Chapter Three Hundred and Thirty-Five The Mohenjo-Daro Baths Project
After the disappearance of the Houtian clan, the heavy rainfall it brought will not disappear. Generally speaking, after the beginning of winter, the autumn water gradually disappears, but this year is the peak of the flood. Between heaven and earth, the snowy mountains in the west begin to melt into rivers, and the rivers are affected.
The disaster is more powerful than the big river, and a large amount of rainwater brought by the Nanhai Houtian clan is injected into the tributaries of the river, so the rain area increases and the rain period is extended. Therefore, the water level of all the tributaries suddenly rises and pours into the river in a short period of time. Once it exceeds the river bank
, "rain floods" will occur.
For example, this is like a traffic jam on a highway.
"So it needs to be diverted, I call it flood diversion."
Yuzai told the great wizard in detail: "There is no way to do this. If the flood is not diverted, the flood will turn into evil and the south will be wiped out."
The great wizard was thinking, but he also knew that there was not much time for him to think carefully. This time, the vast areas of the Moss Wilderness and Xun Mountain would be abandoned. After a fierce ideological struggle, the great wizard agreed.
Yuzai's proposal.
After all, he doesn't have any good methods for controlling water.
"If this flood can be controlled, then...as long as you can do it, there will be no problem for the Xunshan clan to lose a large area of land in the west of Shiqianyuan."
"So, if this flood diversion ends, should we follow the example of the Central Plains in building dams?"
The great wizard thinks this way. The water barrier method can ensure the safety of both sides of the river. Otherwise, if floods come every year, wouldn't everyone stop living in this homeland? The habitation of tens, hundreds, or even thousands of years would just be abandoned.
?
Obviously a hundred years ago, things were still peaceful.
"It's a celestial phenomenon. The celestial phenomena are getting warmer."
Yu Zai gave an answer.
"The climate in the world is rising, so the snow in the mountains in the western sky is shaking. The source of the flood is thus untied, and more rivers appear, which causes the water levels of the rivers in the east to gradually rise."
"This is one of the reasons, but it is also the most important reason. As the climate of heaven and earth warms up, the activities of celestial phenomena will become more intense."
Yu Zai said to the great wizard: "This is the result of my observation..."
This sentence was half true and half false. Of course, Yu Zai thought that we could indeed use this torrent event to complete the construction of "Chichen Itza". This thing is the square-headed pyramid of the Mayans. During its construction,
The main purpose is to observe astronomical phenomena and astronomy, which was probably completed in more than 400 AD. Of course, it later became a place for worshiping and dancing to great gods.
"If you build a dam, I don't recommend doing it so hastily."
Yu Zai gave an answer that stunned the great wizard and all the wizards.
"why not?"
A wizard asked in the Moss Field, and was very puzzled: "It is said that the water barrier method in the Central Plains has stabilized the river for eighty-nine years. The raging current of the river is far smaller than that of the river. We built a similar embankment to defend the south.
Fu Qianyuan, why not?"
"We can even build Chongyong Fortress, but why can't we build a large embankment?"
"Because the technology is not enough."
Yu Zai explained: "The long embankments are mostly made of earth and rocks. It is impossible to withstand the flood for a long time. And now that the meteorological activities are becoming more and more intense, the flood may be more but not less. Flood control is a long process."
The project is not something that we tribal leaders can just slap on the head and complete."
"It is necessary to use many methods together. The water barrier method should be a way to buy time, not a way of evasion chosen for peace of mind. The more you run away, the more water will flow towards you. If the dam is not enough
If it is strong, then when the levee breaks, the power of the water will be several times greater than in the river."
"Therefore, the dams must be repaired, but they cannot be repaired hastily. If they are built hastily, they will eventually cause greater damage."
"There needs to be a levee, a dam, a flood diversion area, and a water gate."
The wizards looked at each other, and someone asked: "That means the water barrier method is indeed effective."
Yu Zai nodded: "Of course it is useful, even if it is to block water directly, it is useful. It just depends on how to use it. Blocking should be used in large swamps and on the edge of large lakes. In places where water is easy to overflow, large buildings should be built.
The dam raises the water level that the lake can carry..."
"Big rivers have a better temper than big rivers, and the torrents are mostly rainwater, so we can block water, discharge floods, impound them, dredge water flows, clean up river channels... There are some things we can't do, and we can only wait for more powerful people to help.
."
"But there are some things we can do."
"If you only block the water without venting it, the water will use the river embankment as a borrowing point, and its potential energy will not be dispersed. So the water will accelerate here one after another, and the movement will become bigger and bigger, and finally
Maybe the Southeast Wilderness will be the first to suffer, and then we will be."
"And when the levee breaks, the important problem is the bottom. The pressure of the water here... No, the power of the water is many times stronger than the surface. The bottom of the levee cannot bear it, so it breaks, just like cutting down a tree.
No matter how strong a tree is, if its roots are dug out, then even if it reaches the sky, like a big wooden tree, it will fall on the shore of the East China Sea."
"And the higher the levee is, the greater the water force below it will be, and the roaring of the river will be louder, so the risk of the levee collapsing will be greater!"
After listening to what Yuzai said here, everyone probably understood the crux of the problem, and such a huge project is indeed much more troublesome than Chongyong Fortress!
And Yu Zai also knew that water control projects must be constructed, so except for the major meteorological observatory...
Wonder, Mohenjo-Daro Bathhouse +1!
[Riverside floodplain cells with large bathhouses are protected from floods. After each flood damage is mitigated, the faith value generated by the floodplain cells belonging to this city will be +1.]
This thing is the most practical large-scale flood storage project in ancient times!
But Yu Zai has one more thing to say.
"If the land in the south is diverted from flooding, a lot of arable land may be unusable..."
However, before he finished speaking, the great wizard interrupted Yuzai.
"Treat it first! If the cultivated land is gone, then reclaim it!"
The great wizard made a decision and immediately ordered all the tribes in the north of Fu Qianyuan to start evacuating from here.
The wizards in the Moss Wilderness, the Northeast of Shiqian Plain, and even those living in the northern and central areas of Daze went back nervously. From now on, the tribes will completely evacuate here, and the great wizard ordered the wizards in the central area to
The tribes must accept the refugees and allocate the land they used to migrate to these tribes to live in.
Before the advent of plows, oxen, and compost retting, most of the southern tribes practiced slash-and-burn farming, or fire farming and water plowing. Even tribes in many places in the Central Plains were like this, such as the Huai River where the Akafang clan lived.
Nearby, the phrase "Every time there is a land, it is a plan to abandon the old and make new ones", which is the best description of the tribe's search for new land.
Therefore, each tribe has at least one or two relocated lands. They moved here, and when the original land regained its fertility and could be cultivated well, they had to move back. But now, everyone no longer moves, and those lands also
It became a reserve land and was cultivated.
"This time is a catastrophe in the south, and we must get through it together."