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本文在原有现场实测资料基础上，建立了将采场上覆坚硬岩层组视为多层组合含跨弹性基础岩梁的计算模型，并编制了专门计算分析程序。运用该计算模型着重分析了坚硬岩层组的各层挠度增减交叉特征、层间离层条件、层间作用力分布和岩梁载荷计算的新方法，使得顶板覆岩的极限跨距和老顶初次来压步距的计算预测方面取得新的进展。
In this paper, based on the original field data, a calculation model was established to treat the overlying hard rock stratum as a multi-layer composite rock with elastic foundation and a special calculation and analysis program was prepared. The calculation model is mainly used to analyze the variation characteristics of the deformation, the layer separation, the distribution of interlayer force and the calculation of rock beam load in hard rock formation. The method makes the ultimate span of overburden rock and the roof New progress has been made in the calculation and prediction of the first step-pressure step.