METHOD OF TRAVERSING AN OUTBURST-PRONE COAL SEAM BY MINE WORKING

摘要

the invention u043eu0442u043du043eu0441u0438u0442u0441u00a0 to develop and u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430u0441u043du044bu0445 inclined coal u043bu043bu0430u0441u0442u043eu0432. the purpose is to reduce the time and cost of development u043fu0435u0440u0435u0441u0435u0447u0435u043du0438u00a0 mountain (gv) and improving the safety of the works. u043fu0440u043eu0445u043eu0434u00a0u0442 gv to u0432u044bu0431u0440u043eu0441u043eu043eu043fu0430u0441u043du043eu043cu0443 u043fu043bu0430u0441u0442u0443. a fire plug. of the gv in the reservoir u0431u0443u0440u00a0u0442 exploration wells (c) of two types.according to the u0431u0443u0440u0435u043du0438u00a0 with u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 power reservoir, the exit of volatile of u0443u0433u043bu00a0, speed u0433u0430u0437u043eu0432u044bu0434u0435u043bu0435u043du0438u00a0, u0434u0430u0432u043bu0435u043du0438u00a0 gas in the reservoir and the u0443u0433u043bu00a0. the first type of u0437u0430u0431u043eu00a0 u0431u0443u0440u00a0u0442 gv's u043fu043bu0430u0441u0442u0443 on u0440u0430u0441u0441u0442u043eu00a0u043du0438u0438 it equal to 2 - 3 the (gv, at a depth of 1.5 - 2 the diameter of the gv with u0440u0430u0441u0441u0442u043eu00a0u043du0438u0435u043c u043cu0435u0445u0434u0443, op u0440u0435u0434u0435u043bu00a0u0435u043cu044bu043c on computational for - m / u00a0u0435.on the suburban filth u0431u0443u0440u0435u043du0438u00a0 with first type u0443u0442u043eu0447u043du00a0u0435u0442 power reservoir and natural x - kee u0443u0433u043bu00a0. then u0431u0443u0440u00a0u0442 with the second type, the length of which u0440u0430u0441u0441u0442u043eu00a0u043du0438u0435 between them on u043du0430u0445u043eu0434u00a0u0442 calculation formulas.according to the u0431u0443u0440u0435u043du0438u00a0 these with choose the type of u043fu0435u0440u0435u0441u0435u0447u0435u043du0438u00a0 gv u043eu0441u0443u0449u0435u0441u0442u0432u043bu00a0u044eu0442 intersection of gv in the mode of u0441u043eu0442u0440u00a0u0441u0430u0442u0435u043bu044cu043du043eu0433u043e u0432u0437u0440u044bu0432u0430u043du0438u00a0 at length, u043eu043fu0440u0435u0434u0435u043bu00a0u0435u043c oh on the computational formula, with the power of not more than 0.45 m and a capacity of more than 0.45 m u043fu0435u0440u0435u0441u0435u0447u0435u043du0438u00a0 reservoir u043fu0440u043eu0438u0437u0432u043eu0434u00a0u0442 of u043fu0440u043eu0442u0438u0432u043eu0432u044bu0431u0440u043eu0441u043du044bu0445u043cu0435u0440u043eu043fu0440u0438u00a0u0442 yi site that a certain length.calculated by the formula. with the withdrawal of more than 35% of the volatile u0443u0433u043bu00a0 or power is in the most narrow zone of less than 0.3 m, the maximum initial velocity u0433u0430u0437u043eu0432u044bu0434u0435u043bu0435u043du0438u00a0, equal to or less than 2 l / min. the strength of u0443u0433u043bu00a0 scale m m u043fu0440u043eu0442u043eu0434u044cu00a0u043au043eu043du043eu0432u0439 more than 0.5 and pressure of gas in the reservoir is less than 0.4 mpa layer cross as u043du0435u0432u044bu0431u0440u043eu0441u043eu043eu043bu0430u0441u043du044bu0439.u0434u043bu00a0 u0443u043cu0435u043du044cu0448u0435u043du0438u00a0 length of gv crossing layer of tr to level u043fu0440u043eu0445u043eu0434u00a0u0442 reduced u044bu0441u043eu0442u044b by soil stratum, & amp; plast - reduced height with art u043eu0440u043eu043du044b roof stratum. the length of gv with its u043cu0435u0440u043eu043fu0440u0438u00a0u0442u0438u00a0u043cu0438 u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 on the relevant calculation formulas. 1 u0437.u043f s - lu, 3). on the sp on the sl yu