This paper applies elastic-plastic theory to analyse this problem and establish theory equation that can calculate the maximum coal floor damage depth.The measures wh...

• 应用弹塑性理论进行分析,建立了计算底板最大破坏深度的理论公式,并提出了初次来压时预防底板突水的措施,可供开采受底板承压水威胁的煤层时借鉴。