Hearing that there was an accident during the excavation of the grave, Li Mengxi did not dare to let others do what they wanted. None of them had ever robbed a tomb and had no idea of ​​the dangers of tombs. Acting recklessly could easily lead to accidents.

There may be rice dumplings, grain, and various dirty things in the tomb.

Out of caution, Li Mengxi spent a lot of effort to find some glutinous rice and picked up a peach branch. Zhang Ning had a tube of cinnabar left by Zhang Jiao. This was Zhang Jiao's thing. Zhang Jiao was a Taoist priest, maybe.

He was very good at subjugating demons, so he took Zhangjiao's cinnabar with him.

Li Mengxi had a small bag of glutinous rice tied around his waist, a small bag of cinnabar tied around his wrist, and a peach branch in his hand. He was fully armed. Even if there were really dirty things, he could barely protect himself.

Li Mengxi personally led the team to the cemetery again. Before digging again, he looked at the collapsed ground and asked with concern about Ren Ba's situation when he was in danger.

Ren Baxin replied calmly, "I dug and dug until it collapsed with a loud bang."

Ren Ba's speech was unclear, and Li Mengxi scratched his head when he heard it.

The tomb passage was in danger of collapsing, so Li Mengxi thought about whether there was any way to prevent it.

When I think about it, it really makes sense. Drilling a tomb passage is actually the same thing as digging tunnels, mines, and tunnels. They are all civil engineering operations.

Li Mengxi thought that in the subway tunnel, there were huge pillars supporting the bottom to prevent the tunnel from collapsing. The same could be done when digging a tunnel. You could also use things to support it. For example, you could bring some wooden boards and some supporting sticks.

This is the first way.

The second method is to use iron barrels, one after another, dig a section and add another iron barrel forward. In this way, people are protected by the iron barrels and are not harmed by collapse. This is a shield machine

ideas.

It is necessary to make professional tools for tomb robbing, but considering the cost issue, iron barrels are difficult to make, the cost is high, and transportation is inconvenient. It is not as good as a support structure of wooden boards and wooden sticks.

A suitable support structure is roughly like this - the wooden board is three feet wide, as wide as a person's shoulder, and four feet high, which is similar to the height of a person squatting down. The wooden board is as long as half a person's height, and the wooden sticks used for support are

, wooden sticks between three feet and seventy-eight feet, plus thin wooden boards for paving the height of the base are enough.

After thinking about it, Li Mengxi realized a problem: What kind of robbery hole is the strongest?

It seems to be a circular robbery hole...

It is also round. Although he has never dug a robbery hole and Li Mengxi has no experience in tomb robbery, he just intuitively feels that the circle is the most powerful shape.

Circles, eggshells, turtle shells, and arches all have the nature of a circle.

With a new idea, Li Mengxi said to Ren Ba, "Next time, dig the hole into a round hole. It will be round and strong." Ren Ba nodded.

Ren Ba saw everyone coming for a while, so he suggested that he go down and try digging again.

"Be careful." Li Mengxi reminded kindly.

There are only six people in the tomb robbing team, not to mention Li Mengxi and Jian Yong. The remaining three Feng Shui masters are all scholars. Only Ren Ba is an illiterate craftsman. Ren Ba has a low status, so he has to do it.

live.

Tomb robbing is a difficult skill and is bound to be difficult.

Ren Ba changed places and dug vertically. All the excavated soil was thrown out. The digging was more than one person deep. He dug sideways in the hole again. After digging for a long time, Ren Ba and Ren Ba were no longer visible.

Li Mengxi suddenly realized something. It might not be difficult to dig a hole underground, but as you go down, the light will get darker and darker, and there will be a lack of oxygen.

Li Mengxi quickly shouted for Ren Ba to come out.

After a while, a disgraced Ren Ba crawled back upside down.

"Commander, what do you want me to do?" Ren Ba asked, looking up in the pit.

"Are you feeling depressed down there?" Li Mengxi asked.

"A little bit panicked."

It was indeed neglected.

The light problem can be solved with a lamp. The oxygen problem, how did ancient tomb robbers solve it?

When the tomb passage is more than ten feet deep underground, can the air reach the ground? It should be possible.

Not long ago, I was talking to Zhang Fei about catching rabbits. Zhang Fei said that if you smoke the rabbits with fire, the smoke will not easily enter the hole.

The solution at that time was to use a bellows, connect a bellows to a pipe, extend the pipe into the hole, and pull the bellows to blow the smoke deep into the rabbit hole.

With the method in hand, Li Mengxi stopped digging graves.

Back in the city, he asked a craftsman to make a large blower. The reason why he used a blower instead of a bellows was because the sealing performance of the bellows was not good enough and air leaked.

The air blower is an existing technology and is not difficult to make, but the air supply pipe is difficult.

To make an airtight long pipe that is tens of meters or even longer, the only materials available are metal, clay, leather and other limited materials.

But among these materials, long metal pipes can be made tens of meters long regardless of the work, but the flexibility is too poor, and the flexibility of clay is also poor. As for leather materials, it is extremely difficult to sew the leather without leaking at all.

After much thought, Li Mengxi only thought of rubber, and only rubber was dense enough and soft and light enough. But the problem was, where to find rubber.

After thinking hard about all available materials, I finally came up with paper.

Use glue and tough mulberry paper to roll up one section at a time to make a long tube, and then brush it with a layer of tung oil to enhance the air tightness. In this way, a long enough and air tight tube is made. Moreover, the paper has

Flexible enough, it can barely replace rubber tubes.

The first ten-foot-long paper tube was ready. Li Mengxi twisted it around, connected one end to a blower, and pulled the blower to blow. He observed at the other end that a weak wind was blowing out.

As long as there is wind, transporting air is not a problem.

Li Mengxi took the blowing equipment and set off again.

Returning to the cemetery again, I dug eight holes, pulled up the paper tube, picked up a small oil lamp, and started digging again.

This time, perhaps because the air supply device was too good, or perhaps because the oil lamp could see clearly, Ren Ba couldn't come out after digging for a long time, which made Li Mengxi think that something might have happened to Ren Ba.

Near sunset, Ren Ba climbed out of the cave. When he came up, he looked like a native, with dust on his clothes, hair, face, and nostrils.

This chapter is not finished yet, please click on the next page to continue reading the exciting content! I asked Ren Ba if he was feeling depressed. Ren Ba said that feeling depressed is nothing. It means that the soil has been dug up and there is no place to throw it away. He can only throw it away, and the more he throws it away, the more he feels depressed.

The more there are, the more people don’t dare to let go, for fear of blocking their retreat.

As soon as Li Mengxi heard about this situation, he immediately understood that to dig a robbery hole, you have to transport soil, and you have to work together. One person is digging the hole in front, and the other is responsible for transporting the soil out.

In order to facilitate the transportation of soil, it is necessary to have a simple soil transportation tool - pocket.

The next day, there were two people digging the hole. Ren Ba was digging in front, and Feng Shui master Guo Pu was following behind with an oil lamp and a bag. Ren Ba was digging in front and pulled the soil behind, and Guo Pu was holding the soil in his pocket.

Then fill the bag more than half way, then pull the soil and slowly pour it back, slowly crawl to the entrance of the hole, then climb up and dump the soil at the entrance of the hole, just like a woodchuck.

From this, Li Mengxi realized a problem. For reasons of privacy, the soil excavated by tomb robbers could not be piled at the entrance of the cave, but should be scattered elsewhere.

With the help of useful air supply equipment and oil lamps, there is no obstacle to digging holes down there.

After the excavation work continued smoothly for two days, we finally encountered another problem.

Ren Ba felt a sudden fear as he dug. He suddenly realized that he didn't know where he was digging in the southeast, northwest, and northwest directions.

Ren Ba arched out in panic, not daring to dig any more randomly.

Underground excavation is easy to go in random directions, and it is difficult to judge the direction and thus it is impossible to dig accurately.

To determine the direction, use a compass or compass.

Ren Ba was only aware of the direction problem, but Li Mengxi then realized that digging the tomb tunnel was a three-dimensional operation. In addition to the plane direction, there was also plane distance and vertical height.

I only knew the direction, so I dug in one direction for a long time, but it turned out that I dug too far, and the further I dug, the farther I went.

If you can't be precise, you can't be efficient.

Digging the tomb passage requires a positioning method, which requires the ability to accurately locate the location of the tomb to ensure accurate excavation toward the tomb.

Everyone gathered together to discuss, and Li Mengxi came up with the idea of ​​pulling a rope to dig into the ground, marking the length of the rope, and using the length to determine whether he had gone astray. A ten-foot-deep tomb and a hundred-foot-long tomb passage dug must have gone astray.

The disgraced Ren Ba thought for a while, then looked at the crowd and said, "Otherwise, we wouldn't be able to do anything like this.

Didn’t we use a shovel to explore the sealing soil?

Just follow the hole that the shovel finds and dig straight down."

Li Mengxi's eyes lit up, hey? This is a method. If you follow the hole dug by Luoyang's shovel, there will be no positioning problem.

Why did we have to dig the hole diagonally before...

After walking halfway down the wrong road, everyone seemed to be lucky enough to find the right way.
Chapter completed!