Take a plane to the Ming Dynasty

Chapter 358

Two days later, Dorgon came to the place where Zhu Changyuan built the Great Wall.

However, he didn't dare to go to Jinzhou or Dalinghe to see it blatantly.

The place Dorgon chose was quite good, and it can be said to be hidden: the location was chosen between Fuxin and Jinzhou, near the mountains.

If you take pictures like this, once someone finds out, you can escape at any time.

So as not to cause misunderstandings by the Ming army.

As a mature military general, Dorgon's vision and knowledge are definitely not comparable to that of a small local official. When he first saw the Zhu Changyuan railway roadbed, he was sure: this is not the Great Wall.

The Great Wall is a fortification with a defensive function. What kind of defensive function is this thing?
Not only is it extremely low, but it also has a big slope. Is this built on purpose for the enemy soldiers to climb up the slope?
This is obviously not the Great Wall, as for what it is, he doesn't know.

Dorgon hid his mobile phone in his hand, and walked to the entire roadbed pretending to be a migrant worker, and was shocked by the scene in front of him, half of his jaw dropped.

"This, this!" Restraining the surprised expression, he gradually lowered his breath, and then muttered to himself in a low voice: "It's so flat, what is Zhu Changyuan doing?"

A small foreman at the back saw someone on the roadbed idle and not working, so he ran over and shouted at Dorgon, "Well, what are you doing, don't you go to work?"

Dorgon shrank his head, tried to squeeze out a constipated smile, and said in unproficient Chinese: "My lord, I, I, I will go right away."

However, in this corner of Northeast China, there are many people who can't speak Chinese very well, but they didn't attract the attention of others.

"hurry up!"

The supervisor yelled and pushed Dorgon into the soil borrowing area.

Dorgon, like most people, took a bag and filled half a bag of soil in the soil borrowing field, and then struggled on his back, walking towards the roadbed like other farmers.

Dorgon is tall and strong.

But that's all. If you want to compare who can kill, ten people can't get close to him, but if you want to compare work, especially this kind of hard work, he can't do it. He's not even as good as a thin boy. .

Tired and humming, he threw half a bag of soil onto the roadbed, poured it on the designated spot, and took the opportunity to take a few photos secretly.

In fact, most of the roadbed sections have been completed, and where Dorgon is located, it is just some small defect repairs. Therefore, it took only more than an hour to finish the work.

Then, someone drove the road roller to "boom and boom" to press down the soil that had just been piled up, and the last defect on the entire road surface was completely repaired.

Dorgon was immediately overwhelmed by this shocking situation.

When he saw the roller for the first time, he seemed to see a monster, and he withdrew his body back in the crowd, as if he was afraid of being eaten by the monster.

Then, seeing that the faces of the others remained unchanged, he gradually calmed down. He took out his mobile phone and took a photo of the big monster in front of him.

"Hey, brother!"

Dorgon patted the shoulder of the young man closest to him, and whispered, "What is this thing?" While speaking, he pointed to the road roller.

"Ah?" The young man said in a loud voice, "Roller, don't you know?"

"hey-hey!"

Dorgon laughed dryly.

"Are you just here?" The young man had an expression that I understood.

Dorgon nodded.

"I just said that the number of people has increased a lot in the past two days." The young man muttered, "But it's true, one day's work gives three days' food, whoever heard that this good thing can't come?"

"Don't be afraid!" The young man said to Dorgon sincerely: "Many people, when they saw this thing for the first time, were too scared to look at it. You are much better than them."

Dorgon seemed to have found some confidence and a sense of superiority, and immediately listened to the waist.

"You don't know!" The young man laughed while speaking, "This road roller is okay. When I saw the excavator for the first time, many people were so scared that they wet their pants."
.
Dorgon got acquainted with the young man gradually, and got a lot of things out of his mouth. Not only did he know about road rollers, excavators, bulldozers, and graders, but he also knew Zhu Changyuan's main purpose for building the "Great Wall".

When he learned that this was only a relatively advanced path, he finally breathed a sigh of relief, called Huang Taiji in the dark, and reported the situation.

Of course, as for why Zhu Changyuan built this road, he still has no idea.

Even most of the people involved in the construction did not know why this road was built.

This is a high-level secret, and it is not so easy to find out.

Dorgon didn't stay too long, and went back in time.
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In a little more than a month, all the roadbeds were completed and rolled flat, and the height and lines fully met the design requirements.

This speed, Zhu Changyuan did not imagine, the next time, is to do another thing: laying stone powder.

Generally speaking, a layer of [-] cm stone powder should be paved on the railway soil roadbed as a waterproof material and a protective layer to protect the roadbed.

In fact, to be precise, this layer of material cannot be called stone powder, it should be a mixture of stone powder and small melon seed slices (that is, stones the size of melon seeds).

Although this thing is not thick, it can be finished in two layers, but it takes a lot of time. The reason is: this kind of material is not like soil or stones that can be taken out anywhere, but stones need to be mined from the mountain, and then ground into stones. Powder, mixed with prefabricated melon seed slices according to a certain ratio.

In professional terms, the project volume is not large, but the process is cumbersome.

Moreover, this thing does not mean that a large number of people can do it.

There is no way, this kind of thing can only be prefabricated on Riyue Island. After the prefabrication is completed, Zhu Changyuan will transport it to the site through a large ship, and then roll and pave it.

This is all something later. The thing that currently hinders the entire construction period should be: the bridge.

Yes, although the entire roadbed has been built, strictly speaking it is not a complete roadbed, because there is a gap about 200 meters long at the Daling River.

This gap is the bridge.

Although the construction period of bridges can be shortened as much as possible, it is not infinitely compressible like earthwork, but has a limit.

The reason is that concrete has a curing period.

For example, according to the process of the Daling River Bridge, the drilled piles are first drilled, then the prefabricated steel cages are placed in the drilled pile holes, and finally, the concrete is poured into the drilled holes, and then a pile is formed.

After the pile is formed, logically speaking, the next step should be to build the pillar (except for those with caps). However, the construction of the pillar must at least increase the concrete strength of the entire pile.

At the latest, four weeks and 28 days later, you can enter the next process.

Then the pillars, then the cap beams, and finally the main girders on the bridge.

Of course, the main girder can be prefabricated and hoisted.Even if Zhu Changyuan saves time and saves time, no matter how compressed the construction period is, it will take at least three months.

No bridges, everything is bullshit.

However, he will not stop. While building the bridge here, I can lay stone powder over there. After the stone powder paving is completed, I need to lay a layer of ballast on the stone powder.

Time passed day by day.

Zhu Changyuan goes to the construction site every day, but unlike before, he patrols the entire construction site. Now he only focuses on one point, that is, the bridge construction of the Daling River.

The Daling River Bridge is the control project of the whole project, and it is also the project that Zhu Changyuan attaches the most importance to.

Not because it affects the entire construction period.

Instead, Zhu Changyuan wanted to build several bridge construction teams through the construction of the Daling River, so as to lay a weak foundation for the construction of bridges across the country in the future.

Because, according to Zhu Changyuan's conception, the current Fujin Railway is only a pilot project at best, and it is not the key for him to promote science and technology to the whole world and lead the entire Han nation into the process of modernization.

He still has a bigger idea in his mind, that is, to build a large project across the north and south that has never been seen in ancient times, as it was in the era of the motherland.

In the previous life, the name of this project was the Beijing-Kowloon Railway.

In that era, the construction of such a railway provided a major artery for material transportation to the north and south of China, and forcibly connected the development of the south, central, and north together.

It is no exaggeration to say that at the time, the Beijing-Kowloon Railway advanced the development of the motherland by at least ten years or more.

And Zhu Changyuan also had such a big dream in his heart.

That is, build a large railway from south to north, and then run it full of trains pulled by steam engines, connecting the materials of the whole of China from south to north.

Then, if possible, connect an east-west main artery to the west of the Henan land, and build it after the Longhai Railway in later generations.

In this way, many problems can be solved in the future.

For example, there is no harvest due to the severe drought in Shaanxi, it doesn’t matter!The affluent lands in the south of the Yangtze River produced countless grains. If they could be transported to Shaanxi in time, the embarrassment of the Ming Dynasty would not exist today.

However, although the wish is great, unfortunately, the road ahead is also very difficult.

Especially, this railway from south to north.

It can be said that there is no difficulty in earthwork engineering!
But what about bridges?

too difficult.

Apart from countless small rivers without names, there are also a series of large rivers such as the Yellow River, the Yangtze River, and the Huai River.

How to do?
How can the erection of these bridges be completed?

It is impossible to complete it only by relying on the equipment, conditions, and even funds in his hands now.

The construction of the bridge is very difficult and unimaginably large.

Not only must there be sufficient power allocation and various resource allocation, but also various talents and machines to build cofferdams in the Yangtze River and drill holes in the Yellow River.

Sometimes, it is even necessary to divert the flow.

The most critical thing is: to ensure the large span of navigation under the bridge, the world's prestressed concrete should be used.

Indispensable.

(End of this chapter)