Chapter 128

"Me." An old engineer with some gray hair in the second row of the conference table raised his hand and responded, "I have a problem."

Zheng Chun stretched out his hand and said, "Please speak."

"What I want to ask is, in the shield tunnel in the northern section of the Bohai Strait, will the tidal effect have an impact on the waterproof performance of the joints of its segments?" the old engineer said slowly.

For undersea tunnels, waterproofing is extremely important.

Whether it is a buried tunnel or a shield tunnel, the waterproofing of the joints is extremely critical.

However, the difference is that the joints of the buried tunnel are only at the joints of the tunnel tubes, while the shield tunnel is between the tube segments that build the tunnel.

The gaps are long and numerous, requiring a large number of rubber seals.

Therefore, this old engineer singled out the shield tunnel for discussion.

"What do you think?" After the old engineer finished asking the question, Zheng Chun, who was sitting on the podium, squinted his eyes and looked at the crowd.

"The tidal effect in the Bohai Strait is not weak, but the tidal level difference rarely exceeds two meters. According to my guess, the tidal effect should have an impact on the waterproof performance of the shield tunnel segment joints, but the impact is

How big should we use a rubber seal with water pressure resistance? I can't give a direct answer to this, it must be calculated." An expert in marine engineering answered after pondering for a few seconds.

"How about I leave this task to Professor Lu?" Zheng Chun said with a smile.

Professor Lu smiled bitterly and shook his head, "Gong Zheng, you have just assigned me a problem on the impact of strong earthquake action zones on the tunnel structure, and the problem in front of me is extremely complicated. I am really... overwhelmed!"

Zheng Chun knew that Professor Lu was telling the truth.

The current issue of the impact of tidal effects on the waterproofing performance of segment joints is indeed extremely difficult.

He glanced at the people in the audience and asked, "Is there anyone willing to take on this task?"

No one responded.

One reason is that this problem is really difficult.

But the most important reason is that in the meeting just now, most of the higher-level experts among the participants were assigned tasks by Zheng Chun.

If we were to take on this task again, there would inevitably be no guarantee that it would be completed in a short period of time.

The remaining experts with mediocre abilities do not have the confidence to complete this task.

The atmosphere became silent for a while.

Looking at the silence below, Zheng Chun didn't seem surprised at all.

He did not force anyone to complete it, but shook his head slightly and said, "In that case, then this task..."

Just when he was about to leave this issue to him to solve personally, a voice came from behind,

"Wait a moment!"

Everyone turned their heads and saw a handsome young man sitting in the corner of the back row.

Zheng Chun looked at Gu Lu with searching eyes, his expression calm and calm.

Gu Lu smiled harmlessly and said to Zheng Chun, "Gong Zheng, why don't you let me try this question?"

There was a flash of surprise in Zheng Chun's eyes, and he said, "Do you want to give it a try?"

"Yes." Gu Lu nodded heavily.

"Are you sure?"

"Yes, but not much."

"This is an engineering problem."

"But to me, it's more of a math problem."

A mathematical word problem.

Gu Lu silently added this sentence in his heart.

Zheng Chun is thinking.

His fingers kept tapping on the table.

However, Academician Li, who was sitting in the front row, spoke first.

Academician Li turned his head and looked at Gu Lu with a meaningful look, "I think Gu Lu can try this task."

Academician Guo said with a smile, "We need to give more opportunities to young people. I agree with Academician Li's suggestion and let Gu Lu give it a try."

"I think it's okay."

"I agree too."

Thirteen academicians, including Academician Guo, seconded Academician Li’s proposal.

Some experts in the back row were stunned and stared blankly at Gu Lu.

Who is this young man? What is his relationship with the fourteen academicians?

Why do all fourteen academicians speak for him?

Doubts came to everyone's mind one by one.

Zheng Chun also wanted to pass by the rostrum.

Regardless of whether Gu Lu has the ability to solve this problem, there are fourteen academicians standing behind him.

With their cherished talent, it is unlikely that they would just sit back and do nothing.

It can be said that entrusting this task to Gu Lu is not much different from entrusting it to fourteen academicians.

Then there’s nothing to worry about!

Zheng Chun waved his hand directly, "Well, since the academicians said so, I will trouble you, Gu Lu, to solve this problem."

Gu Lu's eyes narrowed, "I promise to complete the task."

"Wait a moment." One expert couldn't sit still and raised his hand.

"I don't know what Professor He is going to say?" Zheng Chun's plain eyes had a hint of sharpness.

Professor He originally wanted to point at Gu Lu and question why Zheng Chun entrusted such an important task to a young man.

But he knew that by saying this, he would be completely at odds with the fourteen academicians and Zheng Chun, the future academician, so he changed his words.

"Gong Zheng, I also want to try to solve that problem. Is it possible?" Professor He asked politely with a smile.

"Then why didn't you raise your hand when I asked you just now?" Zheng Chun asked.

Of course I don’t have confidence!

Although Professor He is a professor, his professional ability can only be considered average among the more than 100 experts present here.

He does not have the confidence to solve this tidal problem in a short time!

But since a young man like Gu Lu has taken on this problem, it would be too cheap for him to use lack of confidence as an excuse.

So Professor He hesitated for a long time without saying anything.

Zheng Chun did not ask further questions, but simply said, "If Professor He wants to try it, then just do it."

"This issue about the waterproofing performance of shield tunnel segment joints caused by tidal effects is left to you two, Gu Lu and Professor He." Zheng Chun looked at Gu Lu and then at Professor He, "Which of you two should be the first?"

It would be nice if someone could explain this problem to us."

"Then, today's seminar ends here, adjourn!"

The seminar ended on the fifth day and everyone left one after another.

After lunch, Gu Lu sent Academician Guo back to the hotel and then went back to the Bohai Sea Hydrological Research Center. He found the director of the research center and directly copied a copy of all the tide levels and corresponding time information of the Bohai Sea tides since the records began.

In addition, Gu Lu also copied all the data on the rock topography of the Bohai Sea bottom.

Then I hurried back to the hotel, turned on my computer and started working non-stop.

…………

"It still doesn't work!"

At night, Gu Lu rubbed his swollen eyebrows, shook his head and kept smiling bitterly.

He has been busy from two o'clock in the afternoon until ten o'clock in the evening.

However, the situation is not very optimistic for Gu Lu.

In Gu Lu's vision, he wanted to establish a longitudinal equivalent stiffness model of the tunnel and obtain the distribution of longitudinal bending moments and axial forces of the tunnel under the action of tidal loads by applying head pressures corresponding to different tidal levels.

But Gu Lu encountered a lot of resistance and was stuck with many problems, but he couldn't think of a solution.

Gu Lu is now in a state of blocked thinking.

"Sure enough, with my current level, it is still a bit too reluctant to challenge such a difficult problem." Gu Lu showed a bitter smile.

But just when Gu Lu was about to give up, close the computer and prepare to go downstairs for dinner...
Chapter completed!