Chapter 466

Moss hardness.

It is a standard for mineral hardness.

Mohs hardness 1 means that objects are very soft, such as talc, and even worse than human skin.

As for the concept of 2.5... It's almost equivalent to nails or ice at minus 5 degrees.

This hard ore can also be broken by adults with sharp tools.

Among natural materials, diamond has the highest Mohs hardness, that is, the standard 10.

However, the hardness of synthetic polymeric diamond nanorods on earth has exceeded 10, which is the hardest material in China.

As for someone named posant... 0.0001?

In a sense.

In this era of hot spot update and iteration so fast, it is actually not low that this gentleman can make a stem harder than the wave on his own.

Look back.

Once the hardness of the stone in the groove is clear, the remaining problem is very simple.

Pan Guansheng and others put in three guiding robots, and each robot is connected with several ropes composed of high molecular weight polyethylene fibers.

Then, guided by the console, they moved to the left and right sides of the ice coffin through the boundary between the ice coffin and the groove.

Including the robot originally in the groove, there are just two on the left and two on the right.

The tasks of these robots are simple:

Through the pulse drill, open four holes with a certain radian at 3cm at the bottom of the ice coffin. The holes are close to the upper and lower sides of the ice coffin and away from the center.

After all, according to judgment, there may be a hole under the ice coffin,

It has four levels of wind when there is an ice coffin cover. Why does the wind after removing the ice coffin have six levels?

After the hole is opened, a high molecular weight polyethylene fiber rope will pass through the hole, and then directly pull up the ice coffin.

This method is a little more troublesome than manual entry, but the corresponding risk is lower - who knows if there will be any harmful substances ejected from the hole?

If a robot is destroyed, it will be destroyed. Human beings have no fault tolerance rate.

When ready, the machine starts.

Buzzing——

Soon.

Four pulse drills burst out.

Pulse bit is a kind of drilling equipment just launched a few years ago, and its popularity is not high.

It is specially used for stones with Mohs hardness below 3.5, which has certain limitations.

However, if something with obvious limitations can be developed by the front end, it must have some advantages.

In fact, the same is true.

This thing is very interesting - have you seen the tape measure for measuring things on the construction site?

Pulse drilling is similar to tape. The drill adopts high-strength elastic metal, which is usually retracted in the left receiving area of the guiding robot.

After leaving the equipment, the externally linked pulse current and neon (located outside the cave) reach memory feedback.

Finally, it thickens and hardens and pokes forward.

Generally, a guiding robot with a diameter of 50 cm has a soil detection chip on the right and drill bits in most areas on the left. It can dig a hole with a length of 2 meters and a diameter of 6 cm at most.

The long-term prospect of this robot mainly lies in the post disaster rescue of cities and towns, and it is actually very meaningful:

Pulse vibration can avoid secondary collapse as much as possible, and the hole can transport oxygen or liquid food.

In the same disaster, some people may just lack oxygen, some just lack water, and some may be seriously injured - although the first two say "only", once they lack oxygen and water, they may die earlier than the wounded.

This obstacle breaking guidance robot is aimed at the former, so as to spare time to rescue the seriously injured.

At present, the local pulse bit has been able to open an eight meter long channel, and the diameter of the machine is only 40 cm high and 1.5 meters wide.

Yes, of course.

Because the drill bit is flat inside, the hardness of the drill bit is relatively limited.

Therefore, it is still difficult to drill high-strength materials. The upper limit is the land with the strength of shells.

For example, there are 45 such guiding robots in the reserve of disaster relief materials announced by Xingcheng in 17 years.

In a word, this is something that may save many lives in the future.

Keep looking back.

Under the groove, on the edge of the ice coffin.

With the pulse current and the injection of neon.

The memory metal deforms rapidly, lengthens and thickens, and the hardened drill bit is more firm.

Soon.

Four underground holes near the upper and lower ends of the ice coffin were opened.

Although the distance between the hole and the ground is five centimeters, the ground at the bottom of the pit is not all hard stone, at least 70% of which is soil.

Therefore, the 5cm soil barrier is almost a small dessert that can be easily broken for the lifting work.

Then, under the guidance of magnetic suction equipment, four high molecular weight polyethylene fiber ropes passed through the hole.

Then it rises and is pulled up at the other end.

Finally, a cross-section similar to 凵 shape is formed, and the top end is connected with the multi-stage compression cryogenic tension unit.

When everything is ready.

Lu Chaoyang waved his hand:

"Lift the coffin!"

Boom——

As soon as pan Guansheng pressed the button, the cryogenic tension unit sent out a low roar:

This polar special equipment is not only solid, but also abandons delicacy, so the noise is not low.

However, Lu Chaoyang was not disturbed by these noises.

At this time, his eyes were staring at the ice coffin, concentrating on every little change.

According to the plan of the headquarters.

The maximum lifting weight of this plan a equipment is 8.6 tons, which is also the limit that can be lifted without affecting the cave layout.

Once the ice coffin exceeds this weight, it will not destroy the cave, but it is more or less necessary to break some earth to provide some operating environment for advanced equipment.

If it still can't be increased to 20 tons, we have to start other plans mentioned above.

At that time, it may cause irreparable damage to the colorful fruits in the cave, and even the vine will die completely.

This is undoubtedly a plan to kill the enemy for a thousand self losses... Eight hundred is not, but three hundred self losses.

Time passed second by second.

Finally.

When the equipment operated for about 15 seconds, the ice coffin showed signs of being moved.

At this time, the real number on the pull screen is

3.1 tons!

That is about 40% load!

Then pan Guansheng steadily controlled the console and calmly continued to increase the tension.

When the figure came to 5.4 tons, the ice coffin slowly began to float!

More than ten minutes passed.

The ice coffin finally rose to the ground. Su Bai and others quickly came forward and took finishing measures.

Seeing this, Lu Chaoyang gently exhaled:

I finally finished my task.

Then he glanced at the bottom of the pit subconsciously. According to Ouyang Dongshan's judgment, there should be a hole at the bottom of the pit.

However, to his surprise

Except for some disorderly moving marks, there is no large cavity at the bottom of the groove.

Not believing in evil, Lu Chaoyang took out the paper again and put it on the groove for a while.

As a result, the document paper naturally sags to the lowest point:

Obviously, there was no strong wind around.

Seeing this, Lu Chaoyang immediately frowned:

"Strange, where's the air outlet?"

Ouyang Dongshan on one side also seems very inexplicable.

If the temperature was not too low at the end, he even wanted to feel it again:

"This... This doesn't make sense

The wind direction is from the inside to the outside. It can't be that the internal rock wall has some characteristics. Double the wind from the outside and bounce back! "

Lu Chaoyang pursed his mouth and thought for a while. His eyes suddenly caught a glimpse of Su Bai and others who were taking off the rope not far away.

Suddenly.

A flash of lightning flashed through his mind and thought of another possibility.

He took the paper in one hand and darted to the edge of the ice coffin.

Then gently place the paper over the ice coffin.

The document paper sags naturally under the action of gravity, but it takes less than a few seconds

A slight sound sounded:

The front part of the drooping head of the document paper was shaking gently, making a rustle.

in other words.......

Ice coffin

Actually, it's the tuyere!

...........

Note:

As I said before, I'll send it out after the code is finished. The specific number per day is not guaranteed. There should be an average of 9000.

There is no intelligent push for power reduction. At present, there are only two drainage lists: monthly ticket list and best-selling list. Please ask for monthly ticket!