中文摘要：

针对深井沿空留巷顶板出现的离层破碎难以形成承载结构甚至发生冒顶灾害的控制难题,综合现场调研、理论分析及实测方法,将其变形破坏形式进行归纳分类并深入分析,提出了“多支护结构”控制系统,研究了新系统的组成结构、控制原理、支护材料和支护时序。结果表明：1）顶板支护结构稳定性弱、跨度大、倾斜角度大和顶帮协同承载能力低是造成其变形破坏的主因;2）“多支护结构”控制系统包括强化锚固体系承载性能、强化碎裂煤岩体强度、强化顶帮协同承载结构和卸荷减跨,此系统可保证顶板结构完整,提高顶帮协同承载能力。研究成果在潘一矿东区进行推广应用,对类似条件巷道支护具有一定的理论意义和参考价值。

英文摘要：

To solve the problem of the separation and broken roof not forming a bearing structure or even causing caving disaster in deep gob-side entry retaining, with the deformation and failure forms of roof inducted and classified, failure reasons are thoroughly analyzed through field investigation, theo- retical analysis and field tests. The ＂multiple supporting structure＂ control system is proposed, and the component structure, control mechanism, support materials and support sequence of the new system are studied. The results have shown that 1） The main reasons that cause the deformation and failure of deep gob-side entry retaining roof are weak supporting structure, large span, large inclined angle, low coor- dination capacity of roof and sidewalls; 2） The ＂multiple supporting structure＂ control system, which includes bearing capacity enhancement of anchorage system, intensity of crack coal-rock mass, col- laborative bearing structure of roof and sidewalls, as well as unloading and span-cut, can ensure the structural integrity of roof and improve the coordination bearing capacity of roof and sidewalls. The re- search achievements, which have theory and reference value for roadway support with similar condi- tions, have been applied in the eastern area of Panyi coal mine.