FIELD: mining industry, in particular, development of hard rocks in hindered conditions, when it is necessary to reduce the spread of the exploded rock mass, for example, at exploding near the cyclicflowline technology.
SUBSTANCE: the method consists in drilling of blast bore-holes, charging of then, placing of a mat composed of interconnected automobile tires on the bench surface, and fastening of it to tie rods installed in not deep bore-holes with the aid of ropes or than chains. Wiring of the blasting circuit and blasting of the sheltered bench. The tires of the adjacent mat strips are shifted relative to one another by half the diameter, and before the blast they are filled with fluid.
EFFECT: enhanced safety of blasting operations due to the reduction of scattering of rock pieces and sand bursts.
3 dwg
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|
RU2265796C1 |
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| SHELTER OF BLASTING AREAS BY TYRE MATS | 2006 |
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| COVER OF BLASTING SITES BY AUTOMOBILE TIRES | 2006 |
|
RU2314489C1 |
