Half-immortal civilization

"Teacher, the measurement has been completed. The depth of this crack is 832 meters, with a width of 1.2 meters and a height of 33 meters; the measured length is [-] meters.

The surrounding materials are mainly rocks, which contain rich iron particles and a small amount of copper particles.The rock composition is dominated by basalt and breccia, with a very small amount of sedimentary rock.

The metal content of the surface sandstone is 17%; the metal content of the deep layer is 19%, showing a steady increase trend.It is estimated that there is a huge metal core inside the moon!
There are no earthquake faults, but there are rock faults.Geology is relatively stable.Considering the low gravity of the moon, basically no change. "

One by one professional names are constantly scrolling, and geologists are discussing with each other.Zhou Xu and his team members could only stare blankly.But fortunately, I finally know that this is a solid and stable crack. The final result of the discussion is to explore this crack to see if it has actual use value.

The scientific research vehicle was advancing along the crack, and the seismic wave generator continued to work. In just three hours, it actually consumed [-]% of the energy of a vehicle.

But three hours of hard work also yielded wonderful results.This is a crack that slowly extends underground, and as the depth increases, the overall trend is slightly larger.The surroundings are not smooth, and it can even be said to be jagged; after all, it may be a lava cave, not a man-made cave.

The section that has been explored is more than 700 meters long, and the shallowest part is more than 200 meters deep from the ground, filled with a large amount of sediment, etc., and the bottom part has a bit of sedimentary rock characteristics; the deepest part exceeds a thousand meters.It is also beyond the capabilities of the detection equipment.

More than 200 meters! ! !

Seeing this data, Zhang Chen and his friends began to frown.This is not the earth. If it is on the earth, with the current technology, let alone more than 200 meters, more than 2000 meters can still be shot!The deepest oil well has exceeded 10 meters - [-] kilometers!

But here is the moon, and we have five scientific research vehicles. Although we carry a lot of instruments, a deep pit of more than ten meters is no problem; but more than 200 meters, it is a bit beyond reach!Make bricks without straw.Scientists are not gods!

for a while.These old experts are arguing endlessly; some people propose to dig here, isn't it just 200 meters!But more people suggested that looking elsewhere always found shallower caves.It's just that a question arises - are you sure you can find it below?And is it fast to find?do not forget.Our supplies are not abundant.It takes a space shuttle to deliver once in three days.Even like the current detection consumption.It is estimated that it can only support two days!
To do anything in space, you have to consider the cost!
In fact, everyone also understands that this underground cave can be discovered.There is definitely a lot of luck; but the depth of 200 meters is a bit painful!On the earth, apart from anything else, construction machinery can be produced in three or two days; but on the moon, you can't even find decent tools!You can't say, Boss Zhang, we're going to dig a cave and use construction machinery!

People don't know if they are willing to talk to you!God knows how much it would cost to send a machine capable of drilling 200 meters from the earth to the moon!
"Make a mark first, and we will explore the surrounding area for three to five days." Zhang Chen finally made a decision. In any case, the depth of 200 meters is not an easy task for the current geological expedition team.

Next to him, Zhou Xu opened his mouth, but finally remained silent; let these experts investigate first.In fact, Zhou Xu wanted to say that we have rail guns.Who said that construction machinery must be used to dig a hole!After the rail gun is fired, the soil here will be crushed, and then digging will be much easier.Of course, the rail gun also has certain dangers, in case the cave collapses!

So, in the end Zhou Xu opened his mouth, but still didn't speak; he was going to see the situation of the next investigation.It would be even better if you can find shallow caves.

It's just that the next situation is not ideal; that kind of cracks are indeed common, but most of them are in the ground below 300 meters, because the openings on the ground have been filled by the sand on the surface of the moon up!The surface of the moon is constantly being impacted, resulting in a large amount of sediment, and the slow flow of these sediments in the vibration, as well as the flow caused by the gravity of the earth, will eventually submerge all these caves.

In three days, 7 underground caves were found, but the shallowest one had a depth of 170 meters; and this underground cave was narrow.

"Go back to the original place!" Zhang Chen frowned; although no one could see the other party's face clearly through the reflective mask, the voice could still be heard.Obviously, this so-called top [-] expert in the world, as well as a large number of top experts, are helpless against the situation in front of them.Without tools, nothing works.

At this point, Zhou Xu finally had to speak. If we wait any longer, the materials consumed by the master company will be horrific. "Well, Professor Zhang, we don't have to dig, we can destroy it!"

"destroy?"

"Yes, you see that the Master Company has a powerful electromagnetic railgun. We can launch the railgun from space and penetrate the ground."

"That's a good idea," Zhang Chen wasn't angry—why didn't you say it earlier; instead, he asked with some thought: "But will this cause the ground to collapse? Will the cave be buried?"

"It's possible. But now a total of 8 caves have been discovered, and one was unsuccessful. We just need to find the next one. Now it seems that there are not many such caves on the moon."

"Okay, let's try with the first one first. It would be even better if it succeeds once." After thinking about it, Zhang Chen still didn't reject the suggestion.First of all, everyone really has no choice; in addition, as Zhou Xu said, there are many such caves anyway, as long as one can be successful, it is enough!
Ordinary electromagnetic railguns are not enough to excavate the earth's crust hundreds of meters above the ground. This requires the use of large railguns on the Rising Aircraft; however, the management of large railguns by the master company is very strict and requires high-level authorization to decode .It's just that Zhang Jingyuan nodded directly to this plan, but it didn't cause any trouble.Maybe for Zhang Jingyuan, he has paid so much anyway, so he doesn't care about more!

In addition, because of the shooting experience of Ceres and Mars, the master company is not a completely violent shooting, but a design that presents a certain angle: about 45° from the ground, and the direction is opposite to the direction of the cave. In this case, the aftermath of the vibration The impact on the cave will be minimized, and more importantly, after such shooting, the trouble of later excavation will be saved!A large amount of gravel, etc., will be thrown out by the impact of the projectile of the rail gun.

"Back, back, back 10 kilometers!" The shooting of the rail gun is terrifying, especially the rail gun on the Rise, which is definitely a representative product of destruction.

In space, the mammoth space shuttle Rising slowly floated into a brief stable orbit around the moon, then slowly turned around.Seen from the surface of the moon, a silver-white ghost is slowly floating in the sky! (To be continued..)
ps: There is a chapter above that is repeated. Although it has been deleted, the loss caused to you will be compensated for the free chapter as soon as possible.It's just that the VIP is free, and editing assistance is required.Sorry to have to wait until next Monday.