Based on the mechanism of water inrust at karst collapse column,the factors which affect the rational size calculation of the coal column applied to prevent water inrush are analysed,and the formulas to determine the minimum size of the coal column are ob
Based on the mechanism of water inrust at karst collapse column,the factors which affect the rational size calculation of the coal column applied to prevent water inrush are analysed,and the formulas to determine the minimum size of the coal column are ob
根据岩溶陷落柱突水的力学机理，分析了防突煤柱合理尺寸计算的影响因素；利用岩石强度理论得到了防突煤柱保持稳定所要求的最小尺寸计算公式。