I! Pretending to Be Reborn, Director of Doomsday Hoax

Then, his gaze turned to the Qingzang Railway.

In the Extreme Cold Era, a difficulty of the Qinghai-Tibet Railway has been eliminated-permafrost.

Since the surface is extremely cold at minus [-] degrees, there will be no phenomenon of frozen soil or thawing at all. Therefore, at least this area does not need to consider factors such as frost heave and thawing.

However, this by no means means that the Qinghai-Tibet Railway is easy to build.

Aside from its astonishing altitude and only 50.00% of the oxygen content at sea level,

Along the Qinghai-Tibet Railway, there are a variety of extreme geographical environments and climate characteristics, such as mountains and heavy hills, plateaus and high cold, wind and sand deserts, thunder, rain, snow and frost.

What's more terrible is that along the Qinghai-Tibet Railway, there is a huge difference in altitude, and the highest drop on the whole line is close to 4000 meters.

This means that in the Qinghai-Tibet Railway section, in order to ensure the normal operation of the nuclear power train and ensure the straightness of the extremely cold line, it is necessary to continuously break through the mountains and build bridges.

Trains, high-speed rails, including nuclear-powered trains, are not roller coasters, you can climb up and down at will, and the entire railway line can only increase the altitude as smoothly as possible.

However, on the Ya'an-Linzhi section of the Qinghai-Tibet Railway, there is a section of road that needs to be ascended in a very short distance!

Either go around, or let this huge nuclear-powered dragon bite the bullet and climb up!

Today's Ya'an-Linzhi Railway has a main line of 26 kilometers, and there are [-] stations on the whole line.

There are 880 kilometers of temporary construction roads for supporting construction, and more than 2000 kilometers of power lines have been paved to ensure the smooth completion of the Ya'an-Linzhi Railway.

A few years ago, just letting ordinary trains conquer short distances and high altitudes, the cost of nearly [-] billion yuan was exhausted, and it was considered successful and gnawed down this hard bone.

Now, it is simply impossible for a nuclear-powered train with a length of 120 + 2000 meters, a height of [-] meters, and a carriage length of [-] meters to perform such a climb... Yaan to Linzhi Railway, from Luding To Zhedo Mountain, the distance is [-] kilometers, and it has to climb more than [-] meters.

In just 2000 kilometers, there is an altitude difference of more than 50 meters, which means that every time the train travels one kilometer, it has to increase by about [-] meters.

With such a straight slope, the railway can't climb at all!

And if Luding and Mount Zhedo were to be bypassed, the distance would increase by nearly [-] kilometers!

The straight-line distance is 2000 kilometers, and in the middle are Ludian and Zhedo Mountains with an altitude difference of [-] meters.

Or... take a detour, take a [-]-kilometer route, bypassing these two mountains!

how to choose?

Xu Qiu's eyes were deep, his head was calm, and he was thinking about countermeasures.

Dragon Kingdom time, exactly [-]:[-] pm.

One after another, experts arrived in Tiandu, and the personnel recruited by Xu Qiu from all over the place came to the meeting room of the Emergency Bureau, waiting to be inspected by Xu Qiu.At five o'clock in the afternoon, the meeting was officially held.

Huang Yuan, Qu Huamei, Mo Hongxi and others looked excitedly at Xu Qiu on the stage.

This young figure gave them infinite confidence and courage to face the extremely cold era! !

Xu Qiu didn't like Mandarin, so he didn't talk nonsense. After thinking about it, he asked, "How is the selection of natural rubber substitutes?" Survive in a greenhouse.But such a small amount of stock is almost equivalent to extinction.

Therefore, countries all over the world, including Longguo, are looking for alternatives to natural rubber.

Xu Qiu chose to start with this topic, which was easier and less important. The idea was simple: let everyone adapt to the rhythm of this meeting.

The person in charge of Longguo's Natural Rubber Department stood up. The Natural Rubber Department is a small department under the Materials Department.

The old man with his hair combed back but with a few age spots on his face said, "Director Xu, I am the person in charge of the Natural Rubber Department, and at the same time, I am also the leader of the Natural Rubber Alternative Materials Research and Development Group."

"When I was conducting research and searching for materials in various places, I saw that many people did not understand why they were obsessed with natural rubber as a material. Can't we give it up?"

"Actually, it's not possible."

"Natural rubber is a unique material that is soft, flexible and highly water-resistant. Products made of natural rubber can be found everywhere in our daily lives, such as tires for vehicles, soles of sports shoes, engines and refrigerators Sealants, insulating wires and cables, etc."

"It's also made into cloud shelters, clothing, sports balls and common elastic."

"Even in the extremely cold era, in the list written by Director Xu, natural rubber is also a member of the list of key raw materials!!"

"The global supply of natural rubber is around 20 million tonnes per year, almost entirely produced by small farmers working small plots of land in tropical forests."

"Millions of workers carefully peeled off the bark in the plantations of Titanium, Yinni, and Xifei, extracted the milky white sap, and dried it in the sun to form flakes. .These farmers provide 80.00% of the world’s natural rubber.”

"However, the Little Ice Age will destroy more than 90.00% of the rubber trees!"

"While synthetic rubber can be synthesized using petrochemicals, natural rubber has unique properties that these synthetic materials cannot match."

"For example, natural latex gloves are more tear-resistant than Ding Yueqing gloves."

"Aircraft tires use natural rubber with high elasticity and heat resistance, which can provide greater friction when landing."

"Therefore, we established the 'Natural Rubber Alternative Selection Excellence Project' group, which is dedicated to finding plants, materials, and even organisms that can replace rubber on a global scale."

"Finally, we set our sights on something..."

"Rubber Grass!!"

Xu Qiu nodded, he was satisfied with the efficiency of the natural rubber department.

But... what kind of rubber grass is this, he has never heard of it.

The people present also had the same doubts. Forest ecologist and famous biologist Zha Hongshuo was also full of question marks at the moment.

Even he had never heard of rubber grass.

The little old man with his hair combed back had a proud face, as if he was asking for credit from Xu Qiu, and said:

"You may feel very strange to rubber grass, in fact, we are quite strange too!"

"This is a plant that doesn't exist in China, and it doesn't even have an official translated name."

"Our team members discovered this plant in the nearby Xiong Country. After testing, they found that it can extract gum, so they gave it a localized name, rubber grass!"

I see……

Xu Qiu and the others suddenly realized.

"Continue talking." Xu Qiu's calm voice sounded.

The person in charge said with a smile: "Director Xu, this plant belongs to the genus Dandelion. Although the rubber yield of this plant is only one-tenth of that of rubber trees, it can be harvested within three months!"

"This is great news!"

"Everyone should know that the growth cycle of rubber trees is seven years. After the Little Ice Age, all rubber trees were destroyed. Even if you want to replant rubber trees, you can't afford to wait seven years."

"But, rubber grass, the gum can be extracted within three months!"

"The extraction method is very simple. By crushing the sticks of the rubber grass, you can obtain the gum."

"Although the yield is only one-tenth of that of rubber trees, rubber grass can be planted in large quantities and can produce many seeds. The cost of replanting and expanding production is also very low!"

"And... we found that rubber grass has an unparalleled advantage. In this respect, it even surpasses natural rubber!"

Xu Qiu glanced at it in surprise, and there was an unexpected joy?

The person in charge said excitedly: "Although the chemical composition is similar to natural rubber, the gum extracted from rubber grass does not contain proteins that can cause latex allergies!"

Xu Qiu nodded.

"Rubber grass does have applicability. If it is really put into use, it can be cultivated in hydroponics and vertical farms to expand production."

The advantage of this kind of crop over rubber trees lies in its size.

The height of a rubber tree is between 20 meters and 40 meters. If a vertical farm is built, a layer of rubber grass will be planted every two or three meters.

In a unit area, rubber grass produces more glue than rubber trees!

The little old man laughed. Instead of sitting down, he smiled mysteriously and said to Xu Qiu: "Director Xu, our team has discovered another species that has the potential to replace natural rubber!" " Hmm? Please tell me!"

"Grey guayule!"

The little old man in the natural rubber department said: "It takes two years to extract guayule for the first time from the time it is planted, but after that, it can be converted to annual extraction through construction!"

"Although it's too late to plant in the Little Ice Age, if it's transferred to the dungeon, the planting of guayule can be taken into consideration!"

"The yield of gray guayule is relatively high. About [-] hectares of guayule can produce [-] tons of rubber every month!"

This output surprised everyone.

Take the production of a 10.00R20 tire as an example,

This tire needs about ten kilograms of steel wire, twenty kilograms of natural rubber, nineteen kilograms of carbon black, and some auxiliary materials.

Generally speaking, natural rubber is calculated as dry rubber, but what comes out of the rubber tree bark is not dry rubber.

There is a saying that "every rubber tree is a small water pump",

This is because more than 70.00% of the latex flowing out of the rubber tree is water, but it usually takes seven years for a rubber tree to be tapped.

Even if the age of all the rubber trees meets the rubber tapping year, taking a rubber tree with a peak production period cut once every three days as an example, it can cut the limit of eight months every year, and each tap can produce about one to two catties of latex.

The content of dry glue is between 20.00% and 30.00%. If the maximum value is taken, it means that every time a rubber tree is cut, about [-]kg of dry glue can be obtained...

After one year, a rubber tree can produce about 24 kilograms of dry rubber, also known as natural raw rubber, which is obtained after dehydration, drying and other processing.In other words, a rubber tree can only produce one 10.00R20 tire per year

So, what about gray guayule instead?

Ten thousand hectares, four hundred tons of bananas.

Only 10.00+kg is needed to produce 20R[-] tires, and [-] hectares of guayule can produce [-]kg of rubber.

The most important thing is that guayule, like rubber grass, is a small species that can be cultivated in vertical farms!

At a height of [-]+ meters, about ten layers of guayule can be planted. In this way, the yield of [-] hectares of guayule is more amazing than that of rubber trees! ! .

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Chapter 94 stress relief and rail temperature locking, a shocking big plan!

The person in charge of the Natural Rubber Department said excitedly: "Director Xu, guayule, we have also carried out research on the introduction and adaptation of the species, and found that this plant is extremely adaptable!" A document was handed to Xu Qiu excitedly.

"Experimental Report on Introduction and Suitability of Gray Guayule"

Xu Qiu flipped through for a few minutes.

This is an experiment led by the Longguo Natural Rubber Department and jointly conducted by four institutions including the South Subtropical Crops Research Institute of the Longguo Academy of Tropical Agricultural Sciences.