This time, not only were all the engineers present, but even the officials sent people down.

And Meng Design, the chief designer of the Zhuhai-Hong Kong-Macao project, also came to the scene with a serious expression.

In such a situation, Chief Engineer Lin also cautiously emphasized again and again: "We all know what we have paid and gained in the past few years, and what are we for?

In the absence of existing technical support and the fact that the experience of other countries cannot be replicated, they have succeeded in getting to the point.

How many days and nights of independent technology research and implementation, and how many skilled workers' sweat and hard work, support them all the way forward.

This road, since the beginning of the walk, there is no way back.

"Chief Engineer Lin, I understand what you said...... an official staff member was apprehensive and still a little hesitant: "But internationally, the installation and integration of the last section of the immersed tube is under traditional technology...... It will take at least eight to ten months......"

He glanced at Meng Design and Lu Zi'an, and said stiffly: "But our project is ...... It's only a day......"

So, is it really going to work?

"This leader, what I need to report to you is that our unmanned sinking docking system has fully realized wireless applications. Chief Engineer Lin didn't even want to waste time on such a stupid question, so he flipped out a booklet and handed it over: "If you are curious, you can learn more about it." ”

"In addition, there are many data in foreign cases, which can no longer provide us with reference. Chief Engineer Su propped his right hand on the table, and knocked lightly with his left hand: "Our bridge can be said to be the first example of "the master". ”

Everyone looked up at him, their eyes full of joy and pride.

"We use the world's best high-performance epoxy steel bars, stainless steel bars, high-performance offshore concrete, reasonable structure, factory manufacturing, etc., and set the best durability technology at home and abroad to ensure that the Hong Kong-Zhuhai-Macao Bridge meets the standard of 120 years of use, which is unique in China. ”

If they still had the idea of learning from foreign cases at the beginning, then when they really took over the project and thoroughly understood all the technologies, they have now innovated more than 400 new technologies, and even have to queue up to apply for patents......

The overall design and key technologies are all independently developed, and scientific research and innovation can be described as the meaning of the topic in the construction of the Hong Kong-Zhuhai-Macao Bridge.

To put it mildly, many of the current foreign technologies have lagged behind them.

In this case, do they still need to measure their success by other people's standards?

"No, we don't. ”

Chief Engineer Lin raised his head and stood straight: "We have the most united team, with the latest and most rigorous professional technology, and even, we have formulated more stringent acceptance standards than the international one, our goal?"

In the audience, everyone had clenched their fists, and they were honored, shouting in unison at this moment: "120 years!"

Not eighty years, not a hundred years.

Their goal is 120 years!

With such emotions, everyone remained calm until the last section of the immersed tube was transported to the mooring area.

Step by step, clean and neat.

Every detail is monitored in place.

Unmanned underwater docking relies on each other's tacit understanding and the fineness of the instrument.

"Everyone, all in place!" Lu Zi'an stared at the screen, and his voice was decisive and calm: "Let's start!"

As they did in the conference room, everyone had a clear division of labor, and each action was fast and precise.

This time, the docking went more smoothly than expected.

They used greater drag and skill to overcome the effects of currents.

The immersed tube is too long, and it is even more difficult to control the attitude of the "aircraft carrier" in towing like an extended version? Every time the ribbon cable moored by the pipe section is affected by the flow speed and direction, and the danger of anchoring increases sharply? With the experience of several successful towing attempts, this is not a problem.

The deep-water unmanned sinking docking measurement and control system they newly developed has achieved the world's first wireless application, which has become the innovation and highlight of the floating installation.

With the professional orders of Lu Zi'an and Su Lin, the two chief engineers, the last section of the immersed tube was finally successfully docked.

"The offset is ...... 0.2 mm. ”

Although it is not as accurate as the most accurate, it is already much more accurate than their original calculations.

For this result, everyone said that they were very satisfied and satisfied.

It's just that Lu Zi'an is still a little worried.

The height difference of this immersed tube is a bit large, and it is indeed not easy to achieve this accuracy in docking.

It's not realistic to change, but if you don't......

He carefully calculated the data and said with some concern: "If this is the case, in the end, we will not have much room for the accuracy of the final joint......

Hearing his words, Chief Engineer Su was also a little worried, but still shook his head: "It's okay, there must be a road before the car reaches the mountain, and it will be closed next month, don't worry." ”

What he didn't say was that the current data is really very rare.

Consultant Lu felt that there was not much room left for them, but in fact, if according to the calculated data, as long as the height difference of the final joint was controlled within 15mm and the water was successfully stopped, the entire undersea tunnel project would have been very successful.

It's just that he also knows in his heart that Consultant Lu has too high requirements for himself......

He didn't have the strength to Lu Zi'an, but raised his hand: "Let's go, I'll ask everyone to rub it well!"

Under these conditions, he can only promise this kind of reward that does not itch or hurt.

They were all celebrating, but Lu Zi'an locked himself up and decided to conduct a more refined analysis of Helong.

After all, it's the end of it!

He didn't want to be anticlimactic, he hoped to do his best to hand over the most perfect answer.

While Lu Zi'an was immersed in hard research, good news also came from other engineering sections.

The construction of the artificial island has been almost completed.

With the addition of many technicians, the accuracy monitoring is more accurate and easy, and the speed of the project is naturally accelerated.

In the turbulent waters, which were thought to slow down, the construction period was much faster than expected due to the recent sunny weather and the absence of waves and typhoons.

A series of good news made the smiles on everyone's faces unable to hide.

"I feel like victory is in sight!"

"Hey, I feel like I'll be able to go back to see my son in a while! My son has gained weight again, you see, these little arms and legs, ouch......"

Everyone's face was filled with a happy smile.

During the Spring Festival last year, none of them went back.

But this year, they felt they should be able to catch up.

With the completion of other sections, the installation of the final joints of the cross-harbour tunnel section is also imminent.

In the end, Lu Zi'an even did a few all-nighters in a row to assign every detail in place.

Together, they chose the best weather to complete the closure of the undersea tunnel project.

All the people in the queue looked solemn as if they were going out, looking forward to it and nervous at the same time.

Unlike other immersed pipe sections, the final joint components are constructed with a "sandwich" steel shell concrete.

It is wedge-shaped, 11.4 meters high, 9.6 meters long and weighs 6,000 tons.

After such a "big guy" enters the water, it will also be affected by ocean currents, buoyancy, etc., and its attitude will change.

On top of that, they don't have a second chance.

Helong, it must be successful the first time!