METHOD OF AIRING EXCAVATION AREA IN PILLAR-LESS MINING

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to mountain industrial - ste. the purpose of u0438u0437u043eu0431u0440u0435u0442u0435u043du0438u00a0 - the u043fu043eu0436u0430u0440u043eu0431u0435u0437u043eu043fu0430u0441u043du043eu0435u2122 regime i & amp; u0430u043du0439u00a0 u0432u044bu0435u043cu043eu0447u043du043eu0433u043e station.this u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 u0434u043bu00a0 safe u043cu0435u0436u0441u0431u043eu0435u0447u043du043eu0435 u0440u0430u0441u0441u0442u043eu00a0u043du0438u0435, which at obtuse angle to the direction of u043cu0435u0436u043bu0430u0432u043du043eu0433u043e u0438u0441u0445u043eu0434u00a0u0449u0435u0439 u0446u0435u043bu0438u043au0430 u0441u0442u0440u0443u043c u043fu0440u043eu0445u043eu0434u00a0u0442 u0441u0431u043eu0439u043au0438 and u0441u043eu043eu0441u043du043e they u0431u0443u0440u00a0u0442 through u0432u044bu043du0438u043cu0430u0435u043cu044bu0439 pole on the u0432u0435u043du0442u0438u043bu00a0u0446u0438u043eu043du043du044bu0439 u0448u0442u0440u0435u043a next pole holes that communicate with the u0441u0431u043eu0439u043au0430u043cu0438. safe u043cu0435u0436u0441u0431u043eu0435u0447u043du043eu0435 u0440u0430u0441u0441u0442u043eu00a0u043du0438u0435 u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 mathematical s le.in the u0437u0430u0431u043eu00a0u043c u0441u0431u043eu0439u043au0438 crosspiece to establish u0432u0435u043du0442u0438u043bu00a0u0442u043eu0440 with pipeline. the last report to the u0441u043eu043eu0441u043du043eu0439 borehole.from the application of space u0438u0441u0445u043eu0434u00a0u0449u0443u044e jet air u043cu0435u0436u043bu0430u0432u043du043eu0433u043e u0446u0435u043bu0438u043au0430 u043eu0442u0432u043eu0434u00a0u0442 through pipeline u0432u0435u043du0442u0438u043bu00a0u0442u043eu0440u0430 with bar and log on u0432u0435u043du0442u0438u043bu00a0u0446u0438u043eu043du043du044bu0439 sh next, the track to the notch on u0444u043bu0430u043du0433u043eu0432u044bu0439 u0433u0430u0437u043eu0434u0440u0435u043du0430u0436u043du044bu0439 bias by u0433u0430u0437u043eu043eu0442u0441u0430u0441u044bu0432u0430u044eu0449u0435u0433u043e u0432u0435u043du0442u0438u043bu00a0u0442u043eu0440u0430 at the surface.u043eu0441u0442u0430u0432u0448u0443u044eu0441u00a0 part u0438u0441u0445u043eu0434u00a0u0449u0435u0439 of mine u0437u0430u0431u043eu00a0 stream u043eu0442u0432u043eu0434u00a0u0442 second u043eu043au043eu043du0442u0443u0440u0438u0432u0430u044eu0449u0435u0439 u0432u044bu0435u043cu043eu0447u043du044bu0439 pole of a u0438u0441u0445u043eu0434u00a0u0449u0443u044e spout shaft. in the resulting space by u043cu0435u0436u043bu0430u0432u043du043eu0433u043e u0446u0435u043bu0438u043au0430 and the second u043eu043au043eu043du0442u0443u0440u0438u0432u0430u044eu0449u0435u0439 u0432u044bu0435u043cu043eu0447u043du044bu0439 pole a place of an u0442u0438u043fu0438u0440u043eu0433u0435u043du043eu0432, able to provide u043bu00a0u0442u044c the decomposition gases, u0434u0435u0437u0430u043au0442u0438u0432u0438u0440u0443u044eu0449u0438u0435 coal.the enactment of the anti u043fu0438u0440u043eu0433u0435u043du043eu0432 u043eu0441u0443u0449u0435u0441u0442u0432u043bu00a0u044eu0442 remotely and continuously as u043fu043eu0433u0430u0448u0435u043du0438u00a0 second u043eu043au043eu043du0442u0443u0440u0438u0432u0430u044eu0449u0435u0439 develop. the entry into force of the first group of u0430u043du0442u0438u043fu0438u0440u043eu0433u0435 is u043eu0441u0443u0449u0435u0441u0442u0432u043bu00a0u044eu0442 after half of the incubation period u0441u0430u043cu043eu0432u043eu0437u0433u043eu0440u0430u043du0438u00a0 u0443u0433u043bu00a0.then the control content of the gas, u0434u0435u0437u0430u043au0442u0438u0432u0438u0440u0443u044eu0449u0438u0445 coal, u0433u0430u0437u043eu043eu0442u0441u0430u0441u044bu0432u0430u044eu0449u0435u0433u043e u0432u0435u043du0442u0438u043bu00a0u0442u043eu0440u0430 on the surface and in the u0432u0435u043du0442u0438u043bu00a0u0446u0438u043eu043du043du043eu043c conduit. in reducing the concentrations of these gases u043eu0441u0443u0449u0435u0441u0442u0432u043bu00a0u044eu0442 enter the next group of u0430u043du0442u0438u043fu0438u0440u043eu0433u0435u043du043eu0432. 1 il. mr yu - vj VJ n3.