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用压汞法和ＣＯ２吸附法对突出区煤的孔隙结构特征进行了研究。结果表明，突出区煤的孔隙率、孔容、比表面积等均随其碳原子摩尔分数Ｘｃ的增大而增大，且上述参数均与煤样点的位置有关；研究了煤样存在两个分形维数Ｄ２和Ｄ３，Ｄ２随Ｘｃ和孔隙率的增大而增大，而Ｄ３和ΔＤ却正好相反。由煤样的采点位置和开采中的实际情况可认为：煤的孔隙率、压汞曲线滞后程度、中孔孔容和分维数Ｄ２及ＣＯ２比表面积越大，分形维数Ｄ３和ΔＤ越小，煤的突出危险性越大。
The pore structure of coal in the outburst area was studied by mercury intrusion and CO2 adsorption. The results show that the porosity, pore volume and specific surface area of coal in the outburst area increase with the increase of the mole fraction of carbon atoms Xc, and the above parameters are related to the location of the coal sample. The existence of two The fractal dimension D2 and D3, D2 increase with the increase of Xc and porosity, but the opposite of D3 and ΔD. From coal mining location and the actual mining situation can be considered: coal porosity, mercury mercury curve lag degree, pore volume and fractal dimension of D2 and CO2 the larger the specific surface area, the fractal dimension D3 and ΔD more Small, prominent coal the greater the danger.