【摘要】 本文依据典型的回采巷道围岩变形量和护巷煤柱宽度之间的关系曲线,通过解多元联立方程组,计算徐州矿区回采巷道能保持稳定状态的煤柱宽度值和有关参数。更多还原

【Abstract】 Based on the typical curves of rib pillarwidth vs. deformation of rock surroundingmining workings and by solving a set of multi-ple-variate equations, the effective width thatcan sustain the stability of workings in Xuzhoucoal mining district was calculated. This will beof important reference value to the design andchoice of roadway support patterns.更多还原