Chapter 533: Look at the picture and speak

After dealing with the Liao people and solving the Xiongzhou crisis, Su You reported the situation to Sima Guang and continued to lead the detection team to operate.

This river investigation was carried out for more than a month, and the science and engineering teams sent to various parts of Hebei reunited in Yingzhou.

Then comes the complicated and difficult statistical calculations.

However, this matter was handed over to Shen Kuo and Chen Zhaoming, and Shen Kuo also had to draw a fine contour map of the entire Hebei Yellow Flood Area.

While Sima Guang and Su You are sorting out local hydrological historical materials, Sima Guang also has to supervise Hebei winter wheat to rush to plant, and Su You has to supervise and promote the cash-for-work program.

By the end of November, a lot of work had been effective, and the whole of Hebei, more than 10 prefectures affected by the disaster, relied on timely transportation, and Sima Guang and Su You supervised effectively, and did not cause serious trouble.

However, to restore the old state, it is necessary to wait until after the wheat is ripe in June.

Moreover, the Yellow River has been rerouted, and almost all previous river control projects have been scrapped, and new projects cannot be delayed.

Zhao Ji couldn't wait any longer, so let Sima Guang and Su You return to Jingshi immediately.

So the two had to lead the engineering team back from the waterway and continue their work on the ship.

All the way, back to the capital, it has been two years of the Great Dynasty Meeting.

However, when the important ministers returned to Beijing, they also carried the people's feelings, political conditions, river conditions, and military conditions of Hebei.

Sima Guang and Su You, combined with their power in the court, are already well aware of the current court pattern.

Su You even had a suspicion about Zhao Ji, whether it was a deliberate arrangement to send Sima Guang out to patrol the river, so as to prepare Wang Anshi for the throne.

After all, both of them are Hanlin scholars, and every time they disagree, if they want to mention one, they must press one.

Yes, after only a few months of going out, Wang Anshi's influence on Zhao Ji has increased greatly, and the most important thing is that except for Fu Bi, Han Qi and a few other old ministers, everyone is full of confidence and expectations for Wang Anshi.

Even Fu Bi personally persuaded Su You to cooperate with Wang Anshi as an elder, although he had doubts, he was still holding a fluke.

Under such a premise, Su You can only keep silent and protect himself first.

At the court meeting, Sima Guang presented the 30-volume "Consultation on the River Situation": "Your Majesty, this is the investigation of the minister and Su You for several months, and there is also the "Beiliu Tujing" made by Shen Kuo and Chen Zhaoming. After our investigation, the old channel of the eastward flow has been silted up, and the volume of the two rivers is insufficient to divert the floods, so the proposal of returning to the river is no longer feasible. ”

As soon as this theory came out, the DPRK and China were immediately shocked.

Song Changyan, a staunch supporter of Huihe, has been lobbying Wang Anshi for some time, and Wang Anshi has agreed in principle, and is ready to take this as his first practice as a governor and make achievements.

Now Sima Guang said that the proposal to return to the river is no longer feasible, which is to completely overturn his insistence.

So he came out: "Cheng Fang, the servant in the prison of Tuntian, discussed with the ministers before, and said that he returned to the river, and now he is playing, from the discussion of Master Sima and Su You, it is inconsistent, inviting the powerful, and begging His Majesty to reprimand him." ”

Su You almost fell back in anger, Lao Tzu is only a third grade, "Ning Dengying, not a prison", he is the most bitter judge in the court and the general is a prisoner, how can he become a powerful man?

Out of the column said: "Cheng Fang's proposal to return to the river before is because the data in his hand is inaccurate and his thinking is not fine, Your Majesty, please let Shen Kuo unfold the map, so that he can answer the doubts of the ministers one by one?" ”

Zhao Ji actually hopes to return to the river in his heart, and the diversion of the big river, no matter how you look at it, it is the king's immorality, so that he can return to his hometown, which can be regarded as an explanation.

Now that I came back from the investigation, it turned out to be such a result, and I couldn't help but be disappointed, and I wanted to know what was going on, so I said: "Quasi-play." ”

The huge map unfolded, and the ministers realized that the value of this map was not as simple as the rough map in the past.

On the map, the river and sea areas are marked in light blue, and the four colors mark the regions of each state capital, from the coastline, a circle of contour lines, you can see the trend of mountains and rivers, and the geography is high.

The place names are well labeled, and there are various symbols.

In the lower left corner of the map, there is a symbol legend, and on the periphery of the map, there are black and white scales, as well as vertical and horizontal longitude and latitude lines.

Su You said: "Because of the rush of time, the map work is not done carefully, and it is still rough, but I can already see a rough idea." ”

The ministers were almost knocked down by thunder, this is still called rough, and the former officials of the Yu Department are no longer alive.

Su You pulled out a long, pointed-toe wooden stick from the scroll at the bottom of the map, and there was a black line in the heads of the ministers, all saying that Su Mingrun was fine, and now he was a teacher.

Su You pointed to the map and said: "Your Majesty, Zaizhi, please see, all the ministers, this river on the map is the north of Wei, from the north of Wei, to En, Hebei, and Qianning into the sea, which is called the north flow. ”

"And this river is the eighth year of Jiayou, the river is determined by the sixth Si of Wei, forming two strands, from Wei and Endong to De and Cang, and entering the sea, which is said to flow eastward."

"Song Changyan's strategy is to put it on the west of the two stocks, and make it flow eastward."

"After the east flow is getting deeper and deeper, and the north flow is shallow, the north flow will be stopped, and the Yuhe River and the Hulu River will be separated from the Yellow River, and the troubles to the west of En, Hebei, Shen and Ying will be relieved, so that the old course of the Yellow River can be restored, and the Yuhe Caoyun will return to the old view. Deputy Supervisor Song, is that right? ”

Song Changyan was looking at the map and pondering, and when he heard this, he suddenly raised his head: "Yes, yes, the Su case verdict, judging from the map, this proposal is not unfeasible." ”

The case is also responsible for river and canal affairs, and Song Changyan is commensurate with this position for Su You.

"This plan looks good, but after careful measurement, we found that there is a huge risk. ”

"Look here, this kind of line, we call it a contour line, based on sea level, every five meters of height, connected in a line."

"The vertical height of the site from sea level is what we call 'altitude', and here is the elevation of the entrance of the Ergu River, the sixth Si of Weizhou, and here, the elevation of Shanghukou in the north of Weizhou."

"Compared with the two, the entrance of the Ergu River is three meters higher than the mouth of Shanghukou, ah, it is almost a zhang."

"Don't underestimate this zhang, if you break forty steps, think about how much water it will be? How much more should it be a river 200 paces wide? ”

"After our calculations, the Ergu River can hold up to 40% of the Yellow River's water, and if we follow Deputy Supervisor Song's plan, we need to wash the existing channel of the Ergu River to a depth of three meters, which is equivalent to Shanghukou!"

Song Changyan said: "Bunching water and flushing sand has existed in ancient times, and now the Bianqu Canal is maintained, and this method is used for four hundred miles." Rushing down three meters, ah, one zhang, what's so difficult? ”

Su You said: "The old sand has not been exhausted, and the new sand has come again, and now the sand content in the middle and lower reaches of the Yellow River has reached 44 percent!" ”

As soon as these words came out, there was another uproar in the DPRK and China, and this data was terrible.

Su You asked the attendant to fetch three glass tubes: "Don't be too frightened, please see, this first one is a water sample collected from Bianjing; the second branch was collected by Shang Hukou; The three branches of the earth were collected by Haikou. ”

"In fact, 44 percent of the sediment cannot be washed into the sea, and almost half of the fine sand can enter the sea, and the remaining coarse sand is the main culprit that causes the silting up of the Yellow River."

I heard the sound of relief in the main hall, after all, the Yellow River is on the edge of Bianjing, and it is not that it has not been broken, if 44 percent of the sediment is all silted up, then it will be okay.

Su You continued: "The degree of sediment accumulation is also related to the slow and rapid flow of water, which in turn is related to the drop. ”

"There is not much difference in altitude between Shanghukou and Ergu River, so the longer the river, the slower the slope of the river, and the slower the water flow speed at the same depth and width, everyone should understand this truth, right?"

The courtiers are all smart people from Jinshi, and this principle is still easy to the same.

Su You said: "Judging from the map, the same is true, the Yellow River broke and was diverted this time, which is to choose an easier channel, and the rerouted river channel is 100 miles shorter than the original river. ”

Song Changyan said: "But these can still be solved by collecting water and sand washing, and narrowing the river through the Ergu River, which can also speed up the flow rate and avoid silting." ”

Su You said with a smile: "Deputy Supervisor Song has gotten into the tip of the horns, since the old way can be forced, the new way is not the same as the one that can be forced?" ”

After speaking, he pointed to the map: "Here, from Leshou to Qingzhou, there is a straight waterway, and according to the method said by Deputy Supervisor Song here, the river can also be shortened for dozens of miles, reducing the possibility of sediment accumulation in this section." ”

Song Changyan was speechless.