【摘要】 基于弹性薄板理论,利用能量方法对巷道层状顶板的破坏进行分析,阐述了层状顶板巷道围岩的变形破坏特征,得出顶板下沉的位移解析解,并进而确定了顶板岩层破坏的临界荷载。结果表明,用薄板理论研究层状顶板的下沉及应力分布规律是合理的。更多还原

【Abstract】 Based on the elastic thin plate theory,this paper analyzed the damage of tunnel stratified roof using the energy method,expounded the distortion destroy characteristic of tunnel with stratified roof,and worked out the displacement analytical solutions of roof sinking,and thus determined the critical load of roof rock destory.It is shown that plate theory is appropriate for analyzing the subsidence and stress field pattern of stratified roof.更多还原