Chapter 691

"The lateral error is 17 centimeters. Do you want to fine-tune the docking again? Let's talk about it." Zheng Chun crossed his fingers and glanced around the people in the conference room. His tone was calm and could not be heard as a big disturbance.

This is Zheng Chun's habit. Whenever he encounters a major decision, the first step he has to do is to collect information and weigh it.

There was brief silence in the conference room for a few seconds.

Then, a person in charge was the first to speak, "Because there is no water leakage, I can accept even a deviation of 10 centimeters, but a deviation of 17 centimeters has reached the limit of the design's tolerance. It is difficult to make a choice now. If I install it again, the process will not be scary.

, but I am afraid of pretending to be unsuccessful again. Once we go from success to failure, everything will be ruined."

As the person in charge of the Bohai Tunnel project team, he knows very well that if the error defect this time is within 10 centimeters, it can be adjusted through decoration or welding of the inner surface of the pipe section.

But the number of lateral deviation came to a full seventeen centimeters.

It is no longer possible to reverse repair through processes such as welding.

but……

If you choose to reconnect.

This will raise the risk factor to another level again.

If the reconnection is successful, then everything will be fine.

And if it fails.

The damage and subsequent impact caused are immeasurable.

after all.

The completion ceremony will be held the day after tomorrow.

At that time, not only many people in the industry will be present, but also many domestic and foreign reporters will attend the completion ceremony.

If the outside world learns about the failure of the Bohai Tunnel docking, it will lose the face of the entire country.

China has always been known as a powerhouse in infrastructure.

The failure of the Bohai Tunnel's docking will undoubtedly cause a huge blow to this title.

This responsibility...

These people on the Bohai Tunnel project team cannot afford to be responsible.

"Ahem, let me tell you my opinion." The person who spoke this time was the deputy general manager of the tunnel project. "The wrong edge exceeded the requirements of the acceptance standard and is a quality defect. Because there is no precedent for the final joint installation.

National standards can be used as a reference. If the Bohai Tunnel Management Bureau and the chief designer allow such a deviation and release it, as a project supervisor, I will agree."

"However, according to the Bohai Tunnel inspection and evaluation standards, quality points must be deducted from the project during the credit evaluation. A defect is a disqualification item and will inevitably become a failure in the installation of more than ten kilometers of immersed tubes."

When the project supervisor said the last two words "failure", Gu Lu noticed that Zheng Chun, who was sitting in the main seat, pursed his lips and clenched his hands tightly into fists.

This is a rather unwilling performance.

Not only Gu Lu, there were also people in the conference room who smelled Zheng Chun's unwillingness.

Sitting on Zheng Chun's left hand side is Zheng Chun's deputy, the deputy chief engineer of the Bohai Tunnel Project Team.

He glanced around the people in the conference room and expressed his opinion, "If it can meet the design and use requirements, I do not agree with the top opening and redoing, because the final joint does not leak. Theoretically, the four guarantee systems can be used according to the original

The process was reversed once, but there was no practical plan for the risks encountered during the reverse operation, so the risk of doing it again immediately was too great."

The deputy chief engineer did not hide his views during the decision-making meeting.

Because he is very afraid that the results of more than three years of hard work will be destroyed in one day.

If problems arise during the process, the project will be delayed for months or a year, causing a negative impact on the owner, contractor and even the country.

This loss is huge.

Whether it is tangible loss or intangible loss.

"I think what Chief Engineer Zhang said is right." Another person in the conference room stood up and expressed support for the deputy chief engineer's point of view. "In the final design of the joint push system, there was no plan for 'reinstallation' of reverse operation, but

For installation and testing, the hydraulic system has the function of removing the jacking beam and installing it again. Although it is possible to use a pump to retract the jack after releasing the load, it will pose a great challenge to the system equipment under complex working conditions."

The hydraulic pushing system of the joint was made by him, and he certainly knew how difficult it was to perform the reverse operation of reinstalling it.

If one thing goes wrong, the whole game may be lost.

"The crimping condition is quite good, and there is no leakage in the pipe. According to my previous experience, the overall linear shape is very good. Although the gina waterstop is compressed again, theoretically there is no problem with water tightness, but our longitudinal spacing,

The plane corner, vertical position, vertical corner, compression and water-stopping effect of the gina waterstop are all perfect.”

"In order to achieve a precise docking degree, it means putting all these hard-won perfect results back into uncertainty, so I tend not to redo the docking again." Next to him, the supplier of the rubber waterstop of the Bohai Tunnel

Shang also made the same point.

That is, it is recommended to keep it as it is and not to re-docking.

Because as far as the current situation is concerned, although the lateral deviation at the interface is large, the overall safety of the undersea tunnel is still well guaranteed.

At most.

The Bohai Tunnel's originally expected service life of 120 years has been shortened to about 100 years.

It’s not that this is impossible.

…………

Many people in the conference room expressed their opinions.

Some people have ambiguous attitudes.

But more people choose to keep things as they are and not try to reconnect.

As for the option of 're-docking', I didn't choose it.

Re-docking comes with risk and uncertainty.

No one has the certainty or confidence to say that the re-connection will be successful and will definitely be better than the current one.

and.

The hydraulic system and sealing water stop system at the tunnel docking point may not be able to support a new docking operation.

The conference room fell into silence again.

Zheng Chun rubbed his chin with his hand, frowning and saying nothing.

A moment.

He seemed to be as old as a teenager.

I understand what you are saying.

But……

I'm really unwilling!

But, even if you are not willing to give in, what can you do!

Zheng Chun sighed, rubbed his swollen eyebrows and said, "Since everyone's opinions are unanimous, I declare..."

"Chief Engineer Zheng, wait a moment." Zheng Chun was interrupted by a voice just in the middle of his words.

The person who interrupted Zheng Chun was none other than Gu Lu.

Zheng Chun looked at Gu Lu with searching eyes.

Gu Lu smiled slightly and said, "Professor Gu, can I say a few words."

Zheng Chun was stunned for a moment, then nodded, "Professor Gu, please tell me."

Gu Lu nodded in thanks, then took a deep breath and scanned the faces of everyone in the conference room.

The rest of the people in the conference room also turned their attention to Gu Lu.

There was curiosity and consideration in his eyes.

"I am just a small technical consultant of the Bohai Tunnel project team. I have not contributed much to the construction of the Bohai Tunnel in the past few years. I shouldn't have said anything more at such an important meeting. However, after listening
Chapter completed!