork that needs to be excavated is also between 20~5 billion. It is impossible to excavate by manpower, and the cost is extremely high. However, the annual storage of the Danjiangkou Reservoir is as high as 50 billion, and the river is washed out for 10 years, which can be achieved with manual intervention.
In the future, there will be nearly 80 billion cubic meters of water in the middle and lower reaches of North China, plus the original water volume. Now that the climate is warming, the rainfall during the flood season will increase, and the river will be greatly reduced, and it will be fixed.
Schematic diagram of the North China Shipping Revival Project
The Huanghan Canal is the abbreviation of the second line of the middle line of the South-to-North Water Diversion Project, which is both a canal and a waterway. It has a navigable 2,000-ton waterway with an annual water diversion of at least 25 billion cubic meters. An artificial canal with a flow capacity of 2,000 cubic meters per second.
How much will the North China Shipping Reconstruction Project investment be? How long will the construction period be?
The significance of the Huanghan Canal is not only for the water needs of Henan, Hebei and Shandong. It will also meet the needs of flood control and water storage in the Huai River and Han River basins. Ensure the water demand of the lower reaches of the Han River and Huai River.
Through the construction of pumped storage power plants ranging from 6GW to 12GW. It can ensure that 25 billion cubic meters of water will be transferred from the Three Gorges to the middle and lower reaches of the Han River every year. It can ensure that at least 40 billion cubic meters of water resources are transferred from Fangcheng Pass every year.
And the Han River, the Danjiang Estuary comes to the water harvest year. There is no need to enable pumped storage water transfer. For example, in the past five years, the amount of water coming from the Danjiangkou Reservoir has exceeded 50 billion. It is completely possible to link the Danjiangkou Reservoir and the Huaihe River Basin Reservoir to help each other with drought and flood.
The Huanghan Canal will not only meet the water needs of northern China, but will also provide more than 50 billion cubic meters of water to northwest China.
When there is no longer a shortage of water in the lower reaches of the Yellow River, we will divert the water of the Yellow River in the Black Mountain Gorge and on the Loess Plateau. Most of the Yellow River water is left in the northwest.
50 billion cubic meters of water directly irrigates 200 million mu of new cultivated land. And the evaporation of this water to form a secondary rainfall will completely change the landscape of the northwest. Storing water in Qingtu Lake, Juyanhai will form a greater climate improvement.
With this vision alone, China's future is promising.
See the article for details: Why the water diversion project designed by academicians and professor-level engineers cannot be realized, and the Hongqi River can only be shared on paper: national scientific research, pumped storage water diversion project
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