Chapter 690

Step into the command building.

Gu Lu met Zheng Chun, the chief engineer of the Bohai Tunnel Project, on the second floor.

I haven’t seen you for more than three years.

Zheng Chun is much older than when we last met.

He was not even fifty yet, and already had gray hair on his temples.

visible……

The big project of the Bohai Tunnel was very exhausting for Zheng Chun.

Today, Zheng Chun has been elected as an academician of the Chinese Academy of Engineering.

However, he himself does not have the airs of an academician or chief engineer.

Seeing Gu Lu come in, Zheng Chun immediately greeted him warmly.

"Professor Gu, we haven't seen each other for a long time!" A smile appeared on Zheng Chun's tired face.

"General Manager Zheng, long time no see!" Gu Lu shook hands with Zheng Chun vigorously.

"How is Mr. Guo's health?" Zheng Chun asked with concern.

Zheng Chun had already heard the news that Academician Guo was unable to come here due to health reasons.

"It's nothing serious, just take a night's rest. However, by the time Mr. Guo arrives, I'm afraid it won't be tomorrow morning at the earliest." Gu Lu explained, "So Mr. Guo asked me to come over first to see if I can do something.

The power!”

Gu Lu raised his head and looked at Zheng Chun, "Chief Engineer Zheng, what kind of trouble have we encountered in the construction of the Bohai Tunnel? We are so worried!"

"Alas!" Zheng Chun sighed.

Zheng Chun knew that Gu Lu still held the title of technical consultant for the Bohai Tunnel Project, so he didn't hide it, "This is what happened..."

………

Time goes back to five hours ago.

At 5:10 pm on February 12, 2021, Zheng Chun led the team to complete the hoisting and sinking of the final joint of the Bohai Tunnel. According to on-site satellite and sonar measurement data, the lateral deviation of the joint was only three to four centimeters. This data can be called

Perfect.

Because according to the design, the allowable lateral deviation of the final joint is within 7 cm.

It stands to reason.

At this point, the Bohai Tunnel can be declared successful at the final joint of the immersed tube end of the Bohai Tunnel.

But Zheng Chun did not take it lightly.

He is still waiting for another data.

A data called "penetration measurement".

This is the data obtained from a measurement system established with optical measurement methods, and it is also the data that will eventually be recognized.

This data can only be obtained after opening the steel sealing door of the final joint.

but.

I waited for more than three hours.

Zheng Chun has not yet waited for the ‘throughput data’ report to come out.

So Zheng Chun guessed that something must have happened.

"Something must have gone wrong".

Zheng Chun picked up the phone and called the person in charge of the penetration survey, "What's going on? Is the data out?"

The person in charge grumbled on the phone: "The penetration data shows a deviation of 10 centimeters... 12 centimeters... maybe 14 to 15 centimeters. However, the immersed tube structure is not affected and there is no leakage."

Obviously, this data, which is far from the GPS measurement, makes the person in charge worried.

There was a hint of crying in the voice of the person in charge, "General Manager Zheng, we have reviewed and calculated the data many times and found that the two data are too far apart, so we dare not report it."

Zheng Chun gritted his teeth, "What is the deviation of the penetration data? Give me an accurate data!"

"Ten, seventeen centimeters..." The person in charge's voice sounded trembling.

"Fuck!" Zheng Chun threw down the phone and cursed loudly.

"Wait for me at the scene, I'll be there right away."

Arrived at the scene.

Zheng Chun personally tested it with instruments.

really……

Through data display.

The maximum lateral deviation at the tunnel joint is a full 17 centimeters.

And according to the regulations.

The permissible lateral deviation at the joint is seven centimeters.

There is a full centimeter difference between the two.

After seeing this data.

Zheng Chun fell silent.

He had quit smoking for more than ten years and started smoking again.

After finishing a cigarette and sipping the butt, Zheng Chun looked up at the night in the Bohai Strait and dialed several project leaders, "Something happened."

Since it was New Year's Eve, many leaders of the project team went home to celebrate the New Year.

There are not many people who can be called in a short time.

There are even fewer technical leaders.

For example, the chief designer of the project team.

After the final docking of the immersed tube tunnel was completed, I took a flight back to my hometown to reunite with my family. There was no way I could make it back in a short time.

therefore.

Forced to do nothing, Zheng Chun had no choice but to seek help from Academician Guo, who lived in a neighboring city.

But I didn't expect it.

The house leaked and it rained all night.

Academician Guo is suffering from an old illness and will not be able to come for the time being.

Only a small technical consultant like Gu Lu was sent over.

It’s not that Zheng Chun looked down on Gu Lu.

Zheng Chun had also seen Gu Lu's skills at the pre-construction seminar a few years ago, and it can be said that the future is promising and the potential is unlimited.

Now.

More than three years have passed.

Whether or not Gu Lu, a potential stock, will grow, is an unknown!

…………

Here at the command center.

After listening to Zheng Chun's story, Gu Lu nodded clearly.

It turns out that the problem Zheng Chun encountered was an error in the joints of the immersed tube tunnel!

There are errors in the joints of immersed tube tunnels, which is inevitable.

After all, jointing is a very delicate job, especially underwater.

This is almost equivalent to threading a needle under the sea.

No one can guarantee 100% accuracy.

It is normal for errors to exist.

But if the value of this error reaches 17 centimeters, it is a bit large.

but……

Then again.

The value of seventeen centimeters is not unacceptable.

Because although the lateral error at the joint is relatively large, according to the person in charge, the immersed tube structure is not affected and there is no water leakage.

This is very confusing.
To be continued...