The strata behavior rule of Longwall face with individual props in shallowly buried coal seam covered with thick soil was summarized.
英
美
- 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。