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通过对开平煤田地质构造的研究,阐明了褶曲构造对开平煤田的控制作用,利用曲度方法定量计算了煤层底板等高线的构造曲率,分析发现研究区煤层气含气量与构造曲率呈负相关关系,即研究区9#煤位于褶皱中和面以上,煤层在背斜轴部遭受拉张,不利于煤层气的保存,在向斜轴部受到挤压利于煤层气的保存。
Through the study of geological structure in Kaiping coalfield, the control effect of fold structure on Kaiping coalfield is clarified, and the curvature of coal seam floor contour is calculated quantitatively by using curvature method. It is found that there is a negative correlation between the gas content of CBM and the tectonic curvature in the study area That is, the 9 # coal in the study area is located above the fold-neutral surface. The coal seam is stretched in the anticlinal axis, which is not conducive to the preservation of coal-bed methane and is squeezed in the syncline axis to facilitate the preservation of coal-bed methane.