Military Technology

Under the gaze of everyone, the drill bit was lifted up from the drilling well by the drawworks, and then the direction was changed. A thick intelligent robotic arm clamped the drill bit and pulled the 1.5-meter drill pipe. The hydraulic device above the drill pipe slowly downwards, pushing out the core lunar soil samples drilled in the hollow drill pipe, forming columnar adobes, which were then neatly placed aside by the robotic arm.

The drill pipe was turned around again and put into the drilling well to continue drilling. The robotic arm here used a small drill bit to start sampling these columnar lunar soil samples, and then placed the 'Wangshu-2' intelligent Laboratory analysis is conducted in the lunar soil composition analysis laboratory on the lunar surface exploration vehicle.

Relevant samples will also be taken, backed up, encapsulated, and then labeled and stored, waiting to be taken out after humans land on the moon in the future and brought back to Earth for more detailed analysis and research.

As we expected, the sedimentary layer of surface lunar soil is about 80 to 150 centimeters, with a relatively solid extrusion layer underneath. A geological expert stroked his eyes, looked at the data on the screen and said.

"Judging from the current drilling analysis, we can build housing facilities here through pile driving and irrigation technology, so that the geological structure can fully support it."

After hearing what this expert said, another expert shook his head and said: "Not to mention that the lunar environment is complicated, but how do you obtain the cement and steel bars in the concrete? It cannot be transported from the earth. This is too costly. ”

Then there is only one way left, which is to compact the foundation and then pour a raft foundation, which can also provide very good stability. Another expert spoke up.

Still the same method, materials! Another expert shook his head: "Let's not talk about how to obtain cement and steel bars. Let's talk about the cruel environment on the moon. The light is more than 100 degrees, while the shadow is more than 100 degrees. The concrete you poured may not be When it solidifies, it will be frozen into popsicles.”

After hearing what this expert said, Shi Zhaoping said with a smile: "In fact, we might not be able to use this environment to find a solution.

There is no need to go through so much trouble at all. You can use local materials, mix water and lunar soil to form mud, and then pour it into the drilling. With the ultra-low temperature, the mud will freeze quickly and mix with the underground freezing in the entire lunar soil. Earth blends into one.

I believe everyone is familiar with the solidity of frozen soil. Isn’t the foundation created in this way more balanced than concrete? "

After hearing Shi Zhaoping's words, all the experts present nodded in appreciation. Indeed, this is a fanciful idea, but it is also an excellent plan adapted to local conditions.

These experts have all learned about the solidity of frozen soil at ultra-low temperatures. Its hardness is no worse than concrete.

The analysis revealed the demerit.

While everyone was discussing, the test ingredients of the first batch of samples came out, which also made everyone stop the discussion and focus on the analysis and test report on the big screen.

"The cost is not much different from the surface lunar soil, but it is also very different. For example, the helium-3 content is relatively low. In addition, there is also water element, which should be the groundwater contained in the deep lunar soil." The geological expert spoke.

Well, there's this. Another expert pointed and said: "The composition ratio of the soil is also very different. There are fewer fine sand particles on the surface here, and the rock and soil particles are relatively coarse."

Compared with the constant alternating hot and cold changes on the surface of the moon, the environmental temperature of the deep lunar soil is relatively constant and does not change much. Therefore, the lunar soil rock and soil remain in a relatively primitive state, which is precisely for our study of the origin and composition of the moon. Very helpful. Another planetary expert looked at these data reports, rubbed his hands and said excitedly.

What he is talking about is a phenomenon or reason for the formation of lunar soil on the surface of the moon. Different from the formation of sand on the earth, the reason why the lunar soil on the moon's surface appears to be fine sand is because the moon's surface is constantly affected by changes in light.

As mentioned before, the temperature of places on the moon that is illuminated by sunlight can reach more than 100 degrees, while the temperature of places without sunlight can drop to more than 100 degrees below zero. This sudden change in heat and cold will cause the lunar soil to gradually break apart between expansion and contraction, and then eventually break from large rocks into fine sand as time goes by.

And as this expert said, sunlight only affects the surface lunar soil, and the deep lunar soil is not affected by these factors, so the ambient temperature is relatively constant, and the moon itself has relatively little geological movement. , so it can retain the original lunar soil composition that the moon's formation relied on.

This provides a very beneficial and direct research sample for studying the origin and formation of the moon, which is why he is so excited.

The groundwater content here is relatively rich. Where does this water come from? It cannot be brought by the moon. Some experts looked at the water content on the table and asked curiously.

Hearing this question, the experts present laughed.

An expert explained with a smile: "There are currently many theories about the source of water on the moon, and there are currently three mainstream and recognized theories in the academic community.

One external factor and two internal factors.

Let’s talk about external factors first. Many scientists have suggested that the reason why there is so much solid ice and groundwater content on the moon is because the moon has been hit by a lot of meteorites.

Because the moon has no atmosphere, these meteorites cannot burn in the atmosphere and can directly hit the moon. Therefore, a lot of water and solid ice in the meteorites remain on the moon.

Some scientists even believe that among the many craters on the moon, many craters and even the lunar maria may have been formed by the impact of huge ice meteorites or icy asteroids.

Under the irradiation of sunlight, these icy asteroids and meteorite fragments will slowly melt and then merge into the lunar soil, forming what is known as solid ice and abundant groundwater in the lunar soil.

As for the two internal factors, one is that there is water inside the moon. With the geological movement in the moon, this water will gradually emerge from the deep layers of the moon in the form of water vapor or liquid water, and then reach the surface. When it is affected by the low temperature outside, it solidifies into solid ice.

This view is also very mainstream, with many people supporting it.

As for the third theory, which is relatively niche, it is said that the water resources on the moon are water resources formed after the reaction of oxygen molecules in the manganese ore on the moon with other elements in the lunar soil, and then little by little add up. . "

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