Chapter 553 Cave collapse! (Additional update, 510)

Big camphor tree base.

At dawn, Xiao Jun came to the wall.

The uncle on duty found Li Yu who was doing his morning jog.

Li Yu wiped off his sweat and let Xiao Jun and others come in wearing his undershirt.

Xiao Jun said simply and directly to Li Yu: "Mr. Li, we are going to the steel plant today. There is something we need your support for."

"What's the matter?" Li Yu raised his head and asked.

Xiao Jun looked at Li Yu and said:

"I heard from He Chao that there are many zombies at the steel plant. We would like to borrow a drone so that we can attract the zombies out."

Drones?

When Li Yu heard this, he immediately understood.

Li Yu initially hoarded some drones, and later collected many more after the apocalypse broke out. Among them are some large drones.

Therefore, there is no shortage of drones in the current base. Basically, everyone who goes out to perform tasks will be equipped with a drone.

Also, their staff on duty will regularly use drones to fly around the base to investigate the situation.

Li Yu waved his hand and said, "Yes, and do you still have enough bullets?"

Speaking of this, Xiao Jun was a little embarrassed, and said:

"There were still some stocks in the past, but after coming from Juzizhou, there are not many left now."

Li Yu heard the words, thought for a while, and said:

"I will give you 1,500 rounds to support your operation. If you consume more by then, I will replenish them for you."

Bullets, in the last days, besides food and weapons, are one of the most important.

Without bullets, a firearm is just a stick of fire, even worse than a cold weapon.

At least cold weapons are sharper.

Xiao Jun said gratefully: "Thank you Mr. Li, leave it to us this time, we promise to get it done."

Li Yu said with a smile: "I believe you. Okay, is there anything else?"

Xiao Jun thought for a while and asked, "When will we set off?"

Li Yu didn't know how prepared He Chao and the others were. He saw them refueling the truck last night.

So he took the walkie-talkie and called He Chao over.

He Chao was well-equipped and looked ready.

Li Yu asked: "When do you plan to leave today?"

When He Chao saw Xiao Jun coming, he said with some embarrassment: "Right away."

Then he said to Xiao Jun: "I'm so sorry. I didn't have time to tell you about today's time yesterday. I'm really sorry."

Xiao Jun waved his hand and said it didn't matter: "We are all ready and can leave at any time."

He Chao became even more embarrassed when he heard this, patted his head and said:

"It's all my fault. I was too busy yesterday with some construction materials matters. Company Commander Xiao, we'll come over and join you right away."

Xiao Jun nodded, said a few words to Li Yu, and then returned to the small courtyard on the rural road.

Li Yu looked at He Chao, who was a little tired, and thought about the building materials needed in the base recently. He Chao was helping to deal with them. Not only did he have to distribute the building materials needed to non-staff members, he also had to lead a team to find them. .

So he said: "You have been working hard recently. Let's do this. For the time being, let Li Hang be responsible for the work arranged by the non-staff staff.

For the time being, you should focus on collecting supplies. After this busy period is over, I will give you a vacation. "

He Chao scratched his head and said: "It's okay, I'm not busy alone. As for the non-staff, I will contact Li Hang."

Li Yu nodded.

Then He Chao left.

Now in the base, the second uncle is mainly responsible for the internal operation and management of the base, as well as connecting with external cooperation teams.

The uncle is responsible for the security of the base, and also patrols around the base at intervals.

Seeing that Li Hang has become much more stable recently, Li Yu plans to train Li Hang, give him some more responsibilities, and practice his management and communication skills in a position without so much risk.

Lao Lu took a few people to find Li Yu. Li Yu also talked to Lao Lu about the drone requirements he had raised with Xiao Jun, and asked him to take them with him when he went out later.

He found Li Yuan again and asked her to approve 1,500 rounds of ammunition and give them to Lao Lu. When they went out later, they would be handed over to Xiao Jun together.

Fortunately, the bullets they used were all of the same caliber, and there was no own-shot incident.

Before leaving, Li Yu took Lao Lu, He Chao and others and sent them outside Xiao Jun's small courtyard.

And, based on this operation, it was pointed out in whose hands the leadership lies.

Both He Chao and Xiao Jun expressed their willingness to obey Lao Lu's orders in this operation.

This made Li Yu feel relieved a lot.

The most important thing for a team is to have clear leadership. Otherwise, when performing tasks outside, once several different opinions arise, it will not only delay the battle, but more importantly, in this crisis-ridden apocalypse, it is easy to lose manpower. .

Otherwise, the entire army may be wiped out.

After all, Lao Lu had served as captain of the armed police brigade in a prefecture-level city before the end of the world. Later, when he was in Jiefang City, he was also responsible for the important work of leading the team.

So, he also has leadership and management experience.

Xiao Jun naturally also knows that although he is the main staff, he has just joined, and it is still a cooperative relationship, so it is normal that he does not occupy the leadership position.

This old Lu seems to be a very capable person, and he should not issue some wrong orders.

After explaining all this, Li Yu returned to the base.

Just as they returned, they received news from Ding Jiu that the cave they were digging had collapsed.

Li Yu was in a hurry and rushed directly to the other side of the mountain without stopping in Wengcheng.

"Is anyone injured?" Li Yu came over and saw people coming out of the cave one after another, and asked Ding Jiu.

After hearing Li Yu's first concern and asking if the personnel were injured, Ding Jiu replied: "No, it's just that Wangcheng retreated a little too slowly and hit his foot."

Seeing Ding Jiu pointing in the direction, Li Yu saw doctor Meng Yu dressing a person's wound.

Walking over, looked at Wang Cheng's wound, and asked, "Is the injury serious?"

While bandaging, Mengyu saw that it was Li Yu, and replied:

"It's not a big problem. The ankle was smashed and swollen. In addition, the epidermis was opened and the skin was injured. It can be cured in a week without leaving any sequelae."

"That's good." Li Yu breathed a sigh of relief.

Then he said to Wang Cheng, "Take care of your injuries for the time being."

Wang Cheng said with a smile: "It's okay, I walked too slowly just now, otherwise I wouldn't be injured."

Li Yu nodded and said a few more words of concern.

Wang Cheng said that he would come to help. He felt that the injury was not a big problem. After Li Yu tried to persuade him to no avail, he asked him to temporarily go to the underground planting base to help.

After Wang Cheng left, Li Yu turned to look at Ding Jiu and Xiao Qian.

His face looked a little ugly and he said, "What was the cause of the landslide?"

Seeing that Li Yu seemed to want accountability, Father Li, who was also managing the excavation work, came over and said:

“I don’t blame them, the main reason is that the construction period is too tight. Therefore, the excavation cycle footage is too large, which greatly disturbs the surrounding rock and reduces the self-supporting capacity of the surrounding rock.

In addition, the angle between the hole line and the main structural fracture surface and the direction of the weak zone is less than 30°, so landslides are prone to occur;

Moreover, the angle between the loosely bonded thin layer of surrounding rock and the axis of the cave was less than 45°, so a landslide occurred during the excavation. "

Li Yu said nothing, took a flashlight, and walked into the cave.

From yesterday to today, in just a few dozen hours, hundreds of square meters of space have been dug out of the cave.

Looking at the pillars on the cave, Li Yu thought for a while and said:

“Don’t be too anxious, make sure it’s safe and stable. If it’s too difficult to dig 10 acres a month, then just do 5 acres.

In short, the area is not considered the first principle for the time being. The first principle is safety and sufficient stability. The second thing is time. You can dig as much as you can within a month. "

Ding Jiu and engineer Xiao Qian nodded repeatedly, indicating that they would pay attention later.

This small landslide is something that happens occasionally during cave excavation and is considered normal.

But Li Yu was very concerned about stability and safety, so he asked about the safety protection and asked them to configure it according to the requirements.

Don't save cement, don't save building materials. We must ensure that even if there is an earthquake or even if a cannonball hits it, it will not collapse.

After knowing Li Yu's standards, Xiao Qian was a little stunned and said: "Then the materials needed will be several times the original amount."

Li Yu said seriously: "Use, be sure to ensure stability."

After finishing speaking, he reminded himself that he must come here to see more in the future.

After explaining all this, Li Yu asked Ding Jiu:

"Uncle Ding, I hope no one will be injured during the excavation. Do you have any good solutions to this landslide?"

Ding Jiu thought for a while and said:

“In fact, the most stable method is to grout the pipe shed in a short amount of time or in advance, and to clear the slag in sections;

After the inspection is completed, the steel mesh, grating or arch support, concrete spraying, and anchor rods should be laid in a timely manner to complete the initial support of the tunnel after the slag removal;

Once these are done, landslides will basically be less likely to occur.

I was still in a hurry, so I was a little anxious, and some homework was not done properly.

In addition, I think that in the following excavation operations,

Try to use construction methods such as shallow drilling, weak blasting, strong support, and frequent measurement to reduce disturbance to the surrounding rock;

Many soft rocks or extremely soft rocks should be excavated manually and with small excavators.

In this way, nothing goes wrong. "

After all, Li Yu is not a professional, but he can hear the general meaning: reduce the blasting intensity and increase the support intensity.

He nodded and said:

"Try to be more prudent and prevent such landslides from happening again. Even if it is a small landslide, try not to have one.

I will arrange for people to come and help you. Where is Xu Zhen? He should be very professional when it comes to digging caves and draining them. "

Ding Jiu said:

"Xu Zhen is still in the cave, didn't you see him just now?

There is not much problem with manpower. Lao Lu called some people to come over to help, as well as the workers who followed me before, and Song Min and the others are all here. "

Li Yu thought of the piece of cloth under the pillar in the corner of the cave, and then realized that it was a person, probably Xu Zhen.

Then he entered the cave again and saw that it was indeed Xu Zhen. After calling him over, he found that his face was covered with dust.

After a few words of encouragement, he said: "Xu Zhen, please cooperate with Ding Jiu and others to pay attention to drainage and water leakage issues."

Xu Zhen said there was no problem, and then took Li Yu to talk about some professional ideas on the cave wall.

Li Yu listened quietly.

After explaining to everyone that all ideas were based on safety and stability as the first principle, Li Yu simply didn't leave and directly joined in to help.

At present, everything that should be arranged inside and outside the base has been arranged.

He Chao and Deng Ben also ordered him to go down. Xincheng strengthened its protection and paid attention to the arrival of strangers.

The third uncle and Lao Qin are both at the base. If something happens, with the uncle and the others there, there won't be any big problems.

In addition, Lao Qin and his brothers, Li Tie, and Lao Luo were familiar with the operation of tanks and armored vehicles.

Although Li Yu is the leader in the base, he understands that professional people should be left to do the work.

Therefore, when digging caves, safety and stability are required.

But at the specific implementation level, he did not interfere. Instead, he obediently followed Ding Jiu's orders.

Soon, Ding Jiu and the others discovered that Li Yu had a strong learning ability.

In just a short while, during Ding Jiu's explanation, Li Yu learned some basic knowledge about civil construction and learned quickly.

In addition, you have strong hands-on ability. After basically telling it once and executing it once, you can know how to operate it and also understand some of the principles behind it.

These are some of the benefits that Li Yu has brought since his rebirth.

Not only did his physical fitness improve greatly, but his comprehension and thinking abilities also greatly improved.

However, for Li Yu, the biggest change since his rebirth is that he has strengthened his perception of danger.

This sixth sense that he had developed during the five years of the apocalypse before his rebirth had strengthened several times after his rebirth.