METHOD FOR WORKING THICK STEEP COAL SEAMS

摘要

use: u0442u0435u0445u043du043eu043bu043eu0433u0438u00a0 mining u0443u0433u043bu00a0. the essence of the u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0: coal layer u0440u0430u0437u0434u0435u043bu00a0u044eu0442 on floors and u043fu043eu0434u044du0442u0430u0436u0438 to fall in the reservoir. on the u043fu0440u043eu0441u0442u0438u0440u0430u043du0438u044e plast u0440u0430u0437u0434u0435u043bu00a0u044eu0442 on u0432u044bu0435u043cu043eu0447u043du044bu0435 blocks. the soil of the above u043eu0442u043au0430u0442u043eu0447u043du043eu0439 have a u043fu0440u043eu0432u043eu0434u00a0u0442 rig design. at the same time, the u043eu0442u043au0430u0442u043eu0447u043du043eu0439 develop in its roof u0432u043eu0437u0432u043eu0434u00a0u0442 artificial overlap.the artificial overlap u0432u043eu0437u0432u043eu0434u00a0u0442 from soil to roof stratum and protect the sublevel of the bypass valves to u043eu0431u0440u0443u0448u0435u043du043du044bu0445 species from the upper u043fu043eu0434u044du0442u0430u0436u0430. a u0431u0443u0440u00a0u0442 from drilling wells. u0437u0430u0440u00a0u0436u0430u044eu0442 wells bb and blow up. 1, z. s - lu, 2). sl with