Automotive Black Technology Chapter 1108: : An unsolvable problem!

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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, 70% of the construction progress of Line 1 has been completed, leaving only the section from the Convention and Exhibition Center to the Garden Villa area.

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

Why?

Tunnel leaks require not only draining out the seepage water, but also plugging it; water seepage more than ten meters below will cause severe moisture in the tunnel. This affects the service life of the mechanical equipment in the tunnel and greatly increases the maintenance workload in the tunnel.

In mountainous areas like Japan, water intrusion in tunnels often occurs. According to statistics, the maintenance cost of these leaking tunnels is on average more than twenty times higher than that of normal tunnels!

But if water seepage alone increases maintenance costs, it is actually a good thing for the Fuzhou City Government.

The geographical location of Fuzhou is similar to that of Tiancheng, both in northern China, where the lowest temperature in winter can exceed minus 30 degrees. In such severe cold areas, water leakage in underground tunnels can cause severe frost surge, thereby damaging the lining and waterproofing and drainage measures. The current location of Line 1 is still below the artificial lake. If such a situation occurs, the impact on the entire Line 1 will be too great;

Water leaks and freezes, which may invade the boundary and endanger the safety of the tram. If leakage occurs in the electric traction section, it will also affect the power wiring, cause insulation failure, short circuit, tripping, discharge and other accidents, thus threatening the personal safety of the tram and passengers.

However, for this subway line, there is something more serious than this.

That is... the stratum in this section is a pebble bottom layer, and above the stratum is an artificial lake with an area of ​​more than 2,000 square meters!

If the lake continues to expand... and eventually causes the lake to flood back, then the more than 8,000 cubic meters of water in the lake will mercilessly swallow up the entire subway line!

If that happens, things will be serious.

This is not just talk. Water 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 shutdown. You know, the subway is not like a road. If there is a hill here, just go around it. If there is a nail house here, just build a branch road.

Not to mention how much more work the redeployment project will cost, how much social power will be mobilized, how many practical troubles will be solved, and how many social contradictions will be coordinated to redesign the route. Even if the tunnels that have been dug are filled in, the losses will be huge.

The third company of China Railway 13th Bureau is also facing disaster.

What can be used to dig the underground love tunnel now is not a shovel or a pickaxe, but a shield tunnel excavator imported from Switzerland and worth more than 40 million.

What does this shield machine look like?

A large subway shield machine is actually like a huge cylindrical drill, with a diameter of more than nine meters and a total length of more than 60 meters.

This tunnel boring machine uses the shield entry method to excavate, integrating excavation, support and **** removal. It combines the functions of measurement, automatic correction, and construction of tunnels to achieve one-time forming of the tunnel.

In other words, it is like a huge drill bit that can dig a hole and at the same time put a layer of cement on the dug part to directly form a tunnel.

Using this tool for tunnel excavation and construction can start with the highest degree of automation, greatly reducing manpower and material resources, the construction speed is extremely fast, and it is not affected by the climate.

However, playing Ying'er also has a fatal flaw, that is... you can only advance, not retreat!

Unless the project is completed, it can be dismantled and lifted out from the terminal exit using a large crane.

Now, affected by chip collapse, pebble soil and leakage, this "big drill" worth more than 40 million has completely stopped in the tunnel. In a tunnel with no village in the front and no store in the back, if it gets soaked by water...it's hard to say whether it can be repaired or not.

More than 40 million yuan worth of equipment was scrapped. Zhao Fangshan, a division director... obviously couldn't resist it.

Seeing the heads of several construction engineering companies patronizing and glaring at each other without speaking or expressing their opinions, Secretary Han became angry.

He unzipped his black jacket, pinched his waist with one hand, nodded at these people with the other, and scolded: "When you came to the city to get the project, you were all so confident that your chests were so touching. Bang, I almost said you can go to the moon to work on projects! Why don't you say anything now? "

A skinny monkey-like man scratched his ears and said nonchalantly: "Secretary Han, this... his situation is different. You said that in this cold weather, the permafrost layer is estimated to be five or six meters, please let me know. How can we quickly dig up the ground to drain out the seepage water and rescue the machine?"

"That's right, Secretary Han, we can actually dig, but under the current conditions, if we dig seventeen meters underground...it will probably take ten or eight days at the earliest. By then...ahem Cough,"

Seeing someone taking the lead, everyone immediately started complaining.

"Enough!"

Feeling as if there were a swarm of flies surrounding his ears, Han Zhaojun became anxious, "A bunch of useless things, get out of here if you can't do anything, don't embarrass me here!"

Everyone stepped back a few steps without saying anything.

For a while, the scene fell into a deadlock. The scene was so embarrassing...

By this time, Li Fanyu, who was standing in the crowd, had completely understood this matter. He looked at the lake that was frozen into a thick layer of ice, pursed his lips, and was lost in thought.

"Since it's all leaking, why not drain the lake directly?" He murmured, perhaps too lost in thought.

"Who is talking? If you have any suggestions, please speak up! What do you mean by mumbling in the background?"

The angry Secretary Han heard someone stealing and immediately roared.

The people around Li Fanyu seemed to be scalded by boiling water, and they moved out of the way, exposing him.

Wo nest! ?

Seeing that the old man wearing training clothes even pointed at himself, Li Fanyu grinned - Damn it! Who are these people! ?

Li Fanyu didn’t know that Secretary Han’s temper was famous in Fuzhou.

Once at a party affairs meeting, the secretary slammed the table in front of reporters and scolded his subordinates: "I think the biggest difficulty in this matter is you! If there is no difficulty, what do you want to do? If you can do it, just do it for me. , if you can’t do it, resign and go home to **** this old woman’s crotch! Although our name in Fuzhou is rich, we are not rich enough to support so many useless officials!”

When I was inspecting a construction site, I grabbed the person in charge of the project by the collar, held the unqualified concrete in his hand, and yelled: "Is this your project? Get out of here, you don't need to do this project." Don't ask anyone to explain it to you. Anyone who gets involved with you is definitely not a good person. Remember, if anyone from the city to the province dares to say a word for you, I will report him directly to the procuratorate. ! ”

So in this three-quarter acre of land in Fuzhou, everyone knows not to mess with Secretary Han when he gets angry.

The people watching the excitement looked at Li Fanyu and gloated about his misfortune, saying to themselves, "You look so good today."

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

Then he took a deep breath and strode over.

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

"Director Li, I'm so ashamed that you, this distinguished guest... have seen a joke."

Han Zhaojun stood in front of the "trembling" Li Fanyu and smiled bitterly. 89