地层物性特征在金沙县龙凤煤矿中的应用

Application of Strata Physical Characteristics in Longfeng Coal Mine,Jinsha County

不同岩性层(组)的视电阻率、自然伽玛、中子孔隙度测井曲线存在不同形态特征。根据这些差异,结合钻探成果资料,在龙凤煤矿区范围内对测井曲线进行综合对比。通过对矿区钻孔测井资料分析,归纳出该区龙潭组含煤岩层及茅草铺组、夜郎组、长兴组非含煤岩层的物性特征,确定了矿区含煤岩层中煤层的位置及煤层对比的标志层位,并在物性曲线上讨论了长兴组和龙潭组的地层分界线。

Logging curves, including apparent resistivity, natural gamma and neutron porosity, exhibit different physical characteristics in different rock layers （group）. According to those differences, logging curves are correlated comprehesively in Longfeng Coalmine on the basis of drolling data. By analysing of boreholes logged data within the ore district, the physical properties of coal-bearing strata as Longtan formation and non-coal stratas incl,ding Maocaopu formation, Yelang formation, Changxing formation, were summed up. The location of coal beds in coal-bearing strata and sign layers for comparison were determined, besides, stratigraphic boundary between Longtan Formation and Changxing Formation was also discussed on the curves.