Two days later, Dolgon came to the place where Zhu Changyuan had built the Great Wall. Pen "Fun" Pavilion www.biquge.info

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

The place chosen by Dolgon is quite good, or it can be said to be hidden: the location is chosen in the middle of Fuxin and Jinzhou, near the mountains.

If you take a picture like this, you can escape at any time if someone else finds you.

so as not to cause misunderstanding among the Ming army.

As a mature military general, Dolgon's vision and insight are certainly not comparable to that of a local petty official, and at the first glance of Zhu Changyuan's railway embankment, he dared to be 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 Nima has a big slope, is this built deliberately for the enemy soldiers to climb up?

It was obviously not the Great Wall, and as for what it was, he didn't know.

Dolgon hid his phone in his hand and walked to the entire roadbed like a migrant worker, and was suddenly shocked by the scene in front of him.

"This, this!" suppressed his surprised expression, gradually lowered his breathing, and then muttered to himself: "It's so flat, what is Zhu Changyuan doing here?" ”

A little foreman in the back saw that there were people on the roadbed who were idle and not working, and immediately ran to Dolgon and shouted, "Well, you, why are you not going to work?" ”

Dolgon shrunk his head, tried to squeeze out a constipated smile, and said in his less proficient Chinese, "My lord, I, I, I'll go right away." ”

However, in the Northeast, there are many people who don't speak Chinese well, but they haven't attracted the attention of others.

"Hurry up!"

The overseer yelled and shoved Dorgon into the dump.

Dolgon, like most people, had a pocket and half a bag of dirt in the yard. Then, with great effort on his back, he walked towards the roadbed, like the rest of the peasants.

Dorgon was a burly man with great strength.

But. That's all, if you want to compare who can kill, it is estimated that ten people will not be close to him, but it is better than work, especially this kind of work. He couldn't, not even as good as a thin young man.

Tired and sneered, he resisted half a bag of soil to the roadbed, fell to the designated place, and took the opportunity to take a few photos.

In fact, most of the roadbed section has been completed, and the place where Dolgon is located is only a few minor defect repairs, so the work was completed in just over an hour.

Then, someone drove the roller to "boom" to press down the soil that had just been piled up. The last bit of defect in the entire pavement was repaired completely.

Dorgon was struck by the shock.

The first time he saw the steamroller, he seemed to see a monster, and he pulled his body back in the crowd, as if he was afraid of being eaten by the monster.

Then, seeing that the other people's faces were not different, he gradually calmed down, and secretly took out his mobile phone and took a picture 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?" "Between words. Pointed to the roller.

"Huh?" The young man said in a loud voice, "Don't you know, roller? ”

"Hey, hey!"

Dolgon laughed dryly.

"You've just arrived, haven't you?" The young man had an expression on his face that I understood.

Dorgon nodded.

"I'll just say, there have been a lot more people in the past two days." The lad muttered. "But also, working for one day to give three days of food, who has heard that this good thing can't come?"

"Don't be afraid!" The young man said to Dolgon very sincerely: "Many people, when they first saw this thing, were too scared to look at it, and you are much better than them. ”

Dorgon seems to have found some confidence and superiority. Immediately listened to the waist pole.

"You don't know!" The young man laughed as he spoke, "This roller is okay, when I saw the excavator for the first time, many people were scared to pee their pants." ”

Dolgon slowly got acquainted with the young man, and a lot of things came out of his mouth, not only knowing what rollers, excavators, bulldozers, and graders were, but also knowing the main purpose of Zhu Changyuan's construction of this "Great Wall".

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

Of course, as for why Zhu Changyuan built this road, he still didn't know anything.

Even most of the people involved in the construction did not know what the road was built for.

This is a secret that belongs to the top, and it is not so easy to find out.

Dorgon didn't stay long, and went back empty.

In a little more than a month, the entire roadbed was completed, and it was rolled and leveled, and the height and line fully met the design requirements.

At this speed, Zhu Changyuan didn't imagine, and the next time was to do another thing: paving stone powder.

Generally speaking, a layer of 50 cm of stone powder should be paved on the railway soil subgrade as a waterproof material and a protective layer to protect the subgrade.

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

Although it is not thick and can be dried in two layers, it is time-consuming, and the reason is that the material is not taken out of the ground like soil or stones, but the stones are mined from the mountains, and then the stones are ground into powder and mixed with the prefabricated melon seed slices in a certain proportion.

In technical terms, the amount of work is not large, but the process is troublesome.

Moreover, this thing doesn't mean that you can do it with a lot of people.

There is no way, this kind of thing can only be prefabricated on Riyue Island, and after it is prefabricated, it will be transported to the site by Zhu Changyuan by big ship, and then rolled and paved.

This is all an afterthought, and the thing that is currently hindering the entire construction period should be: bridges.

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

This gap is the bridge.

Although the construction period of bridges can be reduced as much as possible, it is not as infinite as earthwork, but there is a limit.

The reason is that concrete has a setting period.

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

After the pile is formed, it stands to reason that the next step should be to build the column (except for those with cushion caps). However, the construction of the column should at least be based on the concrete strength of the whole pile.

At the latest, four weeks, twenty-eight days later, the next process can be moved.

Then there are the columns, then the cap beams, and finally the main girders on the bridge.

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

The bridge is not passable, everything is nonsense.

However, he will not stop, while building the bridge here, I can lay stone powder there, and after the stone powder is paved, I also need to lay a layer of ballast on top of the stone powder.

Time passed day by day.

Zhu Changyuan goes to the construction site every day, but now he is not like before, patrolling the entire construction site, and 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.

It's not because it affects the entire construction period.

Instead, Zhu Changyuan wants to build several bridge construction teams through the construction of this Daling River, and lay some even very weak foundations 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 at best, and it is not the key to his promotion of science and technology to the whole world and lead the entire Han nation into the modernization process.

He also has a bigger idea in his mind, that is, to build a big project that has never been seen in the past and present when it was placed in the motherland.

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

In that era, it was the construction of such a railway that provided a major artery for the transportation of materials to the north and south of China, and forcibly linked the development of the south, the central and the north.

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

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

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

Then, if possible, in the land of Henan, to the west, a major artery running in the east-west direction was modeled after the Longhai Railway of later generations.

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

For example, there is no harvest in the Shaanxi drought, it doesn't matter! The rich land in the south of the Yangtze River produces countless grains, and if it can be transported to Shaanxi in time, there will be no embarrassment of today's Ming Dynasty.

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

In particular, this railway from south to north.

Earthworks can be said to be no difficulty!

But what about bridges?

It's too hard.

In addition to countless small rivers that do not even have names, there are also a series of large rivers such as the Yellow River, the Yangtze River, and the Huai River.

What to do?

How can the erection of these bridges be completed?

It is impossible to rely on the equipment, conditions, and even funds in his hands now.

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

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

Sometimes, it is even necessary to intercept the flow and divert the route.

The most important thing is to ensure the large span of navigation under the bridge, and to use the world's prestressed concrete.

Indispensable. (To be continued.) )