中文摘要：

下向分层进路尾砂胶结充填采矿法顶板为胶结充填体,深部高应力下回采,顶板的稳定性直接关系到整个回采过程的安全。判别顶板的稳定性是安全回采的前提条件。通过理论分析并结合数值模拟、相似模拟等试验手段判别了顶板充填体的破坏机理,提出了充填体破坏形式及预防顶板破坏的合理布筋方式,确保了回采过程的安全。

英文摘要：

The stope roof is cemented tailings in downward delamination heading cemented tailings backfilling mining method,and the stability of roof is the key to safety mining under high-stress deep zone.The roof stability is the precondition of safety mining.The fail mechanism and patterns of backfilling roof is analyzed by theoretical analysis,numerical simulation and analog simulation in this paper.Finally,the reasonable reinforcing pattern is put forward to ensure the safety mining.