【摘要】 本文就急斜长壁工作面顶板岩层沿倾向断裂后形成的岩块结构进行深人分析,推导出岩块间的内力计算公式,得出顶板岩块沿倾向形成“非对称三饺拱”结构,对顶板控制有实际意义。更多还原

【Abstract】 Rock structure formed of the break of roof rock along the slope in the steep-dipping longwall face is thoroughly analysed. A formula for calculating the internal force between rocks is derived."Unsymmestrical three-articulated arch" structure formed along the slope of roof stratum is drawn. These results of research has a practical significance for roof control.更多还原