Datang has also been precipitating on the railway for so long, and there is still no shortage of relevant professionals.

As an engineering unit, it is currently the only engineering unit that has been formed.

As the division commander, Qu Tuquan naturally needs to run a route, of course, Qu Tuquan's time is also very limited, he must return to the camp within two months, and then formulate a complete construction plan.

What do you say? What else is needed for this?

In fact, it is very simple, building a railway is the same as building a road, it is not enough to build it all the way, because there is always a need to erect some bridges or tunnels in the middle, and the time required to erect bridges and tunnels is completely different.

In order to complete the project as soon as possible and shorten the construction period as much as possible, the general construction plan is to send people to build the bridge at the same time as the start of construction, so that the construction of the bridge can be completed in advance.

In layman's terms, if construction starts at the same time, the time saved is probably the time to build a bridge.

But for a railway line with a total length of more than 3,000 miles, how many large and small bridges need to be built along the way?

Between two points, the straight line is the closest, this is the truth that everyone knows, and the construction of a railway, a project with a huge amount of work, is undoubtedly the best result of taking a straight line.

But the cities along the way are not arranged in a straight line, and the first half of the first phase of the project is easy to say, although there are many bridges, but the whole is easy to say.

Further west, there are curves, mountains, bridges, and terrain everywhere that can make people doubt life.

In a section of about 300 miles in a straight line, it is necessary to build a railway more than 500 miles long, and it is not an exaggeration to say that there are 18 bends in the mountain road.

After this trip, Qu Tuquan's face was full of worried looks.

Although a large amount of machinery and equipment has been invested, the construction of the railway still requires a large number of manpower to complete, not that the equipment invested can be completed with only a small number of personnel.

It's not as easy as building a concrete road, the truck can just pour the material on, and then the roller can roll it over.

The construction of the railway not only needs to deal with the roadbed, but also to deal with the balance, at least the deviation can not be too large, in addition, the modular construction, although the labor is greatly saved, but the buckle or something, or need to be completed manually.

200,000 people, building this railway of more than 3,000 miles, according to his own experience, plus what he saw and heard along the way, Qu Tuquan probably had a time in his heart.

To accomplish this task, 200,000 people, it will take at least two to three years to complete.

On average, sixty-six people are needed per mile, and from this point of view alone, it seems that it is not difficult, even if it is purely manual, sixty-six people can build a railway for one mile in two or three years.

But this has to take into account the hundreds of bridges in the middle, large and small, these bridges have to be built immediately, and the people needed to build the bridges are even more, and these hundreds of bridges can easily row away at least 30,000 people.

Li Yuanji has seen the pictures of high-tech railway construction in later generations, and he has also moved the roadbed on the railway construction site, so he actually has some understanding of the construction of railways.

Coupled with the previous experience of the Changhai Railway, Li Yuanji set a time for this section of the railway, and within four years, the section of the railway from Chang'an to Yumen Pass will be opened to traffic.

Well, Qu Tuquan said two to three years, and Li Yuanji said four years, and the time seems to be very easy, and there is no problem.

However, the biggest problem lies in the fact that only one of the First Division of the Engineer Corps has been formed, and it is still proficient in all kinds of new equipment.

In other words, the four years that Li Yuanji said was the completion of the whole line, and the two to three years that Qu Tuquan said was also the completion of the whole line.

The premise of the two is that the construction corps of 200,000 people and 10 divisions should be neatly staffed and can be immediately put into construction.

And now, there is only one first division of 20,000 men, the other nine divisions, the second division is training recruits, and before the equipment is familiarized, the third division is recruiting.

According to the plan, the formation of the 10 divisions was to be completed within three years, and after all the 10 divisions were formed, there was only one year left for them to operate.

Well, the first nine divisions can be put into operation after completion, but the training period for each division is four months, three months for recruits, one month for proficiency, and the fifth month for entry construction.

At the end of the third year, they had to complete at least two-thirds of the way to be operational within four years.

This has to be said, it's a lot of pressure, Alexander.

……

"This is the case, for now, the overall pressure is still relatively large, let's talk about their opinions!" After returning to the barracks, Qu Tuquan immediately gathered his officers.

Of course, there are so many officers in a division, and it is impossible to call them all, so only the officers above the regiment commander came this time, as well as a few battalion commanders or company commanders that Qu Tuquan preferred.

The engineering corps is a completely new branch of the army, and it is completely unrealistic to organize it in full accordance with the rules, and it will not be possible to form it in a hundred or twenty years.

But the need for it is extremely urgent, and the time cannot afford to wait.

Therefore, there is such a wonderful system now, which is also regarded by many people as a way to be promoted.

At present, some of the officers have been transferred from the Ministry of Industry, and these are all veterans with relatively rich practical experience, but they lack the means to manage the army, but at present, everyone is the same, and they can slowly explore.

In order to prevent everyone from being confused, some officers were transferred from other active duty units, and this part of the people was an example of how to use military means to manage the army for others, but the number was not large, only one regiment commander, three battalion commanders, ten company commanders, and thirty platoon commanders.

In the rest, there are people who followed Qu Tuquan in the siege team before, whether it is the technical backbone or the foreman, they are all evaluated according to their respective abilities, and they have been recommended by Qu Tuquan and awarded the corresponding military ranks and positions.

According to Qu Tuquan's recommendation, the highest rank is a regiment commander, and most of the rest are at the level of company commander, but in any case, they can be regarded as ordinary workers to officers.

This is also why it is regarded as a good channel for promotion, and such a child's promotion system is really surprising.

Well, no matter what is said, no matter how it looks out there.

As the first battle of the first division, we must fight a beautiful battle as soon as possible and fight a beautiful turnaround battle.

But the emperor's task is there, there is only one division of troops, this is no way, the number of people is too small, even if it is built day and night, it is impossible to compare with the construction speed of 200,000 people.

"If you want to speed up and complete the task, you may have to sacrifice our division first." Chen Biao frowned deeply and said, he was transferred from the army, although he was not a technical branch, but he was more influenced by the army, and his mind was more open.

"How?"

"Your Majesty's requirements for the station do not have too many requirements, and now most of the stations are not complicated, to the west, the land is vast and sparsely populated, similar to Chang'an, Luozhou This size of the station is unlikely, so although the requirements are not clearly listed, but for the sake of time and cost performance, most of them will choose ordinary stations.

And the construction period of an ordinary station is three months, and a division, within three months, if you work hard to build, you can build about twenty such stations.

In other words, the stations can be put aside for the time being, without considering the issue of construction, and after three years, after all the troops have been formed, the corresponding troops will be sent to build these stations according to the amount of work at that time.

And the whole project, the most difficult is the construction of various bridges, the land bridge is good to say, the most headache is the water bridge, the construction period of a bridge will take one or two years, especially the Weishui Bridge, even if the construction period is smooth, it will take nearly two years to complete.

Therefore, if we need to ensure that the tasks can be completed, our division should devote the earliest investment, and we should do those time-consuming and difficult tasks first. Chen Biao said his thoughts and opinions, and even took out some data for comparison.

Qu Tutong has not been specifically involved in the construction of bridges, but he also has a certain understanding of bridge construction, especially recently, since he decided to join the army, Qu Tuquan has found dozens of bridge experts to ask some questions about bridge construction.

There is no doubt that there is water and there is no water, although both are bridges, but the difficulty of construction is completely several levels.

The most difficult part, when there is water, is to first lay a giant cylinder at the position of the pier, which must be waterproof, and then evacuate the water in the bucket before you can start to drill holes and find a suitable place to place the pier.

It is precisely because of this understanding that this trip, including the previous route planning, has avoided the places that need to be bridged as much as possible, and it is really impossible to avoid it, so I avoided building bridges on the water as much as possible.

If you can't avoid it, you can only choose a suitable location, that is, the closest position between the two sides of the strait, and if possible, it would be better to have a piece of land in the middle.

The location of the Weishui Bridge leading to Xianyang in Chang'an is such a location, about five miles east of Xianyang, the bridge is divided into two sections, a section of about 35 meters, a section of about 32 meters, in this way, only need to play a bridge pier in the middle, if you don't need to consider safety issues, you can even not play a bridge pier.

Of course, whether to hit the bridge pier or not, that is not Qu Tuquan's calculation, but the Ministry of Industry's calculation, after all, the drawings are issued by them, and the engineering corps is just an implementation of the military unit.