It is important to understand the behaviour of voussoir beams in the design of underground excavations.There are a large......

基于砌体梁结构岩块平衡的几何条件,讨论了《矿山压力与岩层控制》教材中浅埋煤层开采岩层控制部分“短砌体梁”结构和“台阶岩梁......

The paper presents the influence of varying immediate roof thickness on the lower strong roof strata movement and failur......