I! Pretending to Be Reborn, Director of Doomsday Hoax

"The Dragon Kingdom as a whole will be completed before six o'clock tonight. At that time, the forest relocation plan will be officially launched!"

"In the evening, when there is a lack of photosynthesis, the transpiration of the trees will also be weakened. If they are transferred at that time, the survival rate of the trees will also be greatly improved!"

In fact, this question does not need to be considered too much.

You only need to increase the soil ball, strengthen the pruning of branches and leaves, and pay attention to the shade of the trees during the transplanting process, and generally they can survive.

The reason is simple, these trees are not artificially planted sick seedlings, but tenacious wild trees grown from the primeval jungle!

Xu Qiu's eyes were deep, and he continued to ask: "What about the development of low-temperature concrete?"

For low-temperature concrete, the deadline is to give the final plan before the arrival of the Little Ice Age.

For this thing, Xu Qiu's expectations are not too high. After the sun is extinguished, it is minus two hundred degrees. No matter how the concrete is strengthened, it is limited by the material and the freezing mode. Even if it is mixed with more admixtures and polypropylene fibers, it will not It is possible to increase the cold resistance of concrete to minus two hundred degrees.

It is enough that construction throughout the country does not stop during the ten days of the Little Ice Age.

Lu Guangyuan reported: "Director Xu, Professor Yan Yan has used the load superposition effect according to the ratio you gave. At present, the cold resistance and durability of concrete have been greatly improved. However, there is still a gap between thirty and forty degrees below zero. a distance. °

"The time given by Professor Yan is that the low-temperature concrete must be produced before August NO.20!"

After speaking, Lu Guangyuan delivered a document and said: "Director Xu, this is the problem that Yan Yan has summed up so far. He will conquer these directions in the next time. Do you see any problems?" During the construction of Shenlong, everyone was impressed by Xu Qiu's excellent understanding of concrete technology.

Even the proud Yan Yan subconsciously hoped to get Xu Qiu's approval.

"I'll take a look."

Xu Qiu opened the file.

Although concrete cannot be used after the sun goes out, it can still play an important role in highway engineering, bridge engineering, airport runway engineering, industrial and civil construction and tunnel engineering in the next ten months.

Especially in the laying of extremely cold lines, partially softened foundations, or lines passing through rivers, it is necessary to use concrete to build bridges, etc.

"Technical Research on Concrete Technology in Low Temperature Environment"

Xu Qiu browsed briefly.

The problems Yan Yan summed up are relatively comprehensive.

The quality of concrete is affected by two aspects, the first is internal construction factors, and the second is external environmental factors.

External environmental factors include temperature, air humidity, harmful gas content and wind speed, etc., which are unpredictable.

At most, a mixing shed is built on the construction site, which is specially used to mix concrete.

The purpose of this low-temperature concrete is to completely adapt to low temperature with its own advantages, regardless of any external conditions.

This needs to improve the quality of pouring materials, the ratio of pouring materials, and the quality of concrete mixing and vibration.

At low temperatures, there are three main common problems with concrete.

Cracks in the concrete surface,

"[-]" loses moisture quickly,

and a slow increase in strength.

Under the guidance of Xu Qiu, Yan Yan finally decided to control the aggregate, fine concrete mix ratio, mixing quality, mechanical and heat treatment, and discharge temperature.

"There is nothing wrong with these research directions, let's continue to study." Xu Qiu said lightly, expressing his approval.

Lu Guangyuan nodded respectfully, "Yes, Guangyuan will notify Professor Yan to speed up the progress!"

"Go."

Lu Guangyuan resigned.

Li Bingqing walked behind Xu Qiu.

The female officer with short hair over the ear raised the hand that only held the gun, put it on Xu Qiu's shoulder, and squeezed it lightly and hard.

"Director, pay attention to rest."

Xu Qiu unfolded the world map, looked at the circled countries on it, and said slowly: "Our Dragon Kingdom has been around for 5000 years, and Han Zuo has been on and off twice, but the sacred flame of civilization is still passed down."

"The Five Emperors, the Xia, Shang and Zhou Dynasties, the Five Hegemons of the Spring and Autumn Period, the Seven Heroes of the Warring States Period, and the Qing Dynasty's unification of the world are all just on the territory of the Central Plains. Each holds chess pieces, and each has its own victory or defeat."

"And today, this game of chess fell into our hands. This game of chess that has been played for 5000 years cannot be cut off from our hands."

"The civilization of the Dragon Kingdom cannot be broken!"

As Xu Qiu said, he slammed the table hard. In his eyes, there was love and protection for this country and its people.

Dragon Kingdom time, five twenty in the afternoon.

Liaodong Province, Sanjianghe City, Shuguang City double-layer underground city construction area.

Supporting his old waist, Huang Yuan, accompanied by several engineering supervisors, walked along the wide entrance, entered the elevator, and descended to the second-floor dungeon with a depth of 60 meters underground.

Due to the particularity of Dawn City, the construction area of ​​Dawn City near the ground is only more than 20 meters above the ground, while the second-floor underground city below is opened up to 60 meters underground.It is about ten meters deeper than other dungeons.

And the double-layer dungeon in Dawn City is also one of the most special dungeons in the whole country.

Most of the [-]-square-meter underground city above it will become a forest ecological area.

And in the second-floor underground city below, an ecological area of ​​ten hectares has also been opened up, which is specially used for transplanting trees from a large forest area in the south.

"Huang Lao, according to Director Xu's request, we have opened up a [-]-square-meter forest ecological area in the second-floor dungeon, which will occupy one ten-thousandth of the entire second-floor dungeon area." Huang Yuan With a staggering gait, he slowly walked towards the construction site.

When the blueprint of the dungeon was gradually unfolded, and the [-]-page master plan of the super dungeon was detailed into the design of each part, Huang Yuan felt the greatness of Xu Qiu even more.

In Xu Qiu's design.

In the forest ecological area, most of the underground city will be built, 50 meters underground.

And this, in fact, is the top of most dungeons, and can even be understood as the sky of the dungeon.

Because the real ground of the dungeon is actually about 100 meters underground.

At first, everyone wondered what Xu Qiu intended to do by setting the forest ecological zone on top of the dungeon.

But soon, everyone figured it out.

Xu Qiu probably intends to set a gradient between the 50 meters deep forest ecological area and the 100 meters deep underground city base, with a trapezoidal steep slope between the two.

In other words, this is equivalent to "climbing a mountain" in a dungeon! !

Through this trapezoidal steep slope, residents of the underground city at a depth of 100 meters can go up to the forest ecological zone at a depth of 50 meters.

Even, from this height, people can directly feel the thick frozen soil above and overlook the entire underground city.

"When the end is approaching, there is still such a romance. Director Xu is really amazing!" Everyone sighed.

Huang Yuan also burst into tears.

He originally thought that the dungeon would wipe out all the mountains and rivers, and people could only live in a gray world with yellow soil above, yellow soil below, and a dusty city in the middle. A bit of green, and the "climbing" movement with a slope, gave everyone a little bit of comfort.

At least, apart from humans, these forests also come from the former surface.

Rumble.

At the construction site, excavators and bulldozers are running at full capacity, and a large number of workers are not idle, pushing trolleys, carrying fertilizers, water sources, etc., to moisten the opened land.

Chi Chi Chi.

Excavators dug up patches of land, these are the areas that will receive transplanted southern trees.

"The quality of the soil here should be decent, right?" Huang Yuan asked.

He walked to a corner where the construction had been completed, squatted down, and carefully identified it.

The quality of the soil depends on the source of the soil, the color of the soil, the texture, and the topography after watering.

The soil source is the source of the soil, such as the soil in the mountains and the humus soil in the gully, which is generally black or brown soil, which is relatively loose, fertile, and has good permeability, which is a very good acidic humus soil.Such as pine needle humus, peat humus, etc.

And these soils have many layers, the black is the humus layer of organic matter, there are loess layers, clay layers, etc...

Huang Yuan is not only the chief engineer of the 679 Project, but also personally designed the layout of the main urban area of ​​Longcheng, and has also done in-depth research on geology.

"On the way to transplant trees in the south, we need to do one thing." Huang Yuan said, pinching the turned over soil.

"From our forest in the north, dig up about ten centimeters of soil, all covering this area."

Forest-covered areas have litter and fallen leaves, and the soil has strong fertility, and this kind of soil is loose and porous, with frequent alternation of dryness and wetness, good permeability, fast material transformation, and a lot of available nutrients, which is very conducive to the growth of tree roots .

The director of the construction of the forest ecological area was a middle-aged fat man. Hearing the richness of the yellow plain, he stood up straight suddenly, and the flesh on his face moved, looking very happy.

"Of order, Mr. Huang!"

Huang Yuan nodded.

In fact, the soil 50 meters underground may have been part of the surface millions or tens of millions of years ago.

Only later, under the continuous cover of plate movement, collision, and volcanic ash, it sank here.

The soil quality here is not bad, the color is relatively light and dark, it should be acidic soil.

One advantage of acidic soil is that the texture is relatively loose, and the air permeability and water permeability are very strong.

In addition, there are two ways to distinguish.

Huang Yuan grabbed a handful of soil and twisted it gently.

"Acidic soil is generally soft when held in the hand. After loosening, the soil is easy to disperse and is not easy to agglomerate."

"The alkaline soil feels very hard in the hand, and it is easy to agglomerate and not disperse after letting go."

Crash.

The soil is loose, falling from the palm of Huang Yuan, obviously acidic soil.

"water."

Huang Yuan shouted without looking back.

The middle-aged fat supervisor quickly took out a new bottle of mineral water from his backpack, unscrewed it, and handed it to Huang Yuan.

Huang Yuan didn't answer it. He glanced at it, shook his head and said, "Go, go to the construction site and get some tap water."

Huang Yuan, who was poor all his life, has long been used to frugality, and he can't irrigate the land with mineral water.

The supervisor didn't dare to neglect, and hurried to the construction site. A few minutes later, he came back with a small bucket of water.

Only then did Huang Yuan take it over, and slowly poured water into the soil.

Soon, the water slowly seeped down, and soon, the soil was completely wet.

"If it's alkaline soil, after watering, the infiltration will be slower, and white foam will appear on the water surface, and sometimes there will be a layer of white alkaline substance on the surface."