FIELD: mining.
SUBSTANCE: combined plug includes suspended plug, allowing casing with axial cavity, in which below by cable traction it is pulled into expansion cone. Casing with axial cavity is implemented in the form of hollow truncated cone from flexible material of variable plasticity with the greatest flexibility in bottom part, for instance from rubber. Expansion cone is implemented from organic material, for instance from wood or plastic mixture, and from above to suspended plug it is located poly-factional particulate part with predominance of crushed stone of fraction 10-20 mm in first portions.
EFFECT: invention provides increasing of locking reliability of detonation production in charging cavity up to moment of total destruction of enveloping rock by combined plug.
3 dwg
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| COMBINED ORGANIC PLUG | 2010 |
|
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