When the Soviet Union dug 9500 meters to the earth, it was surrounded by diamonds and gold. Why not dig?

The Soviet Union dug 9500 meters underground and found a stratum containing a lot of gold and diamonds. They continued to dig down until the depth was12262m, and the Soviet Union terminated the project? Great project? .

Why did the Soviet Union dig such a deep hole? Speaking of the Soviet Union? Dig through the earth? This plan is actually very interesting, because it happened during the cold war between the United States and the Soviet Union. At that time, the United States and the Soviet Union competed with each other in various fields. As long as one party makes a new invention, the other party immediately follows suit, so there are some interesting stories circulating.

Story 1: It is said that pens and ballpoint pens can't write in weightless space, so American scientists spent a lot of time and money to finally develop a pen that can write in space? Space pen? . Just as they were proud of their research results, news came from the Soviet Union: We have solved the problem of writing in space and have been using pencils! Story 2: In the field of supersonic aircraft, the heat dissipation of aircraft fuselage has always been a big problem for all scientists. American scientists believe that only titanium can solve this problem. But the Soviet Union successfully developed a Mach 3 plane? MiG -25, this plane not only exceeds the speed of sound by three times, but also solves the heat dissipation problem of the fuselage. The United States has always wanted to know what new materials the Soviet Union used. Finally, one day, they observed the plane at close range, and at the moment of touching the fuselage, everyone was stupid. Stainless steel? ? The above story is about the cold war between the United States and the Soviet Union. Although it contains fictional plots, it also shows that the two countries have spent a lot of manpower and financial resources to accomplish some incredible things in order to surpass each other. Soviet Union? Dig through the earth? The plan happened during this period.

? Dig through the earth? To explore the secrets under Moho! Moho surface refers to the interface between crust and upper mantle. Scientists are very curious about the material and structure of this surface. In order to find out this fact, American scientists first proposed? Drilling plan? A drill bit that hits below the earth's crust. Although the United States first started this plan, it was eventually cancelled due to financial problems. When the news was known by the Soviet Union, they decided to conduct a crustal drilling to prove that they were stronger than the United States!

1970, Soviet Union? Super drill? The plan began, and they kept digging. At 9500 meters, they found a lot of gold and diamonds. After testing, the content of gold and diamonds in this stratum is 20 times higher than that of commercial gold mines currently mined! However, due to the deep stratum, high mining cost and lack of mining conditions, the Soviet Union is not prepared to build a gold mine 9500 meters underground.

The Soviet Union's super drilling plan has reached 1993, and the whole drilling depth has reached 12262 meters, so it is quite difficult to continue drilling. Because the lower the drill bit goes, the greater the calorific value. Generally, the drill bit melts directly, and only the drill bit with special material can be used, so the drilling cost is also quite high. In addition, the drill bearing can't stand the pressure. The longer the drill shaft is, the softer it will become, and it will twist directly like noodles when it rotates! So this project has to stop.

The drilling depth of the Soviet Union has far surpassed that of the United States, making it the deepest country in the world. Only they know whether the project has brought value.