【摘要】 黄淮各矿区立井井壁破坏与地表下沉速度、下沉量、埋深、井筒净直径、井壁厚度、施工方法、工程质量等7个特征因素有关。将临涣、宿县、大屯3个矿区17个立井井壁破坏和未破坏的具体样本数据,用计算机进行模糊聚类运算,运算结果表明:①当截集λ=0.39时,可将模糊聚类井筒分成破坏和未破坏两类。②可以预测未破坏井筒在今后几年内会不会破坏,破坏快或破坏慢。更多还原

【Abstract】 Failures of shfats’ walls located in Xuhui Coalfield are related to characteristic factors including speed of surface subsidence, subsidence value,depth of shafts,thickness of shafts’ walls, constructure methods and engineering quality. Taking method of fuzzy aggregation analysis, particular data samples about 17 shafts’ walls located in Linhuan, Xiuxian and Datun coalfields are calculated.The results of calculation state clearly that: ——when = 0.39.shafts of fuzzy aggregation divide into failted group and fair group;——predictable shaft wall of sample X₁₆ has possibility of failure;because surface subsidence speed and accumulator of subsidence value is getting large, the levels of surface subsidence speed and the accumulator value are equal to the levels of failed Haichi shaft; there is a small failure possibility of sample X_l7,shaft wall of Linhuan colliery, and the shaft wall will keep good condition for 4 years; ——it is able to predict some shafts will fail at fairly quick speed, some——at relatively low speed so that collieries will take some measures to repair or reinforce the shafts depending on getting failure speeds of shafts’ walls.更多还原