Build Madness

There are many construction methods of underground engineering, which can be roughly divided into open excavation method and underground excavation method.

Cutting methods include:

open cut (pit digging in situ),

Foundation pit support open cut (similar to house foundation),

After digging the temporary roof (laying steel plates), the cover excavation of the operation is carried out...

Undercover methods include:

1. The scientific name is spray-bolt underground mining method, drilling and blasting method. (Traditional digging, supporting, and blasting mountains, such as Daqingshan River)

2. Float the prefabricated pipes to the construction site on the river surface, and sink them one by one to install them in the dredged foundation trench. (The small commodity market dug by Heihu is connected to the artificial lake section in Xiangxian County, which was not mentioned in the previous article.)

3. When laying pipelines or setting up tunnels, in order not to affect the ground houses and other engineering facilities, use jacks to push the prefabricated pipe sections or box culverts forward with excavation. The scientific name is: pipe jacking method. (The most common construction method for crossing streets, roads, walls and other obstacles.)

4. Caisson method, also known as caisson sinking method. That is, before the excavation of the soil layer, a pre-fabricated section of the 6-7 meter long integral well wall is allowed to partially sink into the soil by its own weight, and then under its cover, it sinks while digging. Normally, it can only sink 30 to 40 meters, but with the assistance of vibration, mud flooding, etc., it can reach about 200 meters. (It's like putting a bucket with the bottom upside down on flat ground and letting it sink.)

5. Shield excavation method, referred to as: shield method. This is a fully mechanized construction method, mainly used for the excavation of interval tunnels. The operation method is: let the shield machine advance in the formation, support the surrounding rock through the shield casing and segments to prevent collapse in the tunnel, and at the same time use the cutting device to excavate the soil in front of the excavation face, and transport it to the tunnel through the excavation machine. Outside the tunnel, jacks are used to pressurize the rear part, and prefabricated concrete segments are assembled to form a tunnel structure.

Except for the fifth type of technology above, even if the underground project of the Ice Bear Space Center is not cracked, Tian Cheng has already obtained it by completing the information and activating the system technology.

According to the subway route planned by Tiancheng:

Zaoshi New Town—Nansihu Wei County—Jishi Guyue Hotel—Canal CBD—Xingyuewan Square in Xiangxian County—Xiangxian Old City Hub—Xiaohu Town—Xiaoqingshan, Sancha Township—Wen County—Daxing City, East Lake—Liang County - Tai City - Jinxiuchuan.

Bridges are erected when encountering rivers, excavated when encountering cities, and tunnels are used in mountainous areas. The whole project is similar to light rail, except that the carrying capacity and track type belong to the engineering project of the subway nature, and shield machines are basically not used.

Oh shield machine!

The scientific name of the shield machine should be called the shield method tunnel boring machine, which is used for the construction of tunnels in soft soil layers, including the construction of subways, underground drainage, underground cables, gas pipelines, etc.

But it is not the only machine for shield tunneling construction. There is also a TBM, scientifically called full-face hard rock tunnel boring machine, with even more superior performance.

However, no matter how the two are distinguished and how diverse the types are, the whole is like a horizontal cylinder.

The main parts are divided into:

The front end is a cutter head, which is driven by electricity for rotary excavation.

The rear part is a bucket, which is connected with the conveyor belt and is used to dump the muck.

Then there is the soft rock support machinery, which can spray and pour concrete, or assemble prefabricated blocks, and construct a channel like a drainage pipe underground through machinery.

In addition to the conveyor belt for transporting muck at the end, there is also a 'jack' responsible for propulsion.

For people in this era, the shield machine is a very high-end mechanical structure product. At present, only Germany, Wajima, and North America can independently design and manufacture it.

And to use it, you must have a very deep understanding of geology, civil engineering, machinery, mechanics, hydraulics, electricity, control, measurement and other disciplines.

Logically speaking, China is a strong country in infrastructure construction, and it is impossible not to build a shield machine.

But intellectual property at the international level is a very complicated thing.

If you want to build it, you must either acquire a company with the core technology of the shield machine, or create a brand new shield machine that is different from overseas, or you have to pay patent fees...

In the future, there will be about 50 million red notes for one German-made shield machine, about 30 million one Nissan shield machine, and only 20 million Chinese-made shield machines.

Therefore, even if this thing is not needed for the time being, Ge Xiaotian asked Da Mao to buy back a hybrid shield machine with a slightly higher price and slightly advanced technology for all-round dismantling research.

We dare to build a lithography machine that is tens of thousands of times more difficult than making 'peace', not to mention the construction machinery that our main business will definitely use in the future?

the most important is……

This is the millennium.

Only the four cities of Beijing, Shanghai, Guangzhou, and Taiwan are repairing subways. All projects are owned by the Railway Bureau, and there is no qualification for subway contracting.

In addition, there is no city quota limit, or Huaxia has not set a city budget of 10 billion, an urban population of 3 million, a total urban population of 7 million, a regional GDP of 100 billion, and an hourly passenger flow of 30,000 people. (03 years)

If during this period, Tiancheng puts on a GIS white coat, UAV model aircraft, self-produced shield machine, rail tunnel traffic design and research institute, and then discusses with the railway bureau to have a construction site competition...

High-end, bluffing, and fast, the construction of the subway is almost done like this.

After a few years, Huaxia will issue qualification certification, and it is estimated that Tiancheng will be able to directly own the most advanced one.

As for project approvals...

Ge Xiaotian ran to the Xiangxian hub and saw a second-hand shield machine with a diameter of 6.8 meters, a length of about 65 meters, and a weight of 160 tons. It had been refurbished by the Wadao company and looked brand new. He chose a good angle to take a few photos , bring the relevant information and go straight to the Jifu...

………………

Jifu compound.

It was a lot easier for Mr. Yu to hand over the east route project of the south-to-north water diversion project to Tiancheng.

The original budget was 10 billion, but now it only needs to pay 5 billion for the project, and the remaining money is enough to help Jishi tide over the difficulties.

What's the problem?

Tian Cheng was running too fast. In order to keep up with him, Shao Baitou applied for a loan again and again, preparing to build a township road project connecting the Limin activity center.

Borrowed by Tianrong?

Yige xx's brains and skills, how dare you borrow them?

Maybe that kid is staring at a certain area of ​​Ji City, just waiting to play hooligans!

You must know that the local government cannot borrow from the bank, and if they have no money, they can only ask their superiors.

To supplement finances from Tianrong, it is necessary to transfer land, projects, and fixed assets to achieve the purpose of financing.

In case when it's time to repay the loan, the kid doesn't want the money, but only the 'mortgage'...

With the multiple relationships between the two parties, Shaobaitou will definitely not come back.

but……

Mr. Yu frowned and thought for a while.

At the beginning, in order to obtain Daqing Mountain, Xiang County threw out the coal mine in Xiaohu Town.

In order to take Liang County, Jishi threw out a mountain range in the northeast.

Yankuang does not belong to Yancheng, and has its own system.

Ge xx is not interested in Confucian mansion.

The East Lake is already big enough, it is impossible for Tian Cheng to ask for Nansi Lake, and since he has the right to manage the canal, Tian Cheng will not ask Jishi for it.

There is Dongshan Jianlian in the urban area, which does not conform to the Tiancheng system...

In other counties, Tiancheng has projects...

After counting and counting, there should be no good places in Jishi.

If you sell a piece of wasteland to Tianrong in exchange for several billions of funds, even if Ge Laoer is playing a hooligan, what should be built is still to be built, and it seems that there will be no loss...

What's more, the excess funds for the canal management belong to special funds. Even if he is the leader of Dongshan University, he is afraid that someone will take the opportunity to find fault...

Thinking about it, Mr. Yu dialed the Jishi office, Why don't you try with Tianrong?

Leader, when Ge Xiaotian suggested this, I felt like I was being targeted...

Try it first, lend a billion yuan first, if the transfer they ask for is not very important, just agree, and then continue to lend.

All right……

Putting down the phone, Mr. Yu thought about it again and again, and felt that there should be no problem.

…………………

Jinxiu River.

As soon as Ge Xiaotian landed, he received a call from Tianrong.

Don't come to 'loans' for a long time!

Of course he knows that local governments cannot borrow from banks, let alone private financial institutions, and can only exchange funds by selling them out.

'Fortunately, I was a step too late. If I went to Jifu to talk to Lao Yu about the subway, I had prepared for a long time and planned to fool Shaobaidou into a 'loan', I'm afraid it would go to waste. '

Ge Xiaotian looked around, squatted in a corner, took out the subway planning map from the document bag, and ordered Tianrong's supervisor, Give me all the 2,000 mu of land around each subway entrance and exit. One billion is not enough, just two One billion, including Taishi, by the way, no natural financing, use my money. Quickly, finish it as soon as possible today, it doesn’t matter if you lose a little.”

It's all in the wilderness and remote places that no one wants, and some of them deviate from our existing projects. I'm afraid the young leaders will be very happy...

It's better to be happy, it's sloppy, including the land in Tai City, call me when you're done.

OK!

Once the subway was connected, land prices skyrocketed.

If Jishi paid for the subway repair, Ge Xiaotian would have nothing to do with it.

But when Tian Cheng paid for the subway repair, he must reap the benefits in advance, otherwise wouldn't he show that he is stupid?

The city disagrees?

Well, I will put these tens of billions of projects in other places, Zaoshi, Heshi, Taishi, bypassing Jishi...

Of course, Tiancheng and Jishi belong to a community of interests, and after Shaobaidou finds out the truth, he will only be entangled rather than angry...

……………

Obtaining the land was originally very complicated, but when it involved selling it, and Jishi was really short of money, Tian Cheng readily agreed...

It was done extremely quickly.

However, seeing that the land that Tiancheng wants is either at an average price of 100,000/mu or at an average price of 200,000/mu, all deviate from Tiancheng's industrial chain...

Moreover, the textile factory dormitory on the west side of Guyue Store in the urban area is famous for being dirty and messy. Jishi offered a high price of 500,000/mu, and Tiancheng readily agreed...

If something goes wrong, there must be a demon!

the next day.

The newly appointed leader of the Resource Bureau who succeeded Bureau Sun asked for leave.

third day.

The young and white-headed leader who went out in person, became more and more guilty, and couldn't help calling Mr. Yu, Leader, is there any news from above?

What's wrong?

Ge Xiaotian bought all the wilderness, which has no development value at all.

It's probably planning to build a factory, no, just build a factory and rent land...

That's right, the properties of the two lands are different, and the transfer contracts are almost all commercial land, comprehensive land, and residential land...

strangeness!

The two were wondering, the secretary stepped forward and handed over a note.

'Ge Xiaotian came to visit. '

Huh? A bad thought suddenly came to Mr. Yu's mind. It seemed that this kid came to the Jifu compound for the first time on his own initiative!

Leader, I'm here to repair the subway for you!

Before signaling the big secretary to bring the kid in, there was a beating sound coming from downstairs...

Subway? What subway?

Didn't you say that you have the ability to repair the subway for you?

Stepping into the office, Ge Xiaotian put the photos and documents on the desk, First spent 50 million yuan to buy the world's most advanced shield machine, and then spent 200 million yuan to invest in a super-large cement factory to produce prefabricated parts in advance. Then invest 500 million yuan, rely on the GLONASS system with an investment of 400 million yuan, build a GIS platform, and explore the geology and landforms along the way. Now we have also invited the Washima Shinkansen technical team and the North American subway technical team...

Mr. Yu was stunned, When did I say I wanted you to repair the subway for me?

When the graphene storm is over, I'll call you. You seem to be on a business trip. I said to build Daqingshan, but you said I could build the subway...

???

I will definitely keep the leader's words in mind. For more than a month, I have been thinking about this matter all day long...Leader, the plan worth 50 million yuan has been prepared. If you say you don't fix it, I'm afraid I will Damn it!

???

The young man on the other end of the phone was silent for a long time, Leader, you seem to have said that the subway is being built...

???

Who are you with? !