Mine support ; valves for individual props ; identification code 矿井支撑物.单立支撑的阀门.标识代码
2.
Design of roof controlling in individual props face in huaibei mining bureau 淮北矿区单体液压支柱工作面控顶设计
3.
The strata behavior rule of longwall face with individual props in shallowly buried coal seam covered with thick soil was summarized 实验和观测表明，尽管其上覆岩层的力学强度比较小，煤层埋深浅，但工作面初次来压步距大，矿山压力显现剧烈，周期来压台阶下沉量大。
