【摘要】 吸取不同围岩分类方法的科学实质,通过研究样本分布特征把不同分类方法统一起来,使分类的统计规律、聚类规律与样本分布特征协调一致,提高分类的可靠性。结合平顶山矿区煤巷赋存条件,取地压系数、围岩松动圈和节理发育程度3个指标,对平顶山矿区煤巷围岩稳定性进行综合分类,并以分类图直观表达了样本及样本分布规律,简化分类方法。提出围岩稳定性综合分类方法,研究矿区煤巷稳定性变化规律,得到评价围岩稳定性的统计判据,并根据巷道条件及实测信息评价巷道稳定程度,绘制出多指标围岩分类图。更多还原

【Abstract】 This paper takes the advantages of the scientific substances of the different rock classification methods and studies the characteristic of the sample distribution according to the different classification methods.With the sample distribution characteristic which increases the dependability of the classification,the statistics regulation and the synthetic regulation coordination were studied.According to the condition of Pingdingshan mining area,the overall classification for rock′s stability was proposed on the basis of the three indices of the ground pressure coefficient,the loosen area,and the joint propagation′s degree.The classification figure expresses the sample′s distribution regulation.It increases classification dependability,and simplifies the classification method.The statistical criterion for appraising rock stability was obtained by studying the coal roadways in Pingdingshan mining area.A new kind of stability overall classification method was put forward.Based on roadway condition and measured information,the stability was evaluated and the multi-index rock classification figure was presented.更多还原