By percussed planing means (E21C27/46)

E   Fixed constructions(158735)
E21C     ining or quarrying(17294)
E21C27/46                     By percussed planing means(69)

ethod for coal extraction using activated plough // 2461710
FIELD: mining.SUBSTANCE: method for coal extraction using dynamic plough involves cutting of deep advance slots in formation mass at the roof, soil and middle, working face, and further destruction of mass in two consoles weakened with slots are performed by shearing; at that, width of cut slot and cutting depth of consoles is set and adjusted along the strike due to turning angle relative to working face of actuator with cutting tool the cutters of which describe ellipsis trajectory, and shearing force is created due to external taper surface of actuator housing when the plough is being moved along the working face.EFFECT: improvement of coal extraction controllability on coal formations with complex structure; increase in depth of removed chips.

Dynamic plane for the extraction of kimberlite ore under the guise of powered roof supports // 2182966
The invention relates to mining machines for underground mining, and in particular to mechanisms and devices of shock-shearing effects on the vertical plane of the front face under the guise of powered roof supports, and can be used in dynamic planes for the extraction of kimberlite ore under the guise of powered roof supports and other minerals strength up to 8 kN/cm

Dynamic plane of powered roof supports for the extraction of kimberlite ore // 2120033
The invention relates to mining and mining machines in underground mining, and in particular to mechanisms and devices of shock-shearing effects on the vertical plane of the front face under the guise of powered roof supports, and can be used in dynamic planes with mechanical support for the extraction of kimberlite ore and other minerals with the strength to 8 kN/cm

Dynamic plane // 2114993

Shock plow // 2105148
The invention relates to a means for extraction of natural resources, in particular to plough system

Plow // 2023154
 
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