I built the underground Noah's Ark

Chapter 41

Ye Linsheng glanced at it, but didn't understand.

Hu Buyan knew that Ye Linsheng couldn't understand, so he explained: "This is a satellite detection coefficient that I made based on the possible magnetic field effects, various radio waves, sound waves, vibrations, radiation, etc. .”

Ye Linsheng smiled bitterly: "I still don't understand."

Hu Buyan's eyes were piercing behind the glasses at the bottom of the wine bottle, and he didn't look like an old man at all: "Let me put it another way. If the alien probes come to the sky above the blue star, they want to detect the situation of the blue star." , will definitely adopt a series of methods. Then I made a reference data model for various factors that we may leak.”

"For example, on the surface of the earth, the whereabouts of human beings can be seen with the naked eye. Therefore, I set the coefficient that the surface may be discovered by alien satellites as 100."

"With a depth of one meter underground, if all factors such as visible light, radio waves, sound waves, vibrations, and radiation are taken into consideration, the coefficient of possible detection is 50. This is doubled, that is to say, the possibility of detection is directly reduced by double. "

"At a depth of ten meters underground, the coefficient of discovery is 30. You will find that the deeper the depth, the lower the coefficient of discovery."

Ye Linsheng suddenly realized: "Understood, 100 meters underground, the coefficient of discovery is 15."

"Yes. That's what it means. You will find that in the front, the change of this coefficient is quite large. Almost all of them are above 20%. However, after 1000 meters underground, the range of change is greatly reduced. After reaching a depth of 2500 meters, The changes are minimal."

"At 2500m the coefficient was found to be 0.5, but at 3000m it was 0.499. Almost no change."

"The deeper the depth, the smaller the amplitude. You understand?"

Ye Linsheng nodded: "Understood. According to this coefficient table, there is not much difference between the discovery coefficients of 2500 meters underground and [-] meters underground, almost negligible."

"Yes, the found coefficients are not much different, but the difficulty of construction is more than ten times, a hundred times smaller." When Hu Buyan talked about his professional issues, he seemed very excited, and even danced, "I According to some calculations, above 1000 meters in Datong Town, the ground temperature level is about 40 meters, and the temperature rises by one degree. The ground temperature level of 1000 meters underground is 80 meters, and the temperature rises by one degree. In conversion, the temperature at 2500 meters underground is higher than that on the ground About 42 degrees."

"Using the underground river can easily resolve the problem of temperature. Moreover, at a depth of 2500 meters underground, the increase in atmospheric pressure is also very suitable, and the human body has almost no feeling. It will soon adapt."

"Of course, this geothermal level is my guess. The real situation can only be known after excavation. However, there should not be a huge difference."

"So, all the dungeons only need to be built at about 2500 meters." Hu Buyan said.

Luo Ji said excitedly: "In this way, the difficulty of our task will be greatly reduced. We can build a thousand or ten thousand dungeons."

At this time, Ma Xingkong raised his head suspiciously: "Do you really think there will be aliens appearing?"

Hu Buyan touched the beard on his chin: "I don't believe it anyway. However, they want to build a dungeon, and they also presuppose the premise of an alien detection spacecraft. Of course, I have to provide some professional advice."

Ye Linsheng smiled faintly: "You'd better believe it. Otherwise, if I spend all my billions of worth here, am I crazy?"

Ma Xingkong suddenly realized: "For your persistent spirit, although I don't believe it, I am willing to cooperate with you. I will take a good look at this design drawing when I go back, and help you optimize it."

"Thank you everyone. I will have an important guest coming later, and then I will pull everyone out to give me a little more persuasion." Ye Linsheng said.

Hu Buyan didn't even raise his head: "It's okay to let me do academics, let me accompany you in drinking, don't do it."

Scientists speak so directly.

Ma Xingkong also declined: "I'm not good at socializing, talking to people, after three sentences, I'm definitely a professional."

Ye Linsheng smiled mysteriously: "You don't need to cooperate, it's best if you don't say a word, the cooler the better."

Luo Qingyu walked over quickly, and whispered in Ye Linsheng's ear, "Chairman Ning Yongsheng has arrived."

Ye Lin grew up and stood up: "The battle has begun, let's go!"

……

"Ning Dong, we meet again." Ye Linsheng smiled at Ning Yongsheng.

Ning Yongsheng was taken aback, feeling that this person was very familiar.

"Today I invite you to eat local specialties in Datong Town." Ye Linsheng quietly reminded Ning Yongsheng.

At this moment Ning Yongsheng completely remembered that this person was the young man whom he had met once at the commendation meeting of the Construction Department.

Originally, after Ning Yongsheng entered Datong Town, he was very uncomfortable with the senses here.

He vaguely felt that he had been deceived.

This Datong town is an out-and-out coal mining town.

The kind that relies on coal to eat coal.

There are basically no other industries.

Moreover, coal mine resources have also been excavated a lot.

In another ten years or so, the coal mines will be hollowed out.

The only difference is that this small town seems to be very lively, and there seems to be some major project going on.

Seeing such a mining town, his expectation of meeting Ye Linsheng dropped a lot.

And when he saw Ye Linsheng for the first time, his expectations were lowered again.

Because Ye Linsheng is too young.

How can such a person have the strength to support the strength of ordering a thousand shield machines?

He has decided to cancel this order.

However, after recalling the situation at the venue, he began to hesitate.

Obviously, this young man is very familiar with Zhong Hanliang, the director of the Construction Department, so familiar that he can make jokes.

You know, as the chairman of the shield machine manufacturing company, he only had one or two contacts with Director Zhong Hanliang, and it was just a handshake.

He can only look up to an official of Director Zhong Hanliang's level.

But this guy has a close relationship with Director Zhong Hanliang, and he talks casually.

Especially when the age difference between the two is dozens of years.

This young man is obviously not simple.

Definitely has a solid background.

He led Chairman Ning Yongsheng into the meeting room, and he pointed to the three scientists and introduced: "Let me introduce, these are my three technical consultants. The famous geographer Hu Buyan, the top construction expert in my country Ma Xingkong, and the famous fundamental physicist Roger."

Chairman Ning Yongsheng's pupils shrank again.

Ning Yongsheng didn't know the others, but he had seen Ma Xingkong.

An absolute veteran figure in the construction industry.

Professor Ma Xingkong was invited to participate in many large-scale buildings, but he refused them all.

There is only one reason for rejection, and that is lack of interest.

(End of this chapter)