%0 Journal Article %T 皖北矿区回采巷道动态权值分类及其差异化支护 %A 李迎富 %A 华心祝 %A 王晓虎 %A 杨科 %J 采矿与安全工程学报 %D 2017 %K layer and lithology critical width of coal pillar global classification plastic ratio of surrounding rock dynamic weight sub-classification differentiated support %U http://ckxb.cumt.edu.cn/CN/abstract/abstract1015.shtml