This paper presents the structure models founded in shallow seam, the roof asymmetry arch with three articulations in ro......

Based on a large amount of site statistics in Shenfu mine area, combining with physical simulation and theoretical analy......

将直接顶视为可变形体，根据支架围岩关系的整体力学模型，从能量角度出发，证明了支架工作阻力与顶板下沉量存在类双曲线关系，并进一步探......