| 摘要 |
FIELD: mining. ^ SUBSTANCE: previously laboratory analysis is carried out on coal from a bed and its packs to detect availability of elements and substances in them that may create compounds with water; natural cracking is detected, as well as cleat in the coal bed; wells are drilled from a bottomhole by coal, with length more than by 1 m of the mine skirting cycle; water is injected into the bed with continuous measurements of the methane, water pressure, injection time; the mine is tunnelled for the value of the hydrated bed with the speed that does not exceed methane release within permissible norms; in the area of bed hydration blast holes are drilled in the sides of the mine at each cycle to detect the hydration area. During arrangement of the mine, parameters are varied, which are related to injection of water into bed, maximum reduction of the released methane, optimising arrangement of the mine. ^ EFFECT: higher efficiency of development of gas-bearing coal beds. ^ 4 dwg |
