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Destruction under given conditions

05.07.2000

Is it difficult to cut a block in the shape of, for example, a cube from a rock? Until recently, it was very difficult: in any case, in quarries. Today the situation has changed: at the International Institute of Applied Physics and High Technologies (Moscow) a prototype of the UEM-200 mobile electric discharge facility has been created.

The principle of its operation - electro-hydraulic (electric discharge) - is that when a powerful current pulse passes in a liquid medium, an electrical breakdown is formed, and in it an expanding gas cavity, which creates a hydraulic shock of great destructive force. This method itself was discovered by the Leningrad inventor L. Yutkin back in the late 40s, but now, in an era of aggravation of all environmental problems, it attracts special attention.

The destruction produced by hydraulic shock is not accompanied by either shock or seismic waves, or the release of any toxic substances. That is why scientists from many countries of the world are currently occupied with the problem of using electric discharge technologies. A version of this technology, developed at the Institute of Applied Physics, is designed to destroy large pieces of rock and concrete blocks and can be used in the mining and construction industries.

To destroy rock or concrete, it is enough to drill channels (holes) in them, fill them with water and create a powerful pulsed electrical discharge. The fragments do not fly apart. and, most importantly, the shape of the split surface can be predetermined. Including close to flat, so cutting down a cube is an almost real task today. The mobile electric discharge unit UEM-200 has successfully passed production and operational tests at a number of enterprises in the mining and construction industries in Russia.

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