深埋特厚煤层综放开采顶板导水裂隙带发育高度探查分析

摘要

The height of water flowing fractured zone in roof of a fully mechanized caving face in deep and extra thick seam was detected by observing the seepage loss of flushing fluid in surface borehole and downhole peep in test site,Cuimu Coal Mine,and the multivariate regres-sion analysis of 9 group detection results was carried out.The results showed that the height of water flowing fractured zone was closely related to mining height,working face length and min-ing depth,by which the multivariate regression formula for the height detection of water flowing fractured zone was obtained,its better applicability was proved through contrastive analysis with empirical formulas of the Regulation,Standard and pertinent literature.%以崔木煤矿为试验基地，采用地面钻孔冲洗液漏失量观测及井下窥视，对深埋特厚煤层综放开采顶板导水裂隙带发育高度进行探查，并对9例探查结果进行多元回归分析。探查分析表明导水裂隙带高度与煤层采厚、工作面宽度、开采深度密切相关，据此求得了裂高预测的多元回归公式，进行导水裂隙带发育高度计算，并与现行《规程》、《规范》及相关文献中相应经验公式进行对比分析，表明回归公式具有更好的适用性。