Chapter 673 Drainage system problem! [Want to update please monthly ticket please subscribe]

February 17th.

There are still two days until rain.

Big camphor tree base.

The morning sun comes out very early.

The sun is strong these days and the temperature rises very quickly during the day.

During the hottest time of the day, it can reach 18 or 19 degrees Celsius.

At night, it will return to only two or three degrees.

On the cement floor in the inner and outer cities, the rice is still placed on it to be exposed to the sun.

Some people took wooden rakes and raked over the rice to rake out some of the rice.

After being exposed to the sun all afternoon and air-drying all night yesterday, there are basically no water stains on the cement floor.

If there are a few more sunny days, these grains can be dried.

In the inner city.

At the core drainage outlet, Li Yu is discussing with Xu Zhen.

"How is the drainage system upgraded now?" Li Yu looked at Xu Zhen and asked.

Xu Zhen pointed to the inner and outer cities and said: "In the past two days, I have installed additional water pumps in places where water is prone to accumulate, so that the water can be discharged faster.

In addition, the height of open spaces around warehouses and residential areas is reduced, which can effectively accommodate stagnant water and protect surrounding buildings. If the previous situation occurs again later, there will be no problem.

Now we only need to make some adjustments to the water outlet, expand the water outlet, and clear the water channel, and then there will be no problem. "

Li Yu looked at the deep drain and said, "What are you going to do?"

Xu Zhen thought for a while and said: "I went to see it yesterday. The iron railing at the drainage outlet outside the base had some sediment, leaves, stones and other things deposited on it, which blocked the outlet over time. It must be opened!"

Li Yu frowned and said: "Open the railing. Although it is impossible for zombies to climb up the cliff now, what if the water level rises under the cliff? During the dry season, I don't think that place is safe if there is no obstruction.

In short, no matter what, there must be an iron railing over there for protection. "

Xu Zhen was a little helpless. The drainage outlet of the Da Zhangshu base was on a cliff, and the top of the cliff was a full 79 meters above the ground.

The water outlet they built is at a height of 72 meters.

The snow has melted in the past few days, and the water level under the cliff has risen to nearly 20 meters, forming a small lake.

Below the cliff is a depression, which is more than 40 meters shorter than the forest next to it. However, at such a high location, if the water level under the cliff can reach this high, then the outside of the front door of the Da Zhangshu base will probably be flooded to 2 meters. Three meters high.

The Da Zhangshu base is not at the same altitude. The side near the cliff is shorter and the side near the gate is higher.

The height difference between the highest location and the lowest altitude can reach 7 meters.

It is precisely for this reason that the drainage outlet in the base was chosen on the cliff side, which can save construction costs according to local conditions.

Hearing Li Yu's determination, Xu Zhen really wanted to say that unless there was a terrible flood that only happened once in a thousand years, it was absolutely impossible that the other side of the cliff would be flooded to such a high height.

But he didn't dare.

Li Yu has told him twice, and he has also told Li Yu all the possibilities. Li Yu clearly expressed that he knew, but still persisted.

Xu Zhen could only frown and think hard.

Li Yu was not in a hurry and watched him quietly from the side as he came up with a solution.

He didn't know how high the water would be flooded after the heavy rain in the next few days, but he knew that he must do his best to take all the protection, and the more he did, the better.

Even if the terrain at Da Zhangshu Base is relatively high and it is not flooded afterwards, what if it happens?

He doesn't dare to gamble!

Li Yu has been staying here, staring at Xu Zhen and trying to figure out a solution.

Under this terrifying pressure, Xu Zhen had a flash of inspiration.

Got it!

"I have an idea, Mr. Li. Based on your needs, I think we can bury a hidden line to control the outlet railing on the cliff side, use waterproof and insulated line materials underground, and use steel pipes on the surface of the line. Material protection, which prevents crushing and compression.

Then, at the location of the drainage outlet, we can use waterproof material to make a switch and connect it to the base through lines, so that we can control the opening and closing of the iron fence in the base.

In addition, we can even install some cameras next to the drainage outlet, so that we can see the drainage outlet at any time. If there is sedimentation and obstruction of sediment and leaves, we will open the railing and close it after it is clear! "

Xu Zhen took a breath and quickly finished the flash of inspiration in her mind, fearing that she would forget it later.

Next to the two of them, Lao Lu heard the idea, thought about it for a moment, and asked: "As far as I know, there are dozens or hundreds of meters from the base wall to the edge of the cliff, and under the wall, The foundation is completely sealed with concrete and poured to a depth of more than ten meters. If you want to lead a line through, then if you don't go through the drainage outlet.

Either walk on the ground, which means breaking through a five- to six-meter-wide wall. Of course, it's the same underground. I feel that construction is not a very simple matter. "

Li Yu thought for a while and said: "There is no need to open another hole. Just run the line directly from the drainage outlet, make sure it is stable, and walk against the top of the drainage outlet hole. Xu Zhen, can this be done?"

Xu Zhen looked at the wellhead with a diameter of more than two meters and the flowing water inside. After thinking for a few seconds, she said: "No problem. Mr. Li, as long as the waterproof material and the door that controls the iron railing can be fixed, there will be no problem." question."

"Okay!" Li Yu said with satisfaction.

Then let Li Hang and Ding Jiu come over.

Ding Jiu has been a contractor before, so he is familiar with many building materials, and naturally knows how to make them and whether they can be made.

After hearing Li Yu's needs, Ding Jiu nodded slightly and said: "I have done it before. I took over a wonderful project before, which was to install some gorgeous lights at the bottom of the swimming pool. His pool has water all year round, and the lights installed below , it has never been broken. It can be done, but I need someone to make the control system for opening and closing the door."

Li Hang studied mechanical and electrical maintenance in college, so he was naturally involved in this area.

He opened his mouth and said: "Okay, brother, I will ask He Bing and Zhou Ran to work on this system together later. It won't be a big problem."

Seeing the three of them solving the problem while chatting, Li Yu felt slightly relaxed.

Then he said to the three of them: "Okay, then you start taking action now, Xiaohang, and on your side, go fix the iron fence and control system now."

Li Hang asked: "Do you want to modify the original iron fence?"

Li Yu remembered the iron fence that he made before. It has been used for two years, and he didn't think so much when he built the base. Now it is a little rusty.

So he said: "Redo, my request is that it is waterproof and not easy to rust, and the sturdiness should be higher. The stability should be stronger, otherwise we pressed the button to open it in the base, but the iron fence didn't move at all, which would be troublesome!"

Li Hang said seriously: "Okay, when will it be used?"

Li Yu glanced at Xu Zhen and said, "The sooner the better, tonight at the latest."

"In such a hurry?" Li Hang said in surprise.

He didn't understand why he had to be in such a hurry to do this.

Naturally, Li Yu would not explain to him that there would be heavy rains in the future, the dam would be submerged, and floods would come over.

So he explained: "This time the long-term blizzard caused waterlogging after the snow melted. Although there was no loss, it showed a very serious problem.

If there is a problem, we must solve it immediately without delay! "

To put it this way, it is in line with Li Yu's resolute style and personality.

After calculating the time, Li Hang said, "It's a bit difficult. After all, it's not an iron railing. We have to fix the wiring and waterproof and heat insulation. The materials are available, but there is not enough manpower. The three of us alone are definitely not enough. We need more people. "

Li Yu thought for a while, thinking about which manpower was more suitable.

At this time, Ding Jiu said: "Mr. Li, Lao Zhou was a mechanic before. When he was building a greenhouse last time, I felt that he was very professional."

When Ding Jiu said this, Li Yu immediately remembered Uncle Qin and the others from the lathe factory.

So he said: "Yes, Lao Zhou, and let Uncle Qin and the others come over to help you."

There are more than 30 people in Lao Qin's group, all of whom have transferred from the military. They used to work in a state-run lathe factory, so there should be no problem doing this.

Li Hang said quickly: "It doesn't take so many people, huh? It's okay to come, and the speed is faster. If they all come to help, it can be done in three hours, at most three hours."

Li Yu said with relief: "OK, I'll take another photo later, tell them about the situation here, and start working quickly."

"good."

After solving the problem of the iron railing control system and the wiring, Li Yu said to Xu Zhen: "Now? There is no problem?"

Xu Zhen saw that Li Yu was so forceful that he asked people to solve the problem, so she nodded naturally and said, "It's okay."

"Okay, then let's go and remove the iron railing now, and then clean up the mud, sand and leaves inside." Li Yu said.

Lao Lu quickly said: "President Li, don't go in, just let Lao Xu and me go."

Li Yu didn't refuse either, and let Xu Zhen enter the inner city. In addition to his previous contributions, let him be responsible for the drainage problem. He must be the first to go.

You can't always be at the forefront of everything.

So he said, "Okay, let's act now."

When Xu Zhen and Lao Lu heard the words, they immediately changed their clothes, took tools and a flashlight, and tied ropes around their bodies, and slowly went down to the drain.

The drainage outlets in the base will all converge into this square well, and there are underground drains leading to various places below.

It was about seven or eight meters deep from the ground, and iron frames were set up on the walls of the well for them to climb down.

The current snow water has basically been excreted, so the water in the well is very shallow now, and they can go down without wearing oxygen cylinders.

The reason why they tied a rope to them was because there was a cliff when they went out from the drain, and if the iron railings were opened and their feet slipped and they fell, they would be dead.

Xu Zhen stepped on the water, and the water level was so shallow that it barely passed his ankles.

After he went down inside, he immediately turned on the overhead light. Under the light, he could see some moss growing on the wall.

tread--

Lao Lu also came down and stood at the bottom.

They looked at several water crossings nearby, which were drained from the base and were about 1 meter higher than where they were stepping.

With this arrangement, the height difference can be used to allow the water in the base to drain outside under the action of gravity.

"We're here!" Lao Lu shouted towards Li Yu and others above.

The well is deep and the sound echoes.

Lao Lu and Xu Zhen were in the well, feeling their ears trembling.

"Okay, pay attention to safety." Li Yu said to them.

Then he watched Lao Lu and the two enter the drainage outlet leading to the outside of the base.

This drainage outlet is not very high, only two meters in diameter.

But it was enough for them to stand up straight and walk.

From here, they went straight outside the base.

From here, it was about a hundred meters away from the cliff. The two of them illuminated the lamp and walked forward slowly.

Sudden.

Lao Lu, who was walking in front, kicked something. He stopped quickly, took out a long knife from behind, and took a step back.

Then he picked the thing with a long knife.

Crash--

A piece of worn jeans, weighed down by sediment.

"Why are there jeans? How could someone throw jeans into the sewer..." Lao Lu said helplessly.

When Xu Zhen saw this scene, she said speechlessly: "If you throw everything into the sewer, it will definitely be blocked!"

"Let's talk to Mr. Li." Lao Lu said.

Then he took out the walkie-talkie and talked about this matter with Li Yu.

When Li Yu heard the news, he was slightly stunned.

I felt a little angry in my heart, who the hell threw this!

I have made up my mind that after the drainage system is completed, everyone in the inner and outer cities must emphasize this matter.

"Okay, I understand, what's going on inside you?" Li Yu asked with the walkie-talkie.

As Lao Lu walked, he saw a raised object in front of him. He opened it and saw that it was a can. As he walked further, he saw various rags, plastic bags, and a lot of garbage.

"This sewer is almost turning into a garbage dump!" Lao Lu said.

"Uh" Li Yu was silent. This matter must definitely be raised to a higher level.

Don't throw garbage into the sewer! Once someone does this again, they must be severely punished!

I was very happy in my heart. Fortunately, they were allowed to go down to check this time. Otherwise, when the heavy rains and floods came later, drainage problems would arise, which would cause huge trouble to the base.

Xu Zhen's face didn't look good either. Last time the drainage system in the base was upgraded, she didn't expect there to be so many hidden dangers.

So he took out the walkie-talkie and said to Li Yu: "Mr. Li, I think there is one more thing to do, which is to set up a garbage cleaning system on the other side of the well and block it with iron bars. If there is garbage."

Xu Zhen talked a lot about the drainage system that relies on urban management.

Including open ditches and culverts, rainwater and sewage diversion, etc.

Li Yu pondered for a while and said to him: "What you said can be done. The most urgent task now is to solve the problem at the drainage outlet first."

Only then did Xu Zhen give up.

Lao Lu continued to walk forward.

Soon, he saw a bright light in front of him.

Ten meters ahead is the water outlet of the cliff.

Chirp——

Lao Lu didn't know what he stepped on and slipped.

Ouch!

Lao Lu slipped and stood up.

Looking at the position just now, I saw a round shell, bigger than the basin.

Lao Lu then picked it with the long knife in his hand, but did not move it.

Um?

What is it?

Lao Lu shined a flashlight on the object, and then.

A turtle's head was exposed.

"Hey! So it's you! Why are you here?" Lao Lu knew this turtle.

When we were fishing in the lake, we found a big turtle, and everyone in the base knew about it.

Li Yu even placed the turtle in the cave.

Later, when there was a blizzard, I didn't see it for a while.

The people in the base searched for it for a long time but couldn't find it. Now they found it in the sewer.

Turtles are not mammals and cannot be infected with zombie viruses.

So Lao Lu kicked it with his feet and said with a smile: "Old guy, I'll carry you back later. You're lucky enough to be able to survive in such a cold weather. You're awesome!"

Xu Zhen looked at the turtle and was amazed.

The two continued walking.

Soon, they reached the edge of the cliff.

There was a lot of garbage and sand deposited on the cliff mouth and on the iron railings.

These are blocked by railings.

"I'll take a photo." Xu Zhen said, motioning for Lao Lu to step back.

Lao Lu took a few steps back slightly and made room for Xu Zhen.

Xu Zhen took out her mobile phone, took a few photos of the iron railing, thought about it, and recorded a few videos.

Since the railing is connected to the outside, the light is very bright and the light is very clear.

After Xu Zhen finished taking the photo, she took out the walkie-talkie and said to Li Yu: "Mr. Li, we are already here. Should the iron railing be removed directly? If it is still needed, we can pull the rope from above and I will tie him up." , you guys pull up. It’s definitely not possible to pass through the sewer.”

After Li Yu heard it, he immediately replied: "Okay, keep it, you two wait for us."

Then he said to Ding Jiu, Li Tie and the people who were following Lao Lu, "Let's go to the cliff through the back door now, and drive a truck there to pull things."

"Okay, Mr. Li," one of them said.

"Oh, by the way, Tiezi, go to the warehouse and get three cameras, and put some surveillance cameras at the water outlet over there. We didn't put them up before." Li Yu remembered and said to Li Tie.

Li Tie nodded and said, "Okay, big brother, you go there first, and we'll come over later."

After saying that, he took two people and went to find Li Yuan.

To open a warehouse, you must find Li Yuan.

Li Yu also informed Li Yuan to get them some cameras.

After explaining all this, Li Yu took Lao Xie and others out of the back in a pickup truck.

Li Yu must wear a bulletproof vest whenever he wants to go out, even if he is just outside the wall.

Li Yu was carrying a gun and sitting in the passenger seat of a pickup truck.

Go out the back door.

Yang Tianlong in the duty room at the back door saw Li Yu and asked.

After the pickup truck got out of the back door, it turned a corner and drove another 400 meters until it came to the wall in the direction of the cliff.

In this direction, a duty room is also set up.

The scenery in this duty room has always been better.

Seeing Li Yu and the others going out, Song Qi and Shang Xueer in the duty room in the direction of the cliff saw them and greeted them one after another.