Courtyard light

Chapter 332 Shield Machine Experiment (Third Update)
People feel refreshed during happy events, and Liu Hai also feels that his life is a bit boring, with nothing else to do except going to work. There is a woman who can spice things up and make him more energetic at work.

On Wednesday, Liu Hai sent the renderings of the 750CC super motorcycle sports car to the factory director.

"Director, I have another rendering here, but it's relatively simple. Let's show them over there." Liu Hai took out the golden wing copy again. This one has a simple line structure and is not colored. There are no details, but there are general parameters.

The renderings also had rough parameters. When Sun Aiguo saw these two pictures, he nodded: "I will go to the ministry in person right away."

All the design drawings for the bangs must be in the department and copied again.

"Then I'll start testing the tunnel boring machine." Liu Hai said when he heard that Sun Aiguo went to deliver it in person, he was not surprised.

"Let's go tomorrow. Are you going back here at night, or staying there?" Sun Aiguo asked again.

"It depends on the situation. If you have to work overtime, you won't come back. If you don't work overtime, you will come back."

"When you come back, let people from the Ministry of Armed Forces pick you up. Be careful."

"Thank you boss."

Liu Hai returned to the Maintenance Department, and half of the people from the Maintenance Department came back. Liu Hai took two people from the Maintenance Department to the Mentougou test site.

Simple living houses have been built here, and the electrical circuits have also been completed.

The site was also leveled, and Liu Hai explained to the two people brought by the maintenance department where the various parts of the shield machine should be stacked. Liu Hai explained in detail.

Then he returned to the maintenance department and started transferring parts there.

The large components piece by piece are hoisted by a crane in the workshop, fixed on a flatbed trailer, and then transported away.

At the test site, a 20-ton crane is already in place. These large components can be placed on the ground and then covered with canvas.

Then he told the remaining two people in the maintenance department how to transfer the parts here.

The test site is not only connected to electricity and water, but also has telephone lines. The surrounding area has been guarded by the factory's armed forces, and no one is allowed to approach.

A large shed was built at the test site, mainly to ensure the conduct of the test. After all, it likes to rain in summer.

When he came to the site, Liu Hai first looked at the experimental basis on the ground. The shield machine would be assembled on this basis, and then the experiment would be carried out on the rock surface.

Anchors have been drilled around the rock working surface and a circle of concrete has been poured to prevent the working surface from collapsing during work, after all, at the beginning.

Then there is the construction module, that is, after the tunnel boring machine excavates, the subsequent rock wall needs to be supported by the construction module.

Even if it is pure rock, it is much better to have building blocks, because pure rock also has some cracks, and it is likely that some small pieces will fall off after being under pressure for a long time.

Don't underestimate these small pieces, sometimes these small pieces bring disaster.

Of course, the specific subsequent construction technology and construction process need to be considered by the construction unit while doing it. Liu Hai does not know much about the construction technology.

It took two days to transport the parts. For this reason, this section of the road was also re-paved asphalt road.

It was precisely because of the transfer of parts that alerted the leaders within the ministry that Sun Aiguo did not report this matter.

But the shield machine has a lot of parts, and they are all relatively large.

This is how it is in Kyoto. The factory passes through some villages on the way to the test site. People are now very vigilant. They watch the flatbed trucks transporting things there, and they are still covered up, so they quickly report to the superiors.

"Have you started testing?" The leader in the department immediately called Sun Aiguo over. After listening to the report, the leader was a little dumbfounded.

"Assembly has started. Comrade Xiao Liu said it might take two months, and the horoscope has not been written yet, so I did not report it, lest the leader be happy in vain." Sun Aiguo nodded and said.

"You don't believe in yourself, and you still don't believe in Comrade Xiao Liu?"

"And this kind of large equipment will definitely be operated by engineers in the future. If they are not allowed to participate in assembly, how will they maintain it in the future?" the leader in the ministry said angrily.

So that afternoon, there were more than 200 people at Liu Hai's testing site, and these more than 200 people were all railway soldiers.

The two leading technical backbones looked at the scene and their jaws dropped. With so many iron lumps and the 20-ton crane, it was no small scene at first glance.

After chatting with Liu Hai for a while, Liu Hai hung up the drawings for everyone and gave a general introduction.

"This tunnel boring machine actually appeared very early, but I improved it partially and used hydraulic drive."

"I personally don't know much about engineering. I only know about this mechanical equipment. I have to ask the two of you for guidance during the test." Liu Hai said very modestly.

The two technical backbones were dumbfounded. It has a diameter of ten meters and a maximum traveling speed of five meters per day. Of course, this is only the design data.

"A motorcycle factory is indeed a motorcycle factory. If this kind of heavy machinery is successful, it can be said to be a magical tool for our engineering construction."

"Chief Liu, you're welcome. We have never seen such advanced equipment in all our years of engineering technology." "With this kind of equipment, the safety of our personnel can be greatly improved." The two technical backbones are both at the regiment level. , I admire the motorcycle factory from the bottom of my heart. This factory actually built such a big piece of equipment without making any noise.

So I started assembling it with the help of more than 200 people. As I started assembling the bangs, I explained to them what the parts were for and what they did.

From that day on, leaders kept coming, including leaders from several ministries the next day. The boring machine was involved in many projects, from ordinary tunnels to missile silos to some civil air defense projects.

Even the big leaders of the railway come here every now and then to take a look. Once they do, they feel itchy and want to see more.

At first, these big leaders only came to visit every three to five days, and later they basically came to visit every day after get off work.

So Liu Hai couldn't go home, so he had to eat and live with these people. So many leaders come to see you every day, and you still want to go home. What else are you thinking about?
Looking at the shield machine that was gradually taking shape in the shed, it was a big thing with a diameter of ten meters, a hydraulic column as thick as a thigh, and rows of hydraulic pipes of different thicknesses.

However, this place also successfully attracted the attention of some intelligence officers.

Some intelligence officers occasionally saw a ten-meter-diameter iron lump with one end inside a cave.

Some intelligence personnel believe that this is a new type of weapon, possibly a giant cannon.

Things like giant cannons still existed during World War II, and they were very famous.

Of course, some people think that these are newly built missiles from the mainland. After all, they are deployed around Kyoto.

Suddenly there were more intelligence spies around, and the risk of exposure to these people was of course greater.

It took Liu Hai two weeks to assemble the entire equipment. During the assembly process, Liu Hai also had to explain to these engineering and technical personnel what this thing is used for and how to perform maintenance in the future.
Finally, the day came for the official test to begin. On this day, leaders gathered here, leaders from the ministry, leaders from the army, and leaders from the motorcycle factory.

When the ten-meter-diameter shield machine began to rotate and slowly contacted the rock wall.

With a clicking sound, the hydraulic column on the shield machine slowly exerted pressure on the machine in front.

From the middle of the shield machine, the conveyor belt kept running, and gravel appeared inside.

These gravels are left behind and are not like each other. The gravels are continuously transported out, and the water used to cool the machine is continuously pumped in by the machine. This is used to cool the cutter head.

The leaders around looked at the ten-meter-long shield machine, which was rotating slowly. It seemed relatively slow, but they were also very nervous when they looked at the gravel in the conveyor belt.

The machine ran continuously for an hour and only advanced ten centimeters.

Then Liu Hai organized personnel for maintenance, mainly directing his subordinates to do the work, especially the more than 200 engineering soldiers who joined later.

Some interfaces are a little loose. This is inevitable. After all, it is the first time to conduct an actual test.

During maintenance, I also use a notebook to write down where?When and what time are inspections performed, and whether any maintenance is performed.

Then a second trial was conducted, this time at a faster speed.

This time, it is obvious that the shield machine rotates faster and there is more gravel on the conveyor belt behind.

From the start of the experiment at seven in the morning to seven in the evening, the machine ran for nine hours, and the rest of the time was shut down for maintenance.

The shield machine has advanced a distance of two meters, and one meter of these two meters has been laid with modules.

"Okay, great!"

"Can your motorcycle factory produce a large number of people?" The person in charge of the railway looked at the tunnel that was formed in one go, and his voice was a little excited.

No one knows how dangerous it is to dig tunnels better than him, especially now that all kinds of machinery and equipment are in short supply.

It can be said that a lot of people are lost every year, and there is nothing we can do about it. Our country has a large territory, complex terrain, and most of the border areas are mountainous areas.

"Does this count as a success?" Sun Aiguo was a little unconfident. How about two months as promised?

"We still need to continue testing. Maybe the machine will encounter other problems that need to be solved." Liu Hai has been very tired in the past two weeks. He basically lives here for food and accommodation, being with a bunch of grown men, not to mention how difficult it is. .

"Is there any problem with the integrity?" the leader of the army asked.

"There is not much problem with the integrity, but the user manual needs to be used and written at the same time. I can't help much with this. I don't know much about engineering." Liu Hai looked at some engineers working inside the shield machine. Drilling rod.

When the shield machine advances one meter and stops laying the modules at the back, it is necessary to drill the front with a small drill bit to see what geological conditions are ahead. If there is no problem, the shield machine will continue to operate.

The operation of this shield machine is quite complicated, because it is all mechanical, and it advances while mining. Behind the shield machine is a hydraulic column that holds up the steel plates. The entire tunnel is supported by steel plates. On the one hand, it provides support to the shield machine. It provides support itself and also supports the tunnel. After the steel plate is moved, the cement module is immediately laid behind it.

"Then we can let the motorcycle factory manufacture parts?" the person in charge of the railway asked with an expectant tone.

"Okay." Liu Hai thought it was not a big problem, so he nodded, which would save time.

(End of this chapter)