贵州马依西二井田煤中硫特征和沉积环境探讨  

A Discussion on Coal Sulfur Features and Sedimentary Environment in Mayixi No.2 Minefield, Guizhou

作　　者：赵福平[1] 

机构地区：[1]贵州省煤田地质局一一三队,贵阳贵州550081

出　　处：《中国煤炭地质》2013年第7期8-12,共5页Coal Geology of China

摘　　要：依据井田地质勘查资料及煤质测试结果,对马依西二井田内可采煤层中硫的特征及与沉积环境的关系进行了探讨。结果表明,区内各煤层煤中硫含量变化较大,自下而上以底部30、29煤为高硫煤,煤中硫分最高可达7.2%,下部19至26为中高硫—高硫煤,17-1煤层为低硫煤,上部3至12-1煤层为中高硫煤;在平面上总体呈东南高、北西低的分布态势。聚煤环境是造成煤中硫差异的主要因素,17-1煤发育于泛滥平原相中,以成煤植物所含的原生硫为主,煤中硫含量低,而其它煤层形成环境因受海水影响较大,存在更多以硫化铁硫为主的次生硫而使硫含量较高。Based on minefield geological exploration data and coal quality tested results, discussed coal sulfur features and sedimentary environment in the Mayixi No.2 minefield. The result has shown that the variation of sulfur content is rather large in coal seams. From bottom to top, bottom part Nos. 30 and 29 are high sulfur coal seams with highest sulfur content 7.2%; lower part from No.19 to No.26 are medium high to high sulfur coal seams; No. 17-~ is low sulfur coal seam; upper part from No.3 to No.12-~ coal seams are medium high sulfur coal seams. As a whole, sulfur contents present high southeast and low northwest on plane. Main factor to cause different coal sul- fur contents is coal accumulation environment. The 17 ~ coal seam was developed in flood plain facies, the sulfur is mainly primary sul- iur in eoal forming plants, thus low coal sulfur content; while other coal seams forming environment were largely impacted by sea water with more secondary pyritic sulfur, thus causing rather high sulfur content.

关 键 词：煤中硫 沉积环境 马依西二井田 贵州 

分 类 号：P618.11[天文地球—矿床学]