近年来的实践表明,河兴煤矿C8煤层局部预测突出危险性参考临界值和真实临界值不符.针对河兴煤矿采用的局部预测指标钻屑瓦斯解吸指标K1及钻屑量S不具有针对性和有效性的问题,而是仅仅参照《防治煤与瓦斯突出规定》的推荐值,需要摸索和确定适合该矿C8煤层回采和掘进时突出预测指标及其临界值.通过统计分析、理论计算和实验室研究,对河兴煤矿C8煤层钻屑瓦斯解吸指标K1和钻屑量S临界值考察研究,确定了河兴煤矿C8煤层局部防突预测及效检指标临界值,对于河兴煤矿正常开展突出危险性预测工作具有重要意义.%In recent years,the practice shows that the local prediction of coal seam is inconsistent with the reference critical value and the true critical value of the C8 coal seam in Hexing Coal Mine,and the local prediction index of the gas desorption index K1 and the amount of drilling chip S is not pertinent and effective in Hexing Coal Mine,and these indexes simply refer to "coal and gas outburst prevention regulations" of the recommended values,it is necessary to highlight and determine the prediction index and critical value suitable for C8 coal seam.Through statistical analysis,theoretical research and calculation of laboratory,the local prediction index of the gas desorption index K1 and the amount of drilling chip S in Hexing Coal Mine were studied,the local outburst prediction and the critical value of efficiency check for C8 coal seam in Hexing Coal Mine were determined,and has great significance for the prediction of the outburst danger in the coal mine.
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