Live Wilderness Adventure

The hustle and bustle of the outside world is thousands of miles away, and Bi Fang, who is on top of the world, naturally cannot know.

In the confined and narrow space, he was leaning against the snow wall to measure the size of the space, and at the same time taught the audience how to save themselves after encountering an avalanche.

"The release process of avalanche usually goes through three stages: first, under certain snow conditions, external factors cause part of the snow layer to be sheared, fractured and dislocated, causing small scars to appear in the fragile snow; then, such small scars will 'Infecting' the surrounding snow layer, the scars gradually expanded, causing the surrounding snow layer to dislocate; finally, the snow on the hillside continued to collapse like dominoes, forming a scar on the calm hillside, the scar eventually fell off, and the avalanche also Falling down, this avalanche can be avoided by looking ahead."

“Of course, there are also unpredictable types, such as slab avalanches, which are characterized by a linear crack in the snow block in the area where the avalanche originates. It looks like a whole slab of snow has collapsed. The crack growth is sometimes a few Hundreds of meters long. Even if the board is thin, the total volume of these moving snow can be staggering.”

[What kind of avalanche did Lao Fang encounter? 】

"Although I can't see the barrage now, I know you will definitely ask me what kind of avalanche I encountered this time, but in fact, I don't know, it's too dark at four in the morning, I can't watch it carefully, if the satellite captures it, I don't know. If so, you should be able to see,"

Bi Fang shook his head. He always felt that this avalanche might not be accidental, otherwise why would he be so unlucky this time?

"If an avalanche is already in front of you, take a deep breath, hold your breath, and if there are trees, rocks or solid objects around, hold on tight, because the impact of the avalanche is very strong, try not to be washed away by the snow flow."

"If an avalanche happens to happen under your feet, try to jump up and run up the break line. However, the speed of the avalanche is usually very fast, and it is too late to make such a reaction. If you are unfortunately caught in the snow flow, you must do it against the current. In the swimming posture, move the limbs upwards, as far as possible on the surface of the snow flow, and the shallower the burial, the greater the chance of survival."

"When you are buried by the snow of the avalanche and you cannot break free, you must reduce your activities and slow down your breathing to save your physical energy. Some emergency breathing apparatus can help the person in distress last for dozens of minutes. Of course, you can also try to rescue yourself, through the body's Shake to widen the surrounding space little by little, free up your hands to swim up to the swimming pool, but without certain skills and judgment, I do not recommend doing this, because the process of widening the space is very physical, and the consumption of physical strength also means Increased oxygen consumption increases the risk of suffocation, and you can't tell how deep you're buried, and the deeper you go, the greater the risk."

[In other words, although the space has become larger now, is it okay for Fang Shen to keep talking? Will it increase the consumption of oxygen? 】

[Yeah, although everyone else uses oxygen cylinders, this little space won't last long, right? 】

"After the avalanche, we are lucky to be in a situation like ours. If you encounter such a situation, there is no need to go out at all. It is fine to stay here for a day. As for the problem of oxygen, there is no need to worry at all, as long as How long does one cubic meter of air last for a person to breathe?"

Bi Fang stretched out a palm, and under the illumination of the headlight, the audience could clearly see five fingers.

Although Bi Fang has to pretend that he can't see the barrage, he can answer questions in a more contextual way to ensure audience interactivity.

Five fingers, this is... five minutes?

The audience thought about it and guessed a time, about five minutes per cubic meter, which is almost the same number.

"Five hours."

puff!

Five hours?

Are you kidding me?

[Five hours, crazy? 】

【Is this the Turtle Breathing Technique? 】

[I have read a novel written by a street-beating author named Crustacea. I heard that the Turtle Breathing Technique is because the turtle can exchange gas through the organs near the G gate in the water. I don’t know if it’s true or not.]

[If the person who said this is Fang Shen, I would be absolutely impossible]

In any case, it is unbelievable that one cubic meter of air can breathe for five hours.

"I know some of you are definitely not good. In fact, you will know if you do a simple addition and subtraction. I will give you a question." Bi Fang smiled, then pondered for a while, and said after a while.

"It is known that in normal air at an atmospheric pressure, an average adult male inhaling about 0.5 cubic meters of air per hour, with an oxygen concentration of 21%, breathes 0.5 cubic meters of air per hour when he remains still. At the same time, 5% oxygen is consumed, and the exhaled gas contains about 16% oxygen and 4% carbon dioxide. But when the oxygen concentration drops to 6%, and the carbon dioxide concentration reaches 8%, the human heart will stop beating within a few minutes, There is a man trapped with only one cubic meter of air, how long can this man hold on until rescue?"

outrageous!

[I've graduated from the **** university, can't I get rid of the math problem? 】

【Algebra! 】

[It turns out that mathematics is not only used for grocery shopping, it is really useful, woo woo woo. 】

【Forget it, forget it】

【Forget it】

"Air has two functions for human breathing. One is to provide sufficient oxygen for inhalation. Inhalation in an hour is about half a cubic meter. On the other hand, air is also responsible for the diffusion of carbon dioxide exhaled by human beings. To complete this task, it is probably necessary to 30 cubic meters per hour, which is the norm for healthy living."

"There have been incidents of sudden death by running while wearing a mask. The fundamental reason is that the carbon dioxide in the exhaled air did not have time to diffuse and was sucked back."

"I don't know if anyone has calculated the result now, but I can tell you right now that the answer is about 5.2 hours, of course, this is a rough estimate, the actual situation is different. Because of the oxygen content in the air after breathing for a short period of time If it is low, people will increase the depth of breathing and even yawn, coupled with the rapid breathing rate in a small enclosed space, 5.2 hours is an ideal state, basically three hours for ordinary people to burp easily.”

Bi Fang raised his head and looked around, UU was reading www. uukanshu.com fully displays the confined space.

"There are at least ten cubes here, there is no need to worry about the oxygen problem, and it's okay to talk, but we still have to get out as soon as possible, because the stability here is doubtful, it is likely to collapse, we can't stay here forever. Random digging can affect the stable structure of the entire space, so we go out from the hole we dug.”

Bi Fang looked at the entrance of the cave that he and Dan Zeng had come to, and began to pull out the snow in the cave, and at the same time kicked Yao Jun, who had collapsed on the ground.

"What are you doing, I got up to work, do you still want to eat?"

Yao Jun was stunned for a moment: "Eating? It's batter again? I almost vomited."

"Unfortunately, I didn't bring many energy bars, so you can't even eat batter here, you can only eat energy gels."

"yue!"

Thinking of the snot-like energy gel, Yao Jun almost retched and could only reluctantly get up from the ground.

"Damn, I really work hard."