God-level industrial master

Chapter 424 Reaching the Ancient City Wall

The first large-scale shield machine with a diameter of 6 meters 3 arrived at the tunnel construction opening in Dongyang City. Here, all the preparations are ready and we are waiting for the arrival of the first shield machine.

Seeing this shield machine, Tian Hao found that his worried heart gradually let go, and waved: "Cooperate with Jiuzhou Heavy Industry's personnel to do a good job in the assembly of the shield machine."

The large crane started to work, hoisted the shield machine from the large transport vehicle, and reassembled it.In order to facilitate transportation, the shield machine, which was originally a whole, was disassembled into several parts.

After being transported to the construction destination, it can be reassembled very conveniently.The personnel of Jiuzhou Heavy Industries got to work and directed the hoisting of the shield machine.Many people from Dongyang Metro Company are cooperating.

Looking at the scene in front of him, a high-level executive said: "Mr. Tian, ​​our first shield machine has finally arrived, and it will solve our big problem!"

Tian Hao said: "It is the first one. According to the contract, another one will be delivered to us this month. With these shield machines, we no longer need to use the traditional drilling and blasting method for tunnel construction. It is estimated that we can tunnel in one day. The amount is equal to what we had a week before”

Jiuzhou Heavy Industry's large-scale shield machine has the highest record of digging through a mountain within a week. At that time, many domestic newspapers reported this matter, and Tian Hao also read the report.

I am really looking forward to digging through a mountain in a week. I wonder how they will be used in the construction of subway tunnels?

It was still the high-level executive next to him, feeling happy and a little worried, "Mr. Tian, ​​I have heard about the excavation efficiency of Jiuzhou Heavy Industry's large-scale shield machine. I heard that the efficiency is much higher than that of imported shield machines. It's just that I don't know how much impact it has on the subsidence of the ground."

Although he has a relatively full understanding of the performance of the shield machine, after all, he has not practiced it. Tian Hao was also a little worried, and looked up into the distance.

Less than one kilometer is the ancient city wall of Dongyang City, and this tunnel just passes through the underground of this ancient city wall, and then extends continuously. The length of the tunnel in the urban area is [-] to [-] kilometers.

These [-] to [-] kilometers of tunnels not only pass under many high-rise buildings in the urban area, but also pass under many historical buildings and historical sites.

It would be a lie to say that I am not worried.

Tian Hao also knows that the subway route has been repeatedly modified to avoid historical buildings and places of interest as much as possible, but there are some that cannot be bypassed, so he can only bite the bullet and pass through them underground.

"Give it a try, if it really doesn't work, then find a way." Tian Hao thought in his heart.

The first large-scale shield machine arrived, was assembled, and then, it was put into use within two days. It entered from the entrance of the tunnel, plunged into the depths of the ground, and began to work rumblingly. A lot of soil, sand and gravel , and even rock fragments were sent out.

It is like a giant beast, advancing at a speed of several meters per hour.Carloads of mud and stone were transported out of the tunnel.

The length of the circular tunnel with a diameter of 6 meters 3 is lengthened every moment. The shield machine not only excavates very fast, but also fixes some supports. Then, there are engineering equipment behind it, such as cement mortar for the tunnel wall. Spraying, placement of steel skeleton, pouring of concrete and so on.

Since the excavation of the shield machine started, Tian Hao entered the construction tunnel in person every day to see the construction situation in person. Seeing the progress so fast, Tian Hao was a little happy in his heart.

But every time I came out of the tunnel and saw the ancient city wall in the distance, my heart was full of worries. I wondered whether the shield machine would cause ground subsidence and how much it would subside when it passed through the city wall.

Some media in Dongyang City, such as "Dongyang Daily" and Dongyang TV Station, have reported on this shield machine.

While everyone felt the rapid progress of the construction of the domestic large-scale shield machine, they were also full of worries.Dongyang City is not an ordinary city, it is a famous historical and cultural city, but don't let those thousand-year-old buildings be damaged because of the construction of the subway.

To be on the safe side, the Dongyang City Cultural Relics Protection Bureau began to place ground sensors around the ancient city wall to monitor the ground's subsidence.

Once there is an abnormality, it is estimated that experts from the Cultural Relics Protection Bureau will come forward to prevent the construction of the tunnel on the grounds that it will affect historical buildings.

Before buying Jiuzhou Heavy Industries' large shield machine, Dongyang City consulted or contacted several large shield machine manufacturers in the world, including Japan's Yamazaki Heavy Industries.

They are no strangers to Jiuzhou Heavy Industry, and even regard Jiuzhou Heavy Industry as a competitor in the field of large shield machines.Last year, Yamazaki Heavy Industries planned to build a factory in Shenhai City to produce heavy engineering equipment, but lost to Jiuzhou Heavy Industries when buying the factory of Korean Kim Byung-nam.

In the end, they were still unwilling to give up China's huge market, and invested huge sums of money to start building a specialized heavy engineering equipment manufacturing plant in Shenhai City. kilometer.

After such a period of construction, most of the construction of their factory area has been completed, and several large factory buildings have been capped, and they have begun to enter the installation stage of water, electricity and air in the factory buildings.

Maeda Zhitai has stayed in this factory area for the past two days, mainly checking the progress of the construction.Now in the office, he is listening to his subordinate Matsumoto Teru's report.

"Your Excellency, the first large-scale shield machine produced by Jiuzhou Heavy Industry for Dongyang City has been put into tunnel construction a few days ago, and the progress is now very fast. In a few days, a distance of two to 300 meters has been excavated. The media in Dongyang City There's a lot of reporting going on."

Maeda Zhitai said disdainfully: "This time, Jiuzhou Heavy Industries will definitely pay a heavy price. They dare to accept such a customer."

As early as half a year ago, Tian Hao had contacted Maeda Zhitai.To be precise, it was Maeda Zhitai who came to the door. He got the news that the subway construction in Dongyang City was imminent and a large shield machine was needed.

After a lot of marketing, Dongyang City also expressed the intention to buy, but Tian Hao seemed more stable, and specifically proposed that when the shield machine is being constructed, it cannot affect the historical buildings on the ground, and the ground subsidence caused by it should not be greater than 5 mm.

Maeda Shiyasu spoke boldly and kept saying that there was absolutely no problem. The shield machine they produced had basically no impact on the ground when the tunnel construction was carried out, and the subsidence of the ground would never exceed 5 mm.

When this requirement was to be written into the contract that if the ground subsidence was greater than 5 mm, Yamazaki Heavy Industries would be responsible and high economic compensation for the damaged historical buildings would be made, but Maeda Zhitai backtracked.

He also laughed at Tian Hao. No shield machine in the world can do this. It is very normal for the ground subsidence to be about 10 mm.

As a result, the business of this village naturally collapsed.

Later, Maeda Zhitai saw that Dongyang City had ordered 6 large shield machines from Jiuzhou Heavy Industries, and Jiuzhou Heavy Industries promised that the ground subsidence caused by the shield machine construction would not be greater than 5 mm. With the mentality of watching a good show, I am ready to watch Jiuzhou Heavy Industry make a fool of myself.

He ordered Matsumoto Hui to keep an eye on the dynamics of Jiuzhou Heavy Industry and Dongyang City. After listening to Matsumoto Hui's report, Jiuzhou Heavy Industry's shield machine was under construction in Dongyang City, and Maeda Shitai laughed.

"Jiuzhou Heavy Industries, you really don't know what to do!"

Teru Matsumoto also gloated and said, "Your Excellency, in a few days, that shield machine will approach the ancient city wall. At that time, it will cause a large area of ​​ground to subside. It will be a good show."

"Haha..." Maeda Zhitai laughed triumphantly. After laughing, he waved his hand and said, "Matsumoto, you go to Dongyang City in a few days, and take pictures of the ground subsidence and the cracking of the ancient city wall. Bring me the photos, I'll be of great use."

Matsumoto Hui seemed to realize what his boss was going to do with these photos, and immediately agreed: "Your Excellency, I will quietly go to Dongyang City in a few days and take all these photos back."

Haha ...

Thinking about the method he was going to take, Maeda Zhitai laughed again, from his malicious laughter, it could be heard that he was definitely going to play something.

……

Deep Sea City.

Today, Tang Fei was wearing work clothes and a hard hat, and followed Chen Guihong into the subway tunnel under construction. This is Shenhai Metro Line 2.

The construction is a "Rainbow" large shield machine with a diameter of 6 meters.At present, Jiuzhou Heavy Industry has delivered two "Rainbows" to Shenhai City, and the third one is expected to be delivered next month. These two "Rainbows" have already been put into the construction of the subway tunnel.

One of them has excavated more than 3000 meters, and the other has excavated more than 1000 meters.Led by Chen Guihong, he walked into one of the tunnels, and what Tang Fei saw was a beautiful cement tunnel.

The "Rainbow" is being constructed in the front, and the mud and rocks are cut off by a huge rotating cutterhead with a diameter of 6 meters, and sent out. Then, the construction personnel install tunnel supports at the back, spray cement mortar for reinforcement, and a little further back, then It is the workers who are placing the steel skeleton and carrying out the concrete pouring and other processes.

Tang Fei said: "Brother Chen, your tunnel is so beautiful, it shows a high level of quality."

Chen Guihong said with emotion: "The biggest contributor to making the tunnel so beautiful is your 'Caiyun' shield machine, which excavates a standard tunnel. It is very convenient for us to place the tunnel's steel skeleton and pour concrete. .”

The two chatted from time to time while watching the construction of the tunnel.Chen Guihong also asked with concern, "Brother, I heard that the first large-scale shield machine you produced for Dongyang City is already under construction, and it should perform very well."

Tang Fei said: "Its construction speed is still very fast, but in a few days, it will face its first real, huge test!"

"Oh." Chen Guihong looked at Tang Fei puzzled.

Tang Fei explained: "Dongyang City is unusual. It is a famous historical and cultural city. There are many ancient buildings and historical sites in the urban area. The construction of subway tunnels will have a certain impact on the ground. If you think about these ancient buildings and scenic spots The historic site will not be affected, and the ground subsidence cannot exceed 5mm during the construction of the shield machine."

Cannot be larger than 5mm!

Chen Guihong was really worried for Tang Fei, "Brother, this requirement is too harsh, can your shield machine do this?"

Tang Fei was not completely sure, and said slowly: "In a few days, the shield machine will dig under the first section of the ancient city wall. I will go and have a look."

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Three more updates will continue today, and the first update will be sent
(End of this chapter)