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Free Web Novel,Novel online - All in hlnovel.com -> Wuxia -> incredible mountains and seas Chapter 517 Internship in the Great Flood Control City (Part 2)
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- An overflow dam is a dam whose crest can discharge floods, also known as a rolling dam.
The overflow dam is generally made of concrete or masonry However, there is no reinforced concrete in the current era, but this does not prevent the people of Shanhai from using their wisdom.
If the technology is not enough, sorcery comes to make up.
The materials are incomplete, and all parties support.
As long as the tribal people are united, you can get any kind of material.
The workers in the mine tried their best to deliver the needed stones to the Great Flood Control City.
"This is our new method. To build a huge flood control project, it is not enough to use the original earth and rock, even rammed earth, composite soil, and stone and wood embedded in the city!"
"What we have to face is the water of the great river, not the residual flood. And Dazai told us the firing method of Sanhe clay, and we got inspiration from it, and then we have something"
The wizard of the Yaoshan clan narrated that he gave up the right to make a grand introduction to Yu Zai, and Yu Zai did his part.
Add a wooden barrel to the iron pot, put glutinous rice and water, simmer the glutinous rice to make juice, push and stir with a rake at any time, do not stagnate, then use a ladle to test its thickness, and take it out for storage Reserve in the crock.
? Blending glutinous rice juice with lime slurry is called pairing slurry.
Then dissolve the lime with water to dissolve it evenly and remove impurities, then add the thick glutinous rice juice into it, blend and stir well.
"Illustrations of He Qi": For every 40 jin of mortar, use two stones of glutinous rice and four liang of alum.
"This is glutinous rice lime slurry."
Yan Zai walked to one of the piles of earthen vats on the side, where there were still people working, and the so-called lime slurry was inside.
This is the most luxurious adhesive in ancient times, and its strength is no less than that of modern concrete. If it is not for the construction of some huge and important project, it will not be used at all.
"The prerequisite for using this thing is rice production, that is, there must be a lot of surplus food."
Yan Zai looked at everyone: "Food is always the foundation of everything."
"The Dajiang overflow dam is the first line of defense in the face of major floods. Although there is still a third of the flood diversion area in front of it, it is still the main force affected by the flood."
"And it is also the key to the first flood discharge. With it, all the subsequent water conservancy facilities can be linked."
Therefore, on it, the cost of materials cannot be saved at all.
Grain should be used wisely. As for why cement is not made, it is firstly limited by manpower and the scale of firing, and the firing of cement requires a higher temperature, and now only the Chigata Blacksmith Shop has such conditions.
Secondly, there are issues of strength and technical level. For example, it is best to use volcanic ash and lime for firing cement in ancient times. However, where there are volcanoes in the south, cinders must be used instead.
It happens that the fire temperature of coal is also higher than that of charcoal.
However, the roads are impassable and transportation is inconvenient. Even if coal is transported from Biyi Wilderness, the amount and time required are completely disproportionate, unless there is a giant clan to help transport it.
The reason why cement turns into hard lumps after adding water, and the reason why sand, gravel, and steel bars can be reliably bonded together is because calcium silicate hydrate provides the required strength.
And the calcium hydroxide that comes with it, in fact, because of its congenital osteoporosis, it is easy to cause concrete leakage, penetration, and cracking
Therefore, the firing technology still needs to wait for a while, and it does not mean that the firing will be successful.
Although some technical barriers are very low, as the saying goes, it is difficult for a clever woman to cook without rice.
But Yan Zai thinks that time will not be too long. Now that the blacksmith shop is separated, the equipment is handed over to Ah Hong, the ceramics are given to Xiong Tao, the turner is given to Xi Zhong, the gunpowder is given to Yan Pan, and civilian and combat tools are given to Yan Liang. Wait for a group of friends to share.
Yijun can concentrate on studying primitive chemistry and the like.
In ancient Roman times, the materials used for primitive concrete were clay, gypsum, and lime. volcanic ash.
In the Lingjiatan ruins in ancient China, there were also operations similar to concrete, such as digging trenches to fill with burned soil, and wooden bones supporting mud walls. The technology is applied to the Great Flood Control City.
Although it is impossible to have steel bars now, it is entirely possible to use cement as the outer protection of the Shicheng Dam.
And the problem of coal must be solved, not to mention the growth of the ceramics industry, the smelting of cement, iron and other items, coal will become a very important thing next.
This is why Yan Zai must open up the thirty-six wildernesses, including the seven wildernesses in the land of Shangliang.
EveryoneIn the overflow dam, there is a huge slope in the distance, which is a specially rammed area to relieve floods. It is a large earth embankment, which is divided into three parts, namely, the thread embankment (constraining the river waterway), and the lattice embankment. (the grid area behind the embankment), Yaodi (the embankment of earth and stone far from the river) is still under construction, and the Hongshui Monument stands here.
Standing on the flood wall of the flood control city, the wizard of the Yaoshan clan specifically mentioned the problem of the foundation.
Chongbo's embankment collapsed from the foundation
"Look at the big load!"
The wizard of the Yaoshan family explained the structure of the overflow dam one by one to everyone, and from time to time let the concubine play more. The cement and glutinous rice lime mortar mentioned in it were naturally the key points to Yijun.
Yijun's spirit was flying wildly.
Danzhu was very unhappy.
When you need someone, you are Xiao Honghong, and when you don't, you are the owner of the factory.
What a spectacle, this thing is much more powerful than Chongyong Fortress!
This is a "spectacle". Specifically speaking, the Great Flood Control City is a building complex composed of an overflow dam plus numerous flood control facilities, dams, and canals. Because it looks like a city from a distance, it is called "Flood Control City" ".
"However, the overflow dam is now built. There are only two areas and a total of fifteen water holes. Only seven of them have been completed now"
"After the overflow dam, there are three giant canals (spillways), and then there are nine water gates (culvert gates). The reason why there are nine gates is because the emperor came out of Tanggu and divided the nine rivers"
"However, the Three Giant Canals are still under construction, as is Dapo. This is the second and third projects, and the Nine Water Gates is the fourth project. It may take a lot longer. Now only one giant gate has been repaired."
That's right!
Šu Zai muttering!
All his grandma's is a tribute!
It's just an auspicious picture!
But having said that, asking the emperor to protect this dam is like worshiping Confucius in the 21st century Chinese exam, and offering sacrifices to Zhang Tang in the legal exam. Although it is a professional counterpart, but
Don't you see, before the exam, I worshiped Confucius, the old master ate apples and senbei, and he could smoke a Huazi by the way.
Wen Ming followed everyone, and Chong Bo gave them supplementary explanations. Wen Ming's excited hands were shaking, and he couldn't hold the board.
To be able to participate in the construction of water conservancy projects of this level, this this!
From now on, if you go out to submit your resume to find a job, you must not hang your nostrils on your forehead!
The Qi practitioners on the side, as special advisors, murmured to each other, saying that Liang was a sincere person, and they shouted that they did not understand.
"The nine big water gates are where the flood is led out. When the water level of the big river does not rise, canals can also be built to divert water"
"In this way, at any time, there will be sufficient water conservancy available in the south."
Chong Bo explained to Wen Ming, seeing Wen Ming drooling, he was immediately relieved!
This kid is like me! How can a woman have fun with water conservancy projects!
"Tuo, Sui, open the No. 1 water gate!"
? Shujun demonstrated in the distance, Tuo and Sui had already called many people, and started to open the first gate of the nine water gates with a huge winch wheel!
Behind the big water gate is the water network from the fifth to the fifteenth stage!
These water networks are composed of countless guide canals and control canals, as well as various water conservancy facilities, which transport the water to the areas where they should go!
Although now, there is still just a wasteland!
The giant gate rumbled, making a shocking sound, and as the gate was opened, in Wen Ming's eyes, there was a new era of flood control coming soon!
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