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Priority to UAU201407414UpriorityCriticalpatent/UA94762U/en
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Спосіб боротьби з випинанням ґрунту гірничих виробок включає нарізування на ґрунті щілин. Щілини нарізують між боковими стінками виробки під кутом до бокових стінок ділянками, які повторюються в повздовжньому напрямку виробки.A method of combating the buckling of the soil of a mine workings involves cutting into the ground of cracks. Slits are cut between the side walls of the workpiece at an angle to the sidewalls sections, which are repeated in the longitudinal direction of workmanship.
UAU201407414U2014-07-022014-07-02
METHOD OF CONTROLLING MINING PRODUCTION SOIL
UA94762U
(en)
Cutting tool for coal mining, mechanical processing of rocks, use during rotary drilling or working asphalt, concrete or like material, provided with longitudinally extending grooves