The reality is actually far more severe than people expected.

This subway passage is a very important section of Fuzhou Metro Line 1. At present, the project progress of Line 1 has been carried out, and only one section from the exhibition center to the garden villa area is left.

The water seepage incident at this time is definitely a fatal mistake for the entire project!

Why?

Water leakage in the tunnel not only drains the seepage, but also blocks the water; seepage in more than ten meters below will cause serious humidity in the hole, which will affect the service life of the mechanical equipment in the hole, thereby greatly increasing the maintenance workload in the tunnel.

In mountainous areas like Japan, water inlets often occur. According to statistics, the maintenance cost of these tunnels that leak is more than 20 times higher than that of normal tunnels!

However, if water seepage alone increases the maintenance cost, it is actually quite good for the Fuzhou Municipal Government.

Fuzhou's geographical location is similar to Tiancheng, both in northern China, and the lowest temperature in winter can exceed minus 30 degrees Celsius. In such a cold area, leakage in underground tunnels will cause severe freezing, which will damage lining and drainage measures. The current location of Line 1 is still below the artificial lake. If such a situation occurs, it will have a great impact on the entire Line 1;

Water leakage and freezing may invade the limits and endanger the driving safety of the tram. If a leakage occurs in the electric traction section, it will also affect the power wiring, cause insulation failure, short circuits, trips, discharges and other accidents, thus threatening the personal safety of the tram and passengers.

However, for this subway line, there are more serious things than this.

That is... the strata in this section is the base of pebbles, and above the strata is an artificial lake with an area of ​​more than 2,000 square meters!

If ** continues to expand... eventually leads to the backflow of lake water, then the more than 8,000 cubic meters of lake water in the lake will ruthlessly swallow up the entire subway line!

If that happens, things will be a big deal.

This is not just a statement. The seepage in underground tunnels is now quite serious.

The situation facing the Fuzhou Municipal Government is that the entire Metro Line 1 may face a complete suspension. You should know that the subway is not like a road. If there is a mountain bag here, you can go around it, and if there is a nail house here, you can build a fork.

Not to mention how much more labor it takes to re-deploy the project, how much social forces it takes to redesign the route, how many practical troubles it solves, and how many social contradictions it coordinates. Even if the tunnel that has been dug is filled in, the losses will be huge.

China Railway Thirteenth Bureau Third Company is also facing a catastrophe.

What is available for digging the underground Ai Tunnel now is not a shovel, pick, and broken leather jacket, but a shield tunnel excavator imported from Switzerland worth more than 40 million yuan.

What does this shield machine look like?

The large subway shield machine is actually like a huge cylindrical drill bit with a diameter of more than nine meters and a total length of more than sixty meters.

This tunnel boring machine, which uses the shield method to excavate, integrates excavation, support and slag output. It integrates measurement, automatic correction, and builds tunnel laying functions, and can realize the first forming of the tunnel.

In other words, it is like a huge drill bit, which can be used to apply a layer of cement to the dug part while digging, thereby directly forming a tunnel.

Using this thing to conduct tunnel excavation and construction can start construction with the highest degree of automation, greatly reducing manpower and material resources, and the construction speed is particularly fast and not affected by the climate.

However, there is also a fatal disadvantage in playing around, that is... you can only advance, but not retreat!

It can only be disassembled unless the project is completed and lifted out of the terminal outlet using a large crane.

Now, affected by the cracks, pebble soil layers and leakage, this "big drill bit" worth more than 40 million has completely rested in the tunnel. In the tunnel where there is no village in front and no shop in front, if it is soaked in water... it is hard to say if it is not repaired properly.

More than 40 million of equipment were scrapped, and Zhao Fangshan, a director... obviously could not resist it.

Seeing several heads of construction engineering companies staring at the big eyes, not speaking or expressing their opinions, Secretary Han became angry.

He pulled the zipper of the black jacket open, pinched one hand on his waist, and pointed the other hand at the other, scolding: "When you came to the city to get projects before, you were all so confident that you could hit the chest and almost said that you could go to the moon to do engineering! Why don't you say anything now? You're all mute?"

A thin monkey-like man grabbed his ears and said embarrassedly: "Secretary Han, this... his situation is different. You said that it is very cold and cold, and the frozen soil layer is probably five or six meters long. How can we quickly dig the ground to drain the seepage and rescue the machine?"

"That's what Secretary Han, we can actually dig, but under the current situation, if it digs into the ground for seventeen meters... it will probably take ten or eight days at the earliest. At that time... cough cough,"

Seeing someone taking the lead, everyone immediately complained.

"Enough!"

Feeling that he felt like a group of flies surrounded by his ears, Han Zhaojun was anxious, "A bunch of useless things, if you can't do it, get out. Don't embarrass me here!"

Everyone took a few steps back awkwardly and stopped whining.

For a moment, the scene was in a deadlock. The scene was once awkward...

At this time, Li Fanyu, who was standing in the crowd, had completely understood the matter. He looked at the lake that was frozen into thick ice, pursed his lips, and was fascinated.

"Since it's all leaking, why not just empty the lake water?" Maybe he was too confused and murmured.

"Who is talking? If you have any suggestions, stand up and say it! What is the point of mumbling below?"

Secretary Han, who was angry, heard someone stealing and immediately roared.

The people around Li Fanyu seemed to be small fish scalded by boiling water, and they "brushed" and exposed him.

Nest!?

Looking at the old man wearing a training suit just now, even pointing at him with his fingers, Li Fanyu grinned - Damn! Who are these people?

Li Fanyu didn't know that Secretary Han's temper was notoriously irritable in Fuzhou.

Once at a party affairs meeting, the secretary slammed the table and scolded his subordinates in front of the reporter; "I think the biggest difficulty in this matter is you! What do you want you to do without difficulties? If you can do it, you will just do it well for me. If you can't do it, you will quit your job and go home to get into the crotch of the old woman! Although there is a wealthy name in front of our Fuzhou, it is not as rich as that of raising so many useless officials!"

When I was inspecting the construction site, I grabbed the collar of the project manager and held the unqualified concrete in my hand, shouted loudly: "This is your project? Get out of here quickly, you don't have to do this project! Don't ask someone to explain it to you. Those who can get involved with you will definitely not be good people. Remember, from the city to the province, if anyone dares to say something for you, I will report him directly to the procuratorate!"

So on this acre of three-point land in Fuzhou, everyone knows that when Secretary Han gets angry, he can't mess with him.

The people watching the fun around him were gloating when they looked at Li Fanyu and said to him, "I'm going to be nice to you today."

Han Zhaojun was stunned when he saw Li Fanyu in the crowd.

Then he sighed deeply and walked over.

Just when everyone thought that this young man who was talking nonsense was about to be scolded by Secretary Han.

"Dr. Li, I'm ashamed. I'm going to let you... look at a joke."

Han Zhaojun stood in front of Li Fanyu who was "shivering" and smiled bitterly.
Chapter completed!