God-level industrial master

Chapter 425 The real test
To be honest, Tang Fei was also a little worried.

Of course, there is no problem with our own shield machine. The world's best and most advanced large-scale shield machine is also of good quality.But it is very difficult to control the ground subsidence within 5mm.In addition, the factors that cause land subsidence are not only the shield machine, but also some human factors, such as whether it is operated according to the regulations.

It is estimated that the biggest is the human factor.

There are some geological conditions, but the shield machine is not constructed deep underground, and the construction depth is only tens of meters. The geological conditions in Dongyang City are not complicated. There are no geological fault zones like the Dagongshan Tunnel, hot spring water belts, etc. .

Tang Fei went there in person, just to make everyone pay attention to it, strictly follow the operation and construction procedures, and not be sloppy.The president of Jiuzhou Industrial Group has come here in person, at least the engineers and technicians of Jiuzhou Heavy Industries there must pay attention to it.

In addition, Tian Hao must be specially told that Dongyang City must not operate in violation of regulations.In addition, Tang Fei also wanted to see the real performance of his shield machine.

When the shield machine passes under this ancient city wall, how big will the ground subsidence be, 2 or 3 mm, or 4 or 5 mm, or more than 5 mm?
Chen Guihong nodded and said: "Brother, in such a situation, you really deserve to go there yourself. If you can really control the ground subsidence within 5 mm, then you will set a new record, and it will be a world record."

At present, there is no shield machine that can guarantee that the ground subsidence will be controlled within 5 mm when constructing subway tunnels.

The German shield machine is not good, the American shield machine is not good, and the Japanese shield machine is even worse!
The two talked while walking. Gradually, the rumbling sound in their ears gradually increased. After walking a certain distance, they finally saw the "Colorful Cloud" under construction at the end of the tunnel.I saw that it was digging hard like a giant sand-swallowing beast.

Behind the shield machine, there are many workers and a lot of construction equipment. Some workers are placing the steel skeleton, and some workers are pouring concrete.

A little further forward, you can see the steel structure support on the cave wall, and you can also see some workers operating construction equipment to spray cement mortar and reinforce the cave wall.

"Brother, let's go ahead and take a look on the 'Colorful Cloud'." Chen Guihong suggested, it can be seen that he walked into the "Colorful Cloud" more than once.

Now that the "Colorful Cloud" was right in front of him, Tang Fei's interest also rose, and he boarded the large shield machine under construction together with Chen Guihong, and walked into its interior.

The inner space of the shield machine is very large, and many workers are busy, performing various operations, and can also see a large amount of mud and rocks being sent out through the conveyor belt.

In the end, the two walked into the control room of the "Caiyun", where there were not only two or three operators, but also a technician from Jiuzhou Heavy Industries.

In the control room, there are various instruments and meters, and several large display screens, one of which can clearly see the excavation status of the cutter head.

Chen Guihong said with satisfaction: "Brother, your shield machine is really advanced. I have inspected the shield machine imported from abroad, but it is definitely not so advanced."

Tang Fei smiled slightly. Jiuzhou Heavy Industry's shield machine represents the highest level of shield machines in the world today. At present, no shield machine in the world can compare.Foreign shield machines are either backward in technology or poor in performance.

Chen Guihong said: "Brother, after all the shield machines are in place, our Line 2 will have multiple shield machines for simultaneous construction. At that time, the construction progress will definitely be very gratifying. It is a foregone conclusion that the construction of Line 2 will be completed ahead of schedule. "

"To be honest, we should consider ordering subway locomotives after Line 2 is fully dug through. It is estimated that about 20 trains will be needed. My opinion is to continue to order your subways. I will send the relevant report to Mayor Qiao for approval. .”

The relationship between the two is good, Chen Guihong will talk to Tang Fei about this.It was also because of the good relationship that Tang Fei said jokingly: "Brother Chen, are you no longer engaging in subway bidding?"

Without even thinking about it, Chen Guihong waved his hand and said, "Stop bidding, and purchase directly. Practice has proved that your subway is much better than imported ones, and this has been fully reflected in the operation process of Changzhou City."

Tang Fei laughed, "Brother Chen, you are welcome to continue to order our subways at any time. Whether it is a type A car or a type B car, whether it requires a 6-section train or an 8-section train, we can manufacture all of them."

The two watched in the tunnel for a long time, and it was not until evening that they left the tunnel together, found a restaurant, and asked for a private room, where they drank wine, ate food, and chatted.

A few days later, Tang Fei was going to Dongyang City.

At this time, the large shield machine has already dug nearly a thousand meters, and it is very close to the ancient city wall.After a few tens of meters, it is estimated that they will arrive directly below the ancient city wall.

The experts from the Cultural Relics Protection Bureau of Dongyang City are simply facing the enemy. In the area where the shield machine will pass through, a lot of ground sensors have been installed early to conduct strict inspections on the ground. Immediately stop the construction of the subway.

Zhou Xiping is an expert in cultural relics protection. He is very familiar with the ancient buildings and places of interest in Dongyang City. He is also one of the people who firmly opposes the subway construction in Dongyang City. The reason is that the subway construction will cause ground subsidence and cause damage to ancient buildings.

Under his proposal, a large shield machine will pass through this section of the ancient city wall, and a lot of ground sensors will be installed. Today, Zhou Xiping even came in person.

"Xiao Xie, how is the monitoring situation?"

Xiao Xie replied: "Expert Zhou, everything is normal, and there is nothing abnormal about the ground sensors."

impossible.

Zhou Xiping was puzzled, thinking to himself, how could there be no response from the ground sensors, since such a large shield machine is being constructed underground, the ground must have responded.

Could it be that the shield machine hadn't reached the bottom of the city wall yet, thinking so, Zhou Xiping made a phone call himself and asked the construction party of the subway tunnel.

The other party told him that it was only a few tens of meters away, and at the most tomorrow afternoon, the large shield machine would arrive directly under the ancient city wall, and then pass through the underground of the city wall.

It is only a few tens of meters away, so the distance is not too far. The sensor will have some changes and some reactions.Zhou Xiping was worried, and checked several ground sensors himself, but there was indeed no response.

There seems to be something wrong with this.

After thinking for a while, Zhou Xiping directed Xiao Xie and others to move two of the ground sensors forward several tens of meters to directly above the shield machine.

That is to say, tens of meters directly below where the sensor is placed is the large shield machine under construction.Zhou Xiping thought in his heart, this time, there must be a reaction.

However, there was still no response.

Zhou Xiping was puzzled, and carefully checked these ground sensors. After checking, he asked, "Xiao Xie, why are all the ground sensors made in China? What about the imported sensors?"

Xiao Xie replied: "The number of imported sensors is limited, so we all use domestic sensors."

Zhou Xiping waved his hand and said, "Use all the imported sensors. It may be that the domestic sensors are not sensitive enough. You see, they have no response."

He attributed the reason to the domestic ground sensor.

Xiao Xie didn't dare to neglect, took the imported ground sensors, installed them, and focused on monitoring the ground subsidence.

……

No one would have guessed that near this section of the ancient city wall, a young man with a high-end camera, casual attire, and sneakers was taking pictures everywhere.

People who don't know think that the man is just an ordinary tourist. In fact, he is Matsumoto Teru of Yamazaki Heavy Industries. According to Maeda Shiyasu's instructions, he arrived in Dongyang City this morning. Take a picture of the city wall that went through.

I took a lot of photos, because the camera is good, and the photos are relatively clear.Obviously, he was going to take a picture of the ancient city wall before the shield machine passed through it and before it was damaged.

After taking a lot of photos, Matsumoto felt that enough was enough, and then he left the ancient city wall and found a hotel nearby to stay.

He plans to come back to take pictures in two days. At that time, the large shield machine has just passed under the city wall, which has already caused the ground to subside. The ancient city wall will be damaged and cracked. He is going to take pictures of all the damage to the city wall. Take the photos back.

……

The shield machine is about to pass under the ancient city wall and will face its first real test. Tang Fei brought Ling Zan, the chief engineer of Jiuzhou Heavy Industry, to Dongyang City.

Tang Fei arrived in the evening, and Tian Hao went to the airport to pick him up in person, and arranged a sumptuous dinner to show his friendship as a landlord.

After eating, Tian Hao told Tang Fei that around tomorrow afternoon, the shield tunneling machine will dig right under the ancient city wall. It can be heard from the words that Tian Hao is still quite worried.

If it causes large-scale subsidence on the ground, it will be troublesome.Cultural relics protection experts said that the ground subsidence should not exceed 5 mm. Tian Hao had already prepared for the worst. If the subsidence reached 7 or 8 mm, he would also force construction.

The next day, afternoon.

Around three o'clock, Tang Fei and Ling Zan came to the vicinity of the ancient Great Wall accompanied by Tian Hao and other middle and high-level managers of the Dongyang Metro Company.

Looking up at the section of the ancient Great Wall, Tang Fei can fully feel its historical precipitation, the simplicity and vicissitudes seem to come head-on.I thought to myself, it would be a pity if such a thousand-year-old ancient city wall was damaged due to the construction of the subway.

Tian Hao was next to Tang Fei. After checking the time, he said, "Mr. Tang, the large shield machine has arrived directly under the city wall. Come on, let's go over and have a look."

A group of people arrived at the city wall.

Standing under the city wall, Tang Fei touched the city wall and said in his heart that the real test has already begun. He doesn't know how his shield machine is performing.

"what!"

Tang Fei was slightly surprised. He didn't expect that a lot of ground sensors were installed here, and he also saw some people who were obviously not from the Dongyang Metro Company.They seem to be people in the field of cultural relics protection.

……

The third update will continue today, and the second update will be delivered!

(End of this chapter)