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COMPLEX EXCAVATING COAL OF THIN AND MEDIUM THICKNESSES IN STEEPLY DIPPING AND INCLINED SEAMS
COMPLEX EXCAVATING COAL OF THIN AND MEDIUM THICKNESSES IN STEEPLY DIPPING AND INCLINED SEAMS
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机译:陡倾和倾斜煤层中薄壁和中厚壁的复杂开挖煤
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摘要
FIELD: mining industry. SUBSTANCE: complex includes drive of flexible working element with cutting tool and guarding fixture manufactured in the form of flexible through to which convex part rigid beam is fixed on side of face along entire height. Ends of beam are joined with the aid of couplings to flexible working element. EFFECT: improved excavation efficiency. 2 dwg
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