The Military-industrial Scientific Research System of the Academic Master Chapter 858

Chapter 858 The value of space remote sensing

“Well...that's it.”

Xiao Wenchang put down his water glass and walked back to the curtain:

“Our exploration unit has to constantly change working locations, so we are unable to conduct particularly complex tests.”

“Especially because the properties of geological samples related to desert conditions are relatively stable, we are more inclined to send more tests to the capital for testing.”

As he spoke, he turned another page of the PPT.

The above are several other physical and chemical data of samples from two areas.

Of course, as Xiao Wenchang said, they are all very basic or items that are not convenient for remote testing.

Such as particle composition, hydraulic properties, conductivity, pH, etc.

Either there is no change, or the change is irregular.

In short, they do not show particularly obvious research value like the deep water content just now.

At this time, Zhai Mingguo, who had just been sitting on Chang Haonan's left hand side, then spoke:

“Originally, we planned to have all three comrades from the geological exploration team take the stage, and then it would be our turn.”

“But I see that Mr. Li is so eager to hear it, why don't we just change the order?”

The slightly joking tone made the atmosphere in the conference room suddenly become more relaxed.

Although Zhai Mingguo used an interrogative sentence and was speaking to Li Nianheng, he was obviously not consulting the latter's opinion.

“That's good, so that the conditions of each terrain can be explained together.”

Chang Haonan nodded:

“Otherwise, if we wait a little longer, by the time you tell us the detailed test results, you may have forgotten many of the things mentioned earlier.”

Seeing that his proposal was agreed, Zhai Mingguo immediately looked at another young man opposite who was still wearing laboratory clothes:

“Xiao Lu, go up and report what you have discovered during this period to your comrades!”

Sample testing is not started after the exploration team returns, but is collected and tested as needed.

So even though the first round of exploration only ended three days ago, most of the test results have actually come out.

The young man named Xiao Lu stood up immediately:

"yes!"

　　Then he strode towards the podium with rapid strides.

Seeing this scene, Chang Haonan also sat up slightly -

Although the content of the conversation between the other two seemed ordinary, considering the tone and demeanor of the words, it was obvious that they had a big bottle in their hands and were ready to take it out and shock their peers for a whole year.

“Dear comrades, my name is Lu Jinhui. I am responsible for analyzing all samples from two areas in the Alxa region. Specific projects include..."

Lu Jinhui's voice was slightly trembling.

He does not look much older than Chang Haonan. He must have just entered the institute and does not have much experience in dealing with big scenes.

Now that I suddenly face so many colleagues and seniors, I am inevitably a little nervous.

After a brief opening remarks, Lu Jinhui went directly to the topic.

"After the sample is naturally air-dried, it is passed through a 2mm sieve to determine the composition of sand particles; it is passed through a 0.25mm sieve to determine the soil organic carbon content and total nitrogen content; a cylindrical shape with a diameter of 75cm, a height of 150cm, and a rubber film is used. Sand column, used to determine the effective stress of dry sand…”

As the content deepened little by little, his speaking speed became much smoother than at the beginning.

“From the test results, we found that the Tengger Desert, especially the relatively concentrated 19 deep sampling samples on the southeast side of the Tengger Desert, which we call the Tengger Group A, has relatively special physical properties.”

"Of course, the two research objects this time, Badain Jaran and Tengger, actually have some characteristics that have not been noticed before, so the specialness I just mentioned is compared to the typical deserts that have been studied more in the past. In terms of shallow surface sand.”

Speaking of this, Lu Jinhui turned around and clicked the mouse.

　　Two photos that were clearly magnified by a microscope were projected on the screen. They looked like they should be two grains of gravel, one large and one small.

The larger one appears angular in shape, while the smaller one is relatively smooth, closer to a perfect sphere.

There is a series of tables below each of the two pictures, with a series of physical and chemical property data on them.

Lu Jinhui paused for a moment to allow everyone time to read the contents of the PPT clearly, and then continued:

“Generally speaking, because desert sand is subject to weathering all year round, the particles are finer, the outer contour is smoother, and it usually contains a higher proportion of harmful salt components, so it cannot completely replace river sand as a building material.”

"However, after analysis, it was found that the sand particle samples in Group A present a crystal structure of silica, which has potential volcanic ash activity, so it can be used as a substitute for cementitious materials to a certain extent, although its gradation is still relatively average. But the chemical composition and mineral composition are relatively close to river sand..."

"In addition, we also conducted a sand foundation bearing capacity experiment and found that the shear stress of the sample in area A increased instantaneously after the loading strain rate was increased instantaneously, but it will gradually fall back to the original loading curve as the loading process..." Simply speaking Lu Jinhui's discovery is that the desert sand in this area has the potential to replace river sand as the fine sand and medium sand in concrete components, but further experiments on blending and modification are needed.

From this point of view, the excitement shown by Zhai Mingguo just now is understandable.

Although river sand is not a scarce resource at the moment, with the acceleration of urbanization across the country and the rapid rise of the real estate industry in recent years, pure natural building materials will one day be no longer available. Meet the huge demands of the construction industry.

However, compared with river sand, desert sand is inexhaustible. Even if it is just an area in a desert, it still has huge development potential.

Even though desert resources belong to the country and cannot be directly monetized, for researchers like them, that is not the point.

In recent years, it is relatively easier for projects related to large-scale infrastructure to participate in the review of national science and technology awards.

Furthermore, national science and technology awards are a necessary condition for promotion to academician status...

I work at the Chinese Academy of Sciences, and the Institute of Geology and Geophysics has just been merged, and there is no work to do.

It is normal to have such thoughts.

However, understanding is understanding.

Chang Haonan was a little disappointed—

This is indeed likely to lead to a series of significant results, but it is not an area of interest to him.

Of course, just a little bit.

After all, Lu Jinhui's test results have proven the effectiveness of data dimensionality reduction technology.

And as long as you have this first application, you don't have to worry about the second or third time...

You must know that high-order data dimensionality reduction is the same as numerical calculation methods and belongs to the methodology level. It is also enough to support another tool system similar in size to TORCH Multiphysics.

Even, a new industry.

As long as it can be promoted, there is no need to worry about discovering what Chang Haonan is really interested in.

However, it can be seen that most people are still very interested in this result.

While Lu Jinhui finished introducing this paragraph, someone quickly raised a question:

"Xiao Lu, I saw that you tried several sets of concrete samples prepared by mixing desert sand and river sand. The strength is average, but the toughness seems to be good?"

"This... our research is mainly about geology, not civil engineering, so I just released these concrete samples to give you a reference."

Lv Jinhui replied:

“At present, we can only say that the specific characteristics are related to the blending materials and ingredient ratio. We cannot draw a conclusion based on several sets of test results.”

“If there is such a high-tenacity building material, it will be useful in the permafrost we are responsible for exploring, and it can be used as a foundation or roadbed.”

“Well, there are also soft soil foundations in coastal areas. You can also consider using this material for modification..."

Everyone was talking to each other, and the lively discussion lasted for about twenty minutes.

Although Chang Haonan had little personal interest, he did not say anything to stop it.

First of all, listening to other people's research content and inspiration is also part of research.

For example, the idea of using high-toughness materials to modify the foundation seems to be very suitable for the Huaxia Petroleum Pipeline Bureau to reduce the engineering difficulty in the pipeline laying process.

After the heated discussion came to an end, Li Nianheng finally spoke again:

“Researcher Lu, in addition to the characteristics of the samples from Group A of the Tengger Desert, I remember you just mentioned that the deep samples of the Badain Jaran Desert also have some parts that are different from what we have known in the past?”

As an expert in the field of satellite remote sensing, he still wants to know the special characteristics of geological areas that exhibit different signal characteristics.

Because, if some rules can be summarized from it, it will be a shot in the arm for the entire space-based remote sensing industry.

Around 2000, the overall scale of the aerospace industry was small, and its importance in the national economy had not yet been fully reflected.

Simply put, it is still in the investment stage of long-term investment and has not seen any obvious results.

Therefore, superiors still have some concerns about spending a lot of money on aerospace.

And if he can produce some powerful results, he and his superiors will have a lot of confidence in the future when they ask for the launch of more remote sensing satellites.

(End of this chapter)

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