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 the last time we met.

He is not yet fifty years old, and his temples have already grown gray hair.

Visible......

The Bohai Tunnel is a big project, which makes Zheng Chun so exhausted.

Today, Zheng Chun has been rated as an academician of the Huaguo Academy of Engineering.

However, he himself does not have the frame of academician and chief engineer.

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

"Professor Gu, we really haven't seen each other for a long time!" a smile squeezed out of Zheng Chun's tired face.

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

"Guo Lao's body is fine. Zheng Chun asked with concern.

Academician Guo couldn't come here due to physical reasons, and Zheng Chun had already heard about it.

"Nothing too much, just a night's rest. However, when Guo Lao rushes over, I'm afraid it will be tomorrow morning at the earliest. Gu Lu opened his mouth to explain, "So Guo Lao asked me to come over first to see if I could do my best!"

Gu Lu looked up at Zheng Chun, "Chief Engineer Zheng, what trouble is there in the construction of the Bohai Tunnel, so anxious!"

"Alas!" Zheng Chun sighed.

Zheng Chun knew that Gu Lu was still holding the title of technical consultant for the Bohai Tunnel Project, so he didn't hide it, "Here's how it ......."

………

Time goes back five hours ago.

At 5:10 p.m. on February 12, 2021, Zheng Chun led the team to complete the hoisting and sinking of the final joint of the Bohai Tunnel.

This is because the final fitting is designed to have a permissible transverse deviation of within 7 cm.

It stands to reason.

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

But Zheng Chun did not take it lightly.

He's still waiting for another piece of data.

A piece of data called "Penetration Measurement".

This is the data obtained by a measurement system built by optical measurement methods, and it is the data that will eventually be recognized.

This data can only be obtained after the steel seal of the final joint is opened.

But.

I waited for more than three hours.

Zheng Chun has not yet waited for the 'breakthrough data' report to come up.

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 penetrating measurement, "What's going on?

The person in charge said on the phone: "Through the data, the deviation is 10 centimeters...... 12 cm ...... It may be 14~15 cm. However, the immersed tube structure is not affected, and the drip does not leak. ”

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

The voice of the person in charge carried a hint of crying, "Chief Engineer Zheng, we have checked and checked the data many times, and the two data are too far apart, so we dare not report it." ”

Zheng Chun clenched his teeth, "What is the deviation of the penetrating data, give me an accurate data!"

"Ten, seventeen centimeters ......," the voice of the person in charge trembled.

"Damn!" Zheng Chun dropped the phone and cursed.

"Wait for me at the scene, I'll go right over. ”

Arrived at the scene.

Zheng Chun personally tested it with an instrument.

Really......

Through-through data display.

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

And in accordance with the regulations.

The permissible lateral deviation at the joint is seven centimeters.

There's a centimeter between the two.

After seeing this data.

Zheng Chun was silent.

He has quit smoking for more than ten years, and once again smoked a cigarette.

After smoking a cigarette and taking off the cigarette butt, Zheng Chun looked up at the night of the Bohai Strait and dialed the phone number of several project leaders, "Something happened." ”

Since the time was Chinese New Year's Eve, many leaders of the project team went home for the New Year.

There aren't many people who can be called in a short period of time.

There are even fewer technical leaders.

For example, the chief designer of the project team.

As early as after the final docking of the immersed tunnel was completed, I took a plane back to my hometown to reunite with my family, and there was no way to rush back in a short time.

Therefore.

Zheng Chun, who was forced to be helpless, could only choose to ask Academician Guo for help who lived in a neighboring city.

But I didn't expect it.

The roof leak happened to rain overnight.

Academician Guo had an old illness and couldn't come for the time being.

Only sent a small technical consultant like Gu Lu over.

Zheng Chun didn't look down on Gu Lu.

Gu Lu's ability, Zheng Chun also saw at the pre-construction seminar a few years ago, can be regarded as a promising future with unlimited potential.

Right now.

More than three years have passed.

Whether Gu Lu's potential stock has grown or not, that is an unknown!

…………

This side of the command center.

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

It turned out that the problem encountered by Zheng Chun was that there was an error at the joint of the immersed tunnel!

It is inevitable that there will be errors in the joints of immersed tunnels.

After all, joint docking is quite a delicate job, especially when it is still underwater.

It's almost like threading a needle through the sea.

No one can guarantee 100% alignment.

It is normal for errors to exist.

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

But......

Then again.

Seventeen centimeters is not unacceptable.

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

It's very confusing.

In the current situation, you say that it is not re-docking, and it is not re-docking.

Because of this.

Zheng Chun will summon people to come over to discuss this matter.

"Come with me to the conference room. Zheng Chun said to Gu Lu.

Gu Lu nodded.

…………

Inside the conference room.

There were already several people sitting.

Through Zheng Chun's introduction, Gu Lu learned that among these people were equipment providers, special persons in charge sent by the governments of Qidong Province and Liaodong Province, engineering supervisors, and several engineering and technical personnel.

There was an oppressive silence in the entire conference room.

After waiting for a while.

Several more people hurried over.

Zheng Chun raised his wrist and glanced at the time.

It was already eleven o'clock on Chinese New Year's Eve.

It won't be long before it will be the first day of the Lunar New Year.

"It's not too early, we won't wait for anyone else, I announce that the decision will start directly!" Zheng Chun said, pulling out a chair and sitting directly on the main seat of the conference table.

This is a decision-making meeting.

The content of the decision, of course, is the question of whether the immersed tunnel should be re-docked.

[Manual measurement of the maximum transverse deviation of 17 cm, longitudinal deviation of 1 cm, the waterstop crimping is uniform, no water leakage]

This is the data in front of everyone.

And if you choose, there are only two.

Re-docking.

Or, leave it as it is!