Chapter 694

Ten minutes later.

Wearing various protective equipment, Gu Lu and Engineer Sun sat on the submarine and reached the Bohai Tunnel located 28 meters under the sea.

Through the gate on one side, Gu Lu entered the E30 section of the undersea tunnel.

There is oxygen in the tunnel.

Gu Lu took off his breathing mask and fastened the walkie-talkie to his waist.

"Chief Engineer Zheng, I have come underwater." Gu Lu said into the headset.

"Copy that." Zheng Chun's steady voice came from the intercom.

"Professor Gu, you go to the interface first and investigate the specific conditions of the interface." Zheng Chun ordered on the intercom.

Gu Lu nodded, "Understood."

then.

Gu Lu walked along the pipeline to the interface between the E30 pipeline and the final joint.

At the edge of the interface, Gu Lu touched it with his hand.

"General Engineer Zheng, the situation here is the same as in the report. The longitudinal deviation at the interface is very small, but the lateral deviation is very large. It should be 17 centimeters. However, the waterstop is evenly pressed and I have not found any.

Water leaked in."

Gu Lu reported the situation truthfully.

Generally speaking.

The situation at the interface is almost exactly the same as the report received by Zheng Chun.

There is a large lateral deviation at the interface, but it does not leak.

but……

The lateral deviation of seventeen centimeters cannot be corrected through subsequent welding processes.

Let it exist.

It will always be a hidden danger.

After hearing Gu Lu's report, Zheng Chun took a deep breath.

"Professor Gu, please stay where you are first and wait until the workers are in place before we officially start the reconnection work."

"clear."

maritime.

The command room on the immersed tube installation ship.

After Zheng Chun ordered Gu Lu to stay put, he turned his eyes to the equipment supplier who connected the hydraulic system on the conference table, frowned and spoke.

"Give me an answer, is your company's hydraulic system allowed to perform another re-docking operation?"

The equipment provider looked embarrassed, "Theoretically, it's possible, but..."

"Just what?" Zheng Chun's brows furrowed even more.

"It's just that I need to recalculate the water injection amount and time required when the water pressure in the tunnel closing chamber increases again to the same as the water pressure outside the tunnel. In addition, I also need to calculate the sealing of the drainage of the joint chamber.

The pushing beam is subjected to the bending load of external water pressure, and how much friction the bearing has under this load." The equipment supplier said hesitantly.

"Then stop the ink stains and hurry up and do the math!" Zheng Chun's tone became a little higher.

"I need time." The equipment supplier said weakly.

"How long will it take?" Zheng Chun asked.

The equipment supplier weakly raised a finger and said, "At least...an hour."

The veins on Zheng Chun's forehead popped out.

Seeing Zheng Chun's angry look, the equipment supplier explained repeatedly, "I'm just a small leader responsible for sales docking. I'm not a talent who specializes in this area. My strength is limited. I can only last so long at the earliest."

.”

"Then why are you talking nonsense? Hurry up and figure it out!"

"Yes, yes!"

After venting his anger, Zheng Chun held the walkie-talkie and pressed the call button.

"Professor Gu, I encountered some problems here. I'm afraid the official re-docking time will be delayed by an hour."

"no problem."

…………

An hour later.

In the command room, while Zheng Chun kept pacing back and forth, the equipment supplier finally calculated all the data in a hurry.

"General Engineer Zheng, the data, the data is out!"

The equipment supplier was sweating profusely and handed a piece of paper with several sets of numbers written on it to Zheng Chun.

Zheng Chun took it and glanced at it.

then.

Zheng Chun took the data and walked to the podium.

On the screen in front of the command podium, what is displayed is the interface between the final joint and the E29 and E30 pipelines.

"Lao Sun, Professor Gu, next, you two follow my command."

E30 interface.

Gu Lu was wandering around in a bored state when he heard Zheng Chun's voice and suddenly became excited.

Finally...is it about to begin!

Gu Lu rubbed his hands and a glint flashed in his eyes.

"Act according to the original plan!" Zheng Chun sat in the command room and issued the order.

"yes!"

"yes!"

Gu Lu and Engineer Sun both claimed it was.

interface.

Gu Lu looked at the dozen welders in front of him, pointed at the opening in front of him, and commanded, "Masters, please re-weld this steel-sealed door!"

If you want to reconnect, the first thing to do is to re-weld the opened steel door.

Then, seawater is injected into the combining cavity so that the water pressure in the combining cavity is the same as the pressure of external seawater.

Gu Lu stood behind, holding his arms and watching the workers welding the steel door.

The workers' working surface is very small, so welding is very difficult.

after all……

Opening it is easy.

But it would be much more difficult to weld it together again.

Fortunately

This group of welders are all professional welding technicians.

Most of them have obtained certificates from the American Welding Association.

A little less than half an hour later.

Steel door welding completed.

but……

In order to prevent loose operating tools from falling into the grooves, Gu Lu and the workers checked whether there were foreign objects in the grooves with their bare hands.

Because the groove is the hatch, even if it is a length of rope, a wrench, a few screws, or a piece of angle steel, any small item falling will affect the seal.

After checking that there are no foreign objects in the groove, the first step of re-docking is completed.

However, this is only a small step.

What comes next is the highlight.

Follow the plan.

The next step is to inject seawater into the coupling cavity to make the water pressure inside and outside the coupling cavity consistent.

Gu Lu has already obtained specific data from Zheng Chun.

Follow the data.
To be continued...