贵州省织金县开田冲煤矿勘查区聚煤特征分析

Analysis of coal accumulation in Kaitianchong coal mine exploration area,Zhijin County,Guizhou Province

开田冲煤矿勘查区位于三塘向斜南断块的南西头,向斜的南东翼。含煤地层为二叠系上统龙潭组(P_(3)l),勘查区内可采煤层有2、6、16和20号共4层,6号和16号煤层全区可采,2号和20号煤层大部可采,可采煤层总厚平均8.34 m,可采煤层含煤系数为2.55%,采用总厚平均7.62 m,纯煤可采系数2.33%。可采煤层结构简单-较简单,稳定性为较稳定-稳定,为大部-全区可采煤层,在今后开采利用中会带来可观的经济价值。

Kaitianchong coal mine exploration area is located at the south west end of the south fault block of the Santang syncline and the south east wing of syncline.Coal-bearing strata are the Upper Permian Longtan Formation(P_(3)l).There are 4 mineable coal seams in exploration area,which are No.2,No.6,No.16 and No.20 coal seam.No.6 and No.16 coal seam are all recoverable in all district,and No.2 and No.20 coal seam in most area.The total thick of mineable seam is 8.34 m on average.The minable seam coal bearing coefficient is 2.55%.The total thick of pure coal seam is 7.62 m on average,and the recoverable coefficient is 2.33%.The structure of the mineable seam is simple-relatively simple,the stability is relatively stable-stable,and the mineable area is most-whole area,which could produce considerable economic value in the future exploitation.