please make me king

Chapter 1067 Erosion and Silt Balance
Now that it's here, is there any reason to give up halfway?

After Zhang Shun finished watching Guanghui Qukou, he asked Zhang Jinyan to lead the crowd to the "Diaoerzui".

It wasn't until Zhang Shun approached the mountain to take a look that he realized what the situation of "Diao'erzui" was.

It turned out that the so-called Diao'erzui was actually a mountain bag in the valley upstream of the exit of the Jinghe River.

The river where it is located is Miaomiao, and the water volume is quite abundant.

"There is an old legend that if you open your mouth, there will be water in every corner of the kitchen."

Zhang Jinyan couldn't help pointing to the mountain bag and said to Zhang Shun: "From this point to the north, dig a stone cave, which is less than a mile away, and it is estimated to be completed in a few years. Irrigate it with Jing water to benefit all generations!"

Are you kidding me?

Zhang Shun almost laughed out loud when he heard the words. The Guanghui Canal has been built for [-] years, but there are only [-] steps to open the stone canal and [-] steps to make the cave. .

Now you tell me to dig through this mountain bag with a diameter of more than one mile, and it took several years to make it?

Anyway, Zhang Shun was born in the construction industry in his previous life, so he has an intuitive feeling for the amount of work.

If you put aside the previous life and go directly to machinery and explosives, not to mention this small mountain bag, you just let him level the entire Zhangjiashan. As long as the funds are in place, everything will not be a problem.

But in this day and age, not to mention shield machines, there are not even excavators and residual earth trucks. What do you use to dig caves that are so many miles away?
Just relying on manpower, it took nearly [-] years to dig through this mountain bag. How do you know that Jingshui will not continue to be cut down and abandoned again?
"No, no!" Zhang Shun shook his head and said, "It took a lot of manpower and material resources in vain, but it will be another great benefit for decades!"

"If a dam is built, the water level problem can be completely solved, but it is also afraid of silt."

"Then what if we build a cofferdam and raise the water level by restricting the waterway?"

"It won't work either, the faster the river is, the faster the waterway will be cut!"

"Wait, lift everything?"

Zhang Shun couldn't help but have a flash of inspiration, and he squatted down on the ground and picked up a stone to write and draw on the ground.

When I was in class in my previous life, the teacher once told about Dujiangyan, a classic hydraulic project in ancient China.

Due to the passage of time, Zhang Shun almost forgot all the details.But he remembered a basic principle of Dujiangyan: "[-] points of water, [-] points of sand".

In fact, due to the difference in geography and terrain, even if Zhang Shun knew all the details, he might not be able to replicate Dujiangyan.

But Zhang Shun learned something from it.

Since the river water cuts down quickly and the river water accumulates slowly, what if the river water is neither fast nor slow to form a balance of erosion and siltation?
Just when Zhang Jinyan and the others looked puzzled, they were stunned for a moment when they saw Zhang Shun writing and drawing, and speaking words that seemed to be half understood.

Just at this moment, Zhang Shun suddenly heard Zhang Shun ask: "When will this Guanghui Canal be officially opened for irrigation?"

"Chenghua was built in seventeen years, about one hundred and fifty years ago." Zhang Jinyan counted with his fingers for a long time.

"In [-] years, the cut is more than six feet, and the cut is four points every year. The cut is so strong, no wonder Guanghuiqu has been abandoned for [-] years!" Zhang Shun got the data, did the calculations, and couldn't help but shook his head and smiled wryly. road.

"I already know the truth. The solution lies in the river and not in the canal. If we only focus on the mouth of the canal, even if it takes another twenty years for the people of the five counties, it will be in vain!"

"How do you say that?" Zhang Jinyan couldn't help being stunned when he heard the words.

The dispute between introducing and rejecting the Jingjing did not start with Zhang Jinyan alone. In fact, as early as the eleventh year of Jiajing, the Neo-Confucian Ma Li proposed to "dug out the canal from the "Cho'erzui" to reach Guanghui".

During the Wanli period, Yuan Huazhong, the magistrate of Jingyang County, specially wrote the "Kai Diao Er Zui Discussion", which rejected the Kai Diao Er Zui plan and advocated "rejecting Jing and drawing springs".

So far, the two sides have been arguing endlessly, so that in the original history, during the Qianlong period of the Qing Dynasty, they argued several times, and finally the Emperor Qianlong ruled that "rejecting the Jingjing and diverting the spring" was the correct solution.

As a result, Zhang Shun opened his mouth and came up with a game of "in the river but not in the canal". How can he convince the public?

Zhang Shun couldn't help laughing and said, "There are two shortfalls in Jingshui, so it's a problem of water diversion."

"One said: The water cuts down rapidly, and the river level will be lower than the mouth of the canal in a few years."

"Second: There is a lot of sand, and the water diversion will silt up the channel for a long time, and it has to be dredged again."

"Both of these are diseases of the Jing water, not the disease of the canal water. Do you think so?"

That Zhang Jinyan pondered for a moment when he heard the words, and couldn't help but admire him: "The king of Qin is really a man of nature, I think about it carefully, and compare it with what I saw and heard in the past, it really is so!"

"It's just that I don't know how to solve this matter, to benefit the world?"

No matter how nice your words are, the key is one sentence, how to solve it?
"The river cuts down and the mouth of the canal is raised. I have a countermeasure." Zhang Shun laughed and said, "It's nothing more than the word 'sinking sand to make up for cutting'."

"What is 'Shensha Buqie'?" Zhang Jinyan couldn't help being stunned.

"Jingshui comes out of the valley, and the drop is too big, and the river flows very fast, so it cuts into the river channel, and the river bed sinks over time."

"Therefore, the water should be slowed down to accumulate sand, so as to make up for the insufficiency of the river bed and balance it."

"This... this... Qin Wang is really a god who descended to earth, making people look up at the mountains and walk in the scenery!" Zhang Jinyan himself is quite familiar with water conservancy, and he couldn't help but turn pale when he heard the words.

Since the Zhengguo Canal thousands of years ago, people have been troubled by the sinking of the river and the excess of clean water and sand. They never thought that there would be people who would think of the method of stopping sinking with sand and attacking trouble with trouble.

"If this is the case, wouldn't it be necessary to widen the river to slow down the water?" Zhang Jinyan knew the meaning of the string, and immediately thought of a specific solution.

"That's right, just because of this, river sand still enters the canal, blocking the canal, and it needs to be cleaned up once more than ten years." Zhang Shun couldn't help regretting.

"It's okay, it's okay, as long as you don't drill Diao'er's mouth again, King Qin's method is already very good!" Zhang Jinyan couldn't help but close his mouth from ear to ear when he heard the words, why do he care about some flaws?

It's just that Zhang Shun thought about it, but he couldn't solve the problem of water and sand separation, so he had to give up in resentment.

In fact, Zhang Shun didn't know that the excavation of the Zhengguo Canal in history was not as simple as irrigation.

Instead, the State of Qin intentionally "used the water to fill the pot to irrigate more than [-] hectares of the brine."

The so-called "Brine Land" is the so-called saline-alkali land in later generations.

The earliest role of the Zhengguo Canal was to attract sediment from the Jinghe River during the flood period and improve the original saline-alkali land.

It turns out that the Jing River flows through the Loess Plateau, and the sediment it carries has a certain degree of air permeability and fertility. The Qin State used the Zhengguo Canal to integrate irrigation, fertilization and soil improvement, killing three birds with one stone.

As a result, after hundreds of years, when people had enough to eat, some of Zhang Shun’s supporters firmly believed that:

The reason why "Qinwang Canal" does not "divide water into four or six and divide sand into two or eight" like Dujiangyan is that Zhang Shun, the "King of Qin", deeply understands the air permeability and fertilization function of Jing's cement and sand, so he deliberately designed it like this, just to Solve the problem of salinization caused by irrigation.

This is exactly why flowers are planted with a heart but cannot bloom, and willows are planted with willows to make shade.

(End of this chapter)