| 摘要 |
Device for roof failure from the material in the bunkers contains inductor with a flat coil, which is located above the hammer and is connected with converting-accumulating unit and voltage source. Device is located in the container with the cover, which is fixed on the wall of bunker. Inductor is executed in the form of two flat inducing windings, located in mirror to each other. Container with the cover and hammer are made from soft-iron material, the pin is located along the axis of container, one end of which is rigidly fixed with the hammer, and at second end the spring of turning is fixed. Additional wall is mounted under the hammer inside the bunker.
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