From Chief to Ball

"Wait until everything is done, then it can be regarded as being obedient to others. Since we want to live in Xiacheng forever, we must leave something for the children, don't you think?"

After a lot of agitation, the leaders were a little moved. In this way, the amount of work is actually not too large.

"Just one thing, this matter is related to the interests of all clans, so this cannot be regarded as expropriation of corvee, everyone must participate, and the food is paid by each clan. The only promise I can make is to let this year's wheat one acre Twenty catties more!"

"After this month's work, the rest will be used as corvees and dug in batches. Leaders, let's talk about it now as if we are in the meeting."

Several leaders looked at each other, nodded and said: "Since all the clans benefit, then dig. It's only half a month's work, and it's not time to weed. We bring our own food. Ji Xia doesn't care about these things." , as long as you divide how much each clan needs to dig.”

Seeing that everyone agreed, Chen Jian felt relieved.

Water conservancy projects do not happen overnight. It may take five years to complete all the plans on silk.

However, water conservancy projects continue to have extremely high organizational power. Before seeing the huge benefits of irrigation, Chen Jian's use of the power of the city to drive corvee may cause dissatisfaction.

The reason why they are so anxious is that apart from worrying about this year's flood and drought disasters, they also want to use the last afterglow before the disintegration of the clan to complete such a project.

It is inevitable that the family replaces the clan. Once harvested, the example of Mu Ma and others will cause a chain reaction.

And disintegrated into a family, the corresponding organizational strength will also decline, and it is impossible to continue this large-scale almost unpaid labor.

Only by being organized together can water conservancy be built on a large scale, because water conservancy projects are a system, and it is not just a family unit that only cares about the canals in the fields.

Besides, when the time comes, the land will be scattered, and the canals will not be able to irrigate all of them. Those families who cannot irrigate them will always be dissatisfied and feel that their efforts are wasted. too late.

As long as the clansmen can see the results of the water conservancy within a year, it will be much easier to organize in the future, and the rest of the project can be completed in batches, which will not hurt the city, and will form a customary way of building water conservancy. Habit.

Chapter 72 Struggling with Heaven and Earth, Boundless Fun ([-])

What Chen Jian and the leaders said was very simple, but the actual operation was much more troublesome, and he didn't know much about it.

In the overall conception, the screw island acts as a flow diversion, controlling the water flow by utilizing the difference in the direction of the upper and lower layers of the water flow.Ideally, when there is a drought, most of the water flows from the deeper river near Xiacheng; when the weather is flooding, most of the water flows from the shallower river on the south bank of the Caohe River.

The diversion canal on the north bank also needs to use stones and earthen baskets to build water diversion nozzles to ensure that water flows directly into the diversion canal during droughts.

The flood discharge channel on the south bank of the Caohe River also needs to be prepared in advance. Chen Jian has already checked there. The most difficult thing to dig is a small rock mound. Just come out.

The water drawn from the diversion canal forms a small artificial lake to store water in the depression, ensuring that the level of the artificial lake is as high as the river, and dams are built around it, and the water level is higher than the surrounding farmland by using the drop.

Under normal circumstances, the water level of the irrigation canal is slightly higher than that of the field. When constructing, it is not possible to dig a pit directly, but to dig a shallow pit, and pile the soil on both sides to form a concave canal.

The overall plan doesn't seem to be troublesome, but it's really terrible to implement it. Chen Jian has been planning this matter from the first time he saw Luodao to guiding the people to plant it, but he only solved the most important difficulty a few days ago. .

The biggest difficulty is not people and organizational strength, but measuring tools and leveling tools!

The height difference of the canal is the most important part of the whole project, and the most difficult water division problem in theory is solved by God because of the existence of Luodao.

Now relying on the simple square tool, what can be determined is that there is a drop of about two meters between the diversion canal and the artificial lake. Other than that, it just feels relatively flat.

But at a distance of a thousand meters, the eyes no longer work, and a slight error will cause the canal to fail to flow.

Just like a math problem, the only condition that can be determined now is the height difference between the grass river and the depression, and the rest must be solved bit by bit.

After confirming the only one, the spring plowing in Xia City was basically completed. Before the civilians, slaves, and wild folk settlements in Xia City had time to rest, all the clans started digging the canal again, and even the new army stopped. Train, join in the digging.

In addition to the garrison left by Yangguan, more than 5000 men, women and men, as well as slaves, gathered between Caohe and the depression.

The high slope of the river bank was not moved for the time being. It took four days to dig an artificial canal of more than 180 meters long and six meters wide, and then surrounded the depression with a simple embankment of rammed earth.

The place where the diversion canal connects to the Caohe River was not dug directly, but two gates were first dug about ten meters away from the natural embankment, and a small bridge was made of wood and rammed earth above the gates. The overall water intake is similar to a large water pipe.

Below the gate is a ditch deeper than the river surface, in which stands a large pine tree surrounded by three people, covered with turpentine oil, carved into an inclined convex shape.

The place where the water is diverted to the canal is very narrow, just a concave shape, but it is very high.Usually when the water is not big, the river water can flow from the wide ditch through the narrow concave shape into the ditch.

Once the water comes out, or the height of the river exceeds the embankment of the depression, the pine wood will be floated, pushed by the water, and just stuck on the groove of the water diversion to close the water diversion, and it can only be stuck when the water level is extremely high, because The pine wood floats on the water and automatically adjusts according to the height of the water.

In this way, when there is a flood, the pine wood will block the gap, and the tribe can easily block the embankment behind with stones. Otherwise, it is impossible to block the burst embankment for flood discharge with the current tools.

The simple buoyancy principle sluice is the first semi-automatic facility in Xiacheng. The people of the clan don't understand why, they just follow Chen Jian's request. It doesn't rain, and the water is shallow in spring. What are the thick pine logs floating in the gutter for.

After the completion of the simple automatic buoyancy sluice, Chen Jian took several leaders, cut the hemp rope that supported the silk flowers, and performed a vulgar cutting ceremony. The dug canal flowed to a low-lying land a hundred paces away.

While waiting for the artificial lake to be filled, Chen Jian first led his people to dig a deep canal to make sure that water could flow in.

When the lake was not completely filled, the dikes were opened, and the [-]-step canal was filled with water, and then the dikes were blocked. After the water flow stabilized, the water surface of the [-]-step can be regarded as completely straight.

Tie a wooden stick to one end of the canal, and tie a hemp thread close to the water surface. Yuqian ran to the other end, inserted a wooden stick, and straightened the hemp thread. The height from the water surface was the same as Chen Jian's side. A line is a horizontal line.

Based on this line, measure a height of two meters, which is the height of the rammed earth layer at the bottom of the diversion canal after the lake is filled, about one foot above the ground.

The planned irrigation canals are about [-] steps long, with each side separated by [-] steps.The drop is one foot every five hundred steps, so as to ensure the normal flow of water.

One hundred steps and one measurement, relying on the natural level of the water flow and the height difference of the wooden stick after stretching the twine as a reference, can basically guarantee the normal flow of the water flow.

When an accident happened, the tribesmen felt that the ground was flat, and that they only needed to dig out ditches as required to allow the water to flow by themselves.

But after measuring, they found that the ground looked flat, but in fact it was uneven. Even if they didn't understand it, they knew the reason why water flows downhill. Looking at the wooden sticks and twine, they thought that if the earth's surface As a reference, I am afraid that the water will not flow for five hundred steps.

The canal used for reference does not need to be very wide, and the distance of [-] steps can also be measured by looking at the mountain with a piece of wood floating on the water, using three points and one line.

Chen Jian led the older children of the school to dig out the canal for height measurement along the place where the canal was planned to be dug. After introducing the water, he set up a wooden stick every [-] steps and tied the twine.

The seemingly flat land has a huge drop at a distance of 5000 meters. Some places may need to dig down about two steps, while others need to be one step above the surface.

The E-strider who was on the sidelines looked at the densely packed wooden sticks and guide wires on the ground, and thought that it would be very difficult to build such a project in E City... After thinking about it for a while, he shook his head with a smile, not that it was difficult, but not at all. possible.

He was confident that his mother's arithmetic might be on par with Jixia's, but she was much worse in terms of arithmetic.

He knew that he had to learn a lot, but he never thought that a few pieces of wood and a few balls of twine would have such an effect.

After Chen Jian finished measuring, E Strider felt that he understood that it was done by relying on the water level. When E Cheng built a house, he would also use a long water tank to measure the level. The principle is very simple, but he felt that he must have never thought of it.

After finishing the hardest part, those anxiously waiting tribes finally got their task. The first canal was divided according to the population of the clan, and Chen Jian commanded all the corvees and slaves to take charge of the longest section.

On average, each person is only responsible for one step. If only men and slaves are counted, it is less than two steps. This is already the simplest place.

But the simplest work can also be used. Chen Jian divided the earliest captured slaves with similar languages ​​into six groups, 60 people in each group, 25 males and 35 females, because the number of female slaves in the first batch was more than that of men.

Six sections with basically the same amount of work were selected and distributed to these slaves, and they were clearly told that whoever completed these six groups first could get rid of the status of slave and become a slave farmer.

After becoming a slave farmer, there is no surname, only a first name, but they can be regarded as people rather than things, and they are directly under the jurisdiction of the city. They are no longer forced to work, but use the land to tie them to the land and obtain nominal freedom.

The 60 people who became slave farmers could allocate [-] mu of land from the public property for them to plant. They could also borrow cattle from the city, go to the market to buy goods, and even build their own houses outside the city.

However, half of the income from these lands belongs to the public property of the city, and they also have to bear labor.

Even under such harsh conditions, these people who have been slaves for a year are full of energy, at least better than being beaten and whipped every day, at least they can lie on the grass and bask in the sun when they are tired.