SYSTEM OF WORKING OF GENTLY DIPPING COAL SEAMS Russian patent published in 2002 - IPC

Abstract RU 2180040 C1

FIELD: mining industry, underground working of coal seams. SUBSTANCE: system of working of gently dipping coal seams includes excavation of coal by breakage face, support of roof by installation of row of powered pillars and their subsequent advance. Breakage face is moved perpendicular to frontal line of row of powered pillars. In this case length of face, length of powered pillars and spacing of their shifting are assumed to be equal to spacing of main roof. EFFECT: raised operational safety and efficiency of control over roof. 1 dwg

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RU 2 180 040 C1

Authors

Jalevskij V.D.

Ignatov E.V.

Ryzhkov Ju.A.

Ignatov I.E.

Dates

2002-02-27—Published

2000-06-08—Filed