摘要
采用工业分析和形态硫分析的方法,定量研究了汾西矿区10号煤层的43个高有机硫煤样。结果表明,受潟湖泥炭沼泽沉积环境和海侵转换面影响,全硫在平面上以中高-高硫煤为主,并以位于汾西盆状复向斜轴部的河东井田为中心,呈环带状向外递减,推测与向斜受白壁关-偏店、汾河、孝义三条正断层控制,造成深水还原环境有关。煤层海相顶板或近距离上覆层在沉积过程中带入丰富的海水硫酸盐,全硫含量高但有机硫占比低,下渗时被厌氧细菌还原成的S0易与有机质结合生成有机硫,但受下渗深度限制,垂向上有机硫占比呈现往底部先升后降的规律。
By the means of proximate analysis and determination of sulfur forms, 43 high organic sulfur coal samples from No. 10 coal seam in the Fenxi mining area have been quantitatively analyzed. Due to the influence from lagoon peat bog sedimentary environment and the transgression transformation surfaces, coal categories according to the total sulfur content have mainly med-high to high sulfur coals and present annular zones descending distribution by taking the Hedong minefield in the Fenxi synclinal axis as a center on plane, which also controlled by three normal faults. It is speculated that the causation is related to deep water reducing environment. During the sedimentary process of marine facies coal roof or near by overlying strata had brought into abundant sea water sulfate. Although the total sulfur content is high, yet the proportion of organic sulfur content is low. In the process of seawater downward infiltration, the sulfates can be reduced into So by anaerobic bacteria which combined with organic matter to generate organic sulfur easily. Restricted by depth of infiltration, organic sulfur increases first and then decreases later vertically.
出处
《中国煤炭地质》
2016年第10期4-8,共5页
Coal Geology of China
基金
国家重点基础研究发展计划"973"项目(2012CB214901)
国家自然科学基金项目(41172146D0208)
关键词
汾西矿区
10号煤层
全硫
有机硫
分布特征
Fenxi mining area
coal No. 10
total sulfur
distribution features
