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针对国内某矿-960 m水平综放首采大断面7.5 m×3.3 m开切眼的支护难题,在支护难度分析的基础上,确定采用高强度支护体系和宽导窄扩的施工方式,选择具备高强度、高刚度、高可靠性和大延伸率的新型支护材料,进行了支护设计,确定了合理的支护参数,实践应用与矿压监测结果表明,该方案有效地控制了切眼围岩的变形与破坏,取得了良好的支护效果。
In view of the difficulty of supporting a large cross-section 7.5 m × 3.3 m in a fully mechanized top-caving mining -960 m mine in a certain domestic mine, based on the analysis of support difficulty, the construction of high strength and narrow support Mode, choose a new type of support material with high strength, high stiffness, high reliability and large elongation rate, carried out the support design, and determined the reasonable support parameters. The practical application and mine pressure monitoring results show that the program effectively Controlled the deformation and destruction of the cut rock, and achieved good support effect.