平项山八矿煤层底板构造曲率对瓦斯的控制作用

基于河南平顶山八矿瓦斯地质背景分析，揭示了煤层瓦斯含量与煤层埋深的关系，探讨了断裂构造对煤层瓦斯的控制作用。采用曲度方法定量计算了煤层底板等高线构造曲率，并分别进行了构造曲率与煤田钻孔实测瓦斯含量、矿井实测相对瓦斯涌出量及突出煤量和瓦斯量的相关性分析。结果表明，构造曲率与瓦斯含量、瓦斯相对涌出量、突出瓦斯量、突出煤量呈负相关关系，反映研究区己15煤层位于褶皱中和面以上，即煤层在向斜轴部受挤压而背斜轴部受拉张，正曲率值反映煤层受到拉张应力作用，负曲率值反映煤层受到挤压应力作用，曲率绝对值越大，受力越大。

Control actions of structural curvature of coal-seam floor on coalbed gas in the No.8 Coal Mine of Pingdingshan

Based on the geological background analysis of the No.8 Coal Mine of Pingdingshan,the relationships between coalbed gas content and burial depth were uncovered,and controls of faults on coalbed gas were discussed.Quantificationally calculated structure curvature of contour of coalbed floor,and analyzed its correlations with the measured coalbed gas content of exploratory boreholes,relative gas emission rate,outburst gas amount,and outburst coal amount.The results show that structure curvature is negatively ...