山西省沁水煤田云泉矿区煤中硫赋存规律及地质成因研究

Study on the occurrence regularity and geological genesis of sulfur in coal in Yunquan mining area of Qinshui Coalfield,Shanxi Province

以煤质煤岩数据和以往钻孔资料为基础,查明了云泉矿区9号煤层中高硫煤主要分布在矿区的南部,15号煤层高硫煤主要分布在矿区的东南部与北部。通过相关性分析发现,云泉矿区灰成分指数K与黄铁矿硫含量呈正相关关系,促进了黄铁矿硫的形成;而煤灰成分中Fe_(2)O_(3)的含量与全硫和硫化铁硫含量呈正相关关系。通过煤相分析发现,云泉矿区在形成的过程中经历了较为频繁的海进海退,煤中硫的含量和形态受到海水影响较大。

Based on coal quality and previous drilling data, this paper finds that the grizzle of No.9 coal seam is mainly distributed in the southern part of Yunquan mining area, and the grizzle of No.15 coal seam is mainly distributed in the southeast and north of the mining area. The ash composition index K of Yunquan mining area is positively correlated with the sulfur content of pyrite through the correlation analysis, which promotes the formation of pyrite sulfur;the content of Fe_(2)O_(3) in the coal ash composition is positively correlated with the content of total sulfur and iron sulfide sulfur. Through coal facies analysis, it is found that Yunquan mining area has experienced frequent sea transgressions and retreats during the formation process, and the content and form of sulfur in coal are greatly affected by seawater.