A few days later, Tao Decai came to see Duan Zhu again.
Tao Decai asked: "How is the parallel manufacturing device doing?"
Duan Zhu said: "I have been working overtime recently. It is almost set up and needs to be debugged."
Tao Decai said: "Then you have to hurry up."
Duan Zhu said: "Mr. Tao, why are you in such a hurry to make parts?"
Tao Decai said: "Recently, we are using a dynamic total mineral reserve detector for testing. After testing, the total amount of this mine is still decreasing."
Duan Zhu said: "Why does this happen? Is it because of mining?"
Tao Decai said: "There is a mining area that is sinking. It seems that there is a big hole underneath, and the mine is leaking downward."
Duan Zhu said: "Is it because other people are mining?"
Tao Decai said: "There are only a few of us mining here, no one else. Even if it is stealing, it will not be so fast."
Duan Zhu said: "Then do we need to go and take a look?"
Tao Decai said: "I'll find an experienced person to go down and have a look. I'll talk to Pu Lei."
They went to see Pu Lei.
Pu Lei said: "We took a rough look at the situation below. There are fixed metal plates on top, and pillar mines below. It is difficult to walk down there, and many places require metal plates hanging from above."
Duan Zhu said: "Liang Ting has designed a power-assisted machine, you can use it."
Pu Lei said: "What kind?"
"All kinds of things. Including those that increase leg strength and arm strength." Duan Zhu opened the picture, "There is this kind of thing that helps climb pillars."
Pu Lei said: "It has to be used. There are places where ordinary manpower cannot pass. Not all walking passages are installed inside."
Duan Zhu and others helped him organize the mechanical parts and put them into boxes by category.
Yang Fengbing saw Duan Zhu and the others sorting out the power-assisted machinery and asked, "What are you going to do?"
Duan Zhu said: “We need to go to the mines to check the problem of reduced mines.”
Yang Fengbing said: "You are not familiar with the underground. Find someone with experience to do it."
Duan Zhu said: "Yes. Go down to Pu Lei to check."
Yang Fengbing said: "When will he go? Do you need me to go with him?"
Duan Zhu said: "It's not necessary yet, he will go down and take a look first."
Yang Fengbing said: "Okay, then call me when you need me to go."
Duan Zhu said: "Okay, you can do your work first. Now we still need to study parallel manufacturing technology."
Duan Zhu found Pu Lei and handed him the power machine.
Duan Zhu told him, Yang Fengbing wants to go down with you so that we can take care of each other.
Pu Lei said, no need. I went with Peng Qing once. Let's go down and have a look with Peng Qing this time.
Peng Qing said, OK.
Pu Lei and Peng Qing put on power-assisted machines and gas masks. There are toxic and flammable gases underground.
Pu Lei and Peng Qing took the elevator to the mine, where underground roads extend in all directions. Follow the directions on the electronic map and walk inside. Reaching a narrow spot, there are metal plates and horizontal posts. He relied on the power-assisted machine to jump up and grab the pillar, swinging forward. Further forward, the horizontal columns gradually become sparse. The robotic arm extends in sequence, grabs the pillar, shortens, and then swings forward.
Reach the sunken portion indicated on the map. What we saw was the upper surface of the pillar mine, and there were no other abnormalities.
He continued to move forward. I saw some holes underneath, which seemed to have been dug recently. Just follow the mine. First go vertically down, then go horizontally for a while, and then go vertically up again. It is more convenient to rely on the power-assisted machine to clamp the wall and move it downwards and upwards.
In this area, there is the Pillar Mine to the west and the coal mine to the east. There is an entrance and exit at the far west, and the entrance to the coal mine is at the far east.
There are some passages in the mine that extend in all directions, but some places are too deep to get through. There is something between the pillar mine and the coal mine. He wanted to listen carefully to see if there was any roaring sound from the machine, but this time he heard no such sound.
It's really strange. If you can hear this sound like last time, you can use a detector to detect it in a certain direction.
So he wanted to continue moving downwards, tie himself with a climbing rope, use a power-assisted machine to grab the wall, and then slowly move downwards until he reached the bottom.
Peng Qing watched from above to avoid any surprises.
Peng Qing said: "Did you see anything down there?"
Pu Lei said: "There is another hole below. I will use a detector to look at the bottom of this mine first."
The detector was turned on for scanning, and the bottom of the entire mining area was still at its original position, with no subsidence. But the boundary line that appears near the bottom is different from the original. It seems that someone is really mining secretly.
But how was this mine transported? According to the current exits, they should mainly be east and west.
And I don’t know what these people secretly mine for.
Peng Qing said: "Did you find anything down here?"
Pu Lei said: "I found an abandoned cave entrance."
Peng Qing said: "What is an abandoned cave entrance?"
Pu Lei said: "It means that the hole was originally open and accessible, but recently it was sealed and unable to enter."
Peng Qing said: "Isn't it really strange that it was sealed recently?"
Pu Lei said: "Maybe so."
Peng Qing said: "Can you use any mechanical device to open it?"
Pu Lei said: "Okay, let's find a drill and excavator next time."
Peng Qing said: "Then how are these machines transported?"
Pu Lei said: "It's quite troublesome. We have to find a way to transport these large machines down when we come back. We'd better go back first. Now we can't open this hole with just the two of us."
After Pu Lei returned, he said to the others: "Do you know what else this pillar mine is used for?"
Tao Decai said: "This mine is basically used for prefabricated buildings."
Pu Lei said: "In addition to building this new city, is there anything else being built?"
Duan Zhu said: "I have never heard of this. Do we still need to build bridges and dams?"
Wu Tian said: "I think they are just doing prefabricated buildings. No one should steal the minerals."
Peng Qing said: "Maybe this material is used to make cars."
Yang Fengbing said: "Are you so sure that someone is stealing the mines and then building other things?"
Pu Lei said: "I am just guessing. I heard that some car thieves are building other new cities."
Yang Fengbing said: "Is it necessary to spend so much effort to build a new city?"
Duan Zhu said: "Maybe they want to seize resources and collect a lot of novel tools for themselves."
Yang Fengbing said: "I think you are overthinking it. The movement of the mine is also normal."
Duan Zhu said: "I also feel that we have thought too much and are just guessing."
Pu Lei said: "I suggest that the entrances and exits of these mining areas should be strictly guarded to see if there are other mine cars entering or exiting."
Tao Decai said: "Okay, I will talk to the mine management."
A few days later, Pu Lei asked how the observation situation was at the mine.
The administrator said: "The temperature of coal mine equipment is still rising sometimes and falling sometimes. The total reserves of the mine are still declining."
