A way to automate the current forecast of sudden coal and gas

摘要

1.method of automated current forecast of sudden release u0443u0433u043bu00a0 and strip, including the generation of acoustic vibrations in the highlands are u043cu0435u0445u0430u043d u0438u0437u043cu043eu043c, continuous automatic measurement of the amplitude of the high and low frequencies and the factor of u043du0430u043fu0440u00a0u0436u0435u043du043du043eu0433u043e u0441u043eu0441u0442u043eu00a0u043du0438u00a0 u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430u0441u043du043eu0441u0442u0438 coal square asta indicator for acoustic prediction u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430u0441u043du043eu0441u0442u0438,equal relative amplitude high frequency and low-frequency parts of acoustic vibrations, by u043eu043fu0440u0435u0434u0435u043bu0435u043du0438u00a0 current u0437u043du0430u0447u0435u043du0438u00a0 u043am u043fu043eu043au0430u0437u0430u0442u0435u043bu00a0 u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430 u0441u043du043eu0441u0442u0438 acoustic prediction, u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 orderfurther continuously automatically control the concentration of methane in the atmosphere to develop and periodically u0438u0437u043cu0435u0440u00a0u044eu0442 strength q u0443u0433u043bu00a0 most u043fu0435u0440u0435u043cu00a0u0442u043eu0439 packs of coal-bed to face a, and these parameters are used u0434u043bu00a0 automatic adjustments to the current u0437u043du0430u0447u0435u043du0438u00a0 km, with u043fu043eu043au0430u0437u0430u0442u0435u043bu00a0 u0430u043au0443u0441u0442u0438u0447 u0435u0441u043au043eu0433u043e projection u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430u0441u043du043eu0441u0442u0438 in accordance with the expression;km - wide ratio measuring system device.;the aac is critical u043fu043eu043au0430u0437u0430u0442u0435u043bu00a0 u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430u0441u043du043eu0441u0442u0438 acoustic prediction in the absence of u0434u0435u0439u0441u0442u0432u0438u00a0 gas factor;;q is the air flow in the ventilation design, m3 / s;;cm and the bsff respectively current and background u0437u043du0430u0447u0435u043du0438u00a0 methane concentrations in the atmosphere of u0437u0430u0431u043eu00a0%;;2 (q) - u0444u0443u043du043au0446u0438u00a0 strength, u043eu043fu0440u0435u0434u0435u043bu00a0u0435u043cu0430u00a0 in accordance with expression of - strength (q u0443u0433u043bu00a0 in most u043fu0435u0440u0435u043cu00a0u0442u043eu0439 pack, pa, and q = 100 - (h - strength u0443u0433u043bu00a0, u043eu043fu0440u0435u0434u0435u043bu00a0u0435u043cu0430u00a0 others u043du043eu0441u0442u043du043eu043cu0435u0440u043eu043c, h is the depth of u0432u043du0435u0434u0440u0435u043du0438u00a0 cone u043fu0440u043eu0447u043du043eu0441u0442u043du043eu043cu0435u0440u0430 in array, mm;;is dk u0434u043bu00a0 correction parameter of the gas sensitive u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430u0441u043du043eu0441u0442u0438,;the current value of u043am u043fu043eu043au0430u0437u0430u0442u0435u043bu00a0 u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430u0441u043du043eu0441u0442u0438 acoustic prediction compared with the limit value of the km, with u043fu043eu043au0430u0437u0430u0442u0435u043bu00a0 u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430u0441u043du043eu0441u0442u0438 u0430u043au0443u0441u0442u0438u0447u0435u0441 one prediction, and if km km, before, the coal-bed u043eu0442u043du043eu0441u00a0u0442 to u043du0435u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430u0441u043du043eu0439, and if u043amKm, before, the coal-bed u043eu0442u043du043eu0441u00a0u0442 to u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430u0441u043du043eu0439.;2. method for u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0 1 or 2, so that critical u043fu043eu043au0430u0437u0430u0442u0435u043bu00a0 aac acoustic prediction u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430u0441u043du043eu0441u0442u0438 in the absence of u0434u0435u0439u0441u0442u0432u0438u00a0 gas factor and u043du0430u0432u043bu0438u0432u0430u044eu0442 depending on the planned stockpile reliability equal to 4.5 to 6.;3. way on any of the u043fu043f.1 and 2, u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0, correction parameter is dk accounting u0434u043bu00a0 gas factor u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430u0441u043du043eu0441u0442u0438 u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 in accordance with the expression