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METHOD OF THE CURRENT FORECAST OF SUDDEN OUTBURSTS OF COAL AND GAS
METHOD OF THE CURRENT FORECAST OF SUDDEN OUTBURSTS OF COAL AND GAS
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机译：煤与瓦斯突然爆发的当前预测方法。
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摘要
FIELD: mining.;SUBSTANCE: the invention is pertinent to mining and may be used for forecast of hazards of coal and gas massifs outbursts. The technical result of the invention is an increase of precision of forecasts of outburst hazard of gas and coal massifs at fulfillment of the current forecast of sudden outbursts of coal and gas. For this purpose it is necessary to define the initial velocity of a gas release gн from the control blast-holes drilled on the potentially outburst-prone packs or their assemblage of a coal field before to start a cycle of operations on development of the coal fields. First they determine the ratios K of amplitudes of the high-frequency and low frequency parts of the spectrum of the acoustic vibrations generated by a drilling tool in a coal massif in the process of realization of development. On a base of indications of gн and K they carry out an estimation of gas and coal outburst hazard of a zone of a coal massif. At that uniformly an a step by step determine a complex index of outbursts hazardness P according to the expression P =( gн max ./ 4) + (K max / 3) and consider the a zone of the coal massif as an outburst-hazardous zone, if P≥ 2, and to not -hazardous zone, if P 2.;EFFECT: the invention allows to increase precision of forecasts on outburst hazards of gas and coal massifs.;1 cl, З dwg
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机译：领域：开采;物质：本发明与开采有关，并且可以用于预测煤和瓦斯块突出的危害。本发明的技术结果是在满足当前的煤与瓦斯突然突出的预测的同时，提高了对瓦斯和煤块的突出危险的预测的精度。为此，有必要在开始循环之前，定义从在可能易爆的煤层或其煤田组合上钻出的控制爆破孔释放气体的初始速度g н的发展对煤田的影响。首先，在开发的过程中，确定在煤块中由钻探工具产生的声振动的频谱的高频部分和低频部分的振幅的比率K。根据g н和K的指示，他们对煤质块体区域的瓦斯和煤层突出危险进行了估算。然后按照表达式 P =（g нmax ./ 4统一逐步确定爆发危险性的复杂指数 P ）+（K max / 3），如果 P ＆ge;认为煤质块的一个区域为突出危险区域。 2，如果不是 P <2，则进入非危险区;效果：本发明可以提高对瓦斯和煤层气突出危险的预测精度。1cl，Зdwg
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