冀鹏飞. 含瓦斯水合物煤体不同孔隙饱和度试验研究[J]. 煤矿安全, 2019, 50(8): 27-31.
    引用本文: 冀鹏飞. 含瓦斯水合物煤体不同孔隙饱和度试验研究[J]. 煤矿安全, 2019, 50(8): 27-31.
    JI Pengfei. Experiments on Different Pore Saturation of Coal Containing Gas Hydrate[J]. Safety in Coal Mines, 2019, 50(8): 27-31.
    Citation: JI Pengfei. Experiments on Different Pore Saturation of Coal Containing Gas Hydrate[J]. Safety in Coal Mines, 2019, 50(8): 27-31.

    含瓦斯水合物煤体不同孔隙饱和度试验研究

    Experiments on Different Pore Saturation of Coal Containing Gas Hydrate

    • 摘要: 煤层瓦斯固化防突技术利用含瓦斯水合物煤体储气量大且能改变煤体力学性质的特点,达到预防煤与瓦斯突出的目的。利用SHW-III型试验设备进行不同孔隙饱和度下含瓦斯水合物煤体的合成试验。结果表明:瓦斯水合物的声波波速可以表示合成情况,随着孔隙饱和度的增加而增大;预测的饱和度与试验方案最大相差4.18%,预测孔隙饱和度与计算孔隙饱和度最大相差4.92 %;煤体胶结性随瓦斯水合物煤体孔隙饱和度增加而变强。

       

      Abstract: Coal seam gas solidification and outburst prevention technology uses coal body containing gas hydrate to store large amount of gas and can change the characteristics of mechanical properties of coal body to achieve the purpose of preventing coal and gas outburst. SHW-Ⅲ type test equipment was used for the synthesis test of coal containing gas hydrate at different pore saturation. The result shows that: the acoustic wave velocity of coal containing gas hydrate can indicate the situation of synthesis, and it increases with the increasing of pore saturation. The maximum difference between the predicted and the scheme pore saturation is 4.18%, the maximum difference between predicted and calculated pore saturation is 4.92%; coal cementability increases with the increase of coal containing gas hydrate pore saturation.

       

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