贵州黔西市长江煤矿可采煤层中常量元素地球化学特征及成煤环境分析  

Analysis of constant element geochemical characteristics and coal-forming environment in the mineable coal seams of Changjiang Coal Mine in Qianxi City,Guizhou Province

作　　者：张博[1] 杨维[1] ZHANG Bo;YANG Wei(Geological Exploration and Research Institute,Bureau of Coal Geological Exploration of Guizhou Province,Guiyang 550008,Guizhou,China)

机构地区：[1]贵州省煤田地质局地质勘察研究院,贵州贵阳550008

出　　处：《资源信息与工程》2023年第6期18-21,共4页Resource Information and Engineering

摘　　要：煤是一种重要的化石能源,其形成过程和成煤环境受到多种因素的影响。煤中常量元素及其氧化物能指示煤的形成环境和煤质特征,因此,研究煤矿可采煤层中常量元素的地球化学特征及分布规律,对深入了解该地区煤炭资源的形成过程和沉积环境背景具有重要意义。本文以贵州黔西市长江煤矿可采煤层为研究对象,通过元素比值法和灰成分分析法对其常量元素的地球化学特征及分布规律进行了研究。结果表明,该煤矿的可采煤层形成于湿润环境,且成煤环境水体盐度整体为中—低盐度。其中,12、13、15煤层属于受海水影响的泥炭沼泽中形成的较强还原性煤,而9、11号煤层则属于未受海水影响的陆相泥炭沼泽中形成的弱还原性煤。Coal is an important fossil energy resource whose formation process and coal-forming environment are influenced by various factors.The constant elements and their oxides in coal serve as indicators of the coal formation environment and coal quality characteristics.Therefore,studying the geochemical characteristics and distribution patterns of constant elements in the mineable coal seams of great significance for gaining a deeper understanding of the formation process and environmental background of coal resources in the area.This article focuses on the mineable coal seams of Changjiang Mine in Guizhou Province,analyzing the geochemical characteristics and distribution patterns of constant elements using element ratio method and ash composition analysis method.The results show that the mineable coal seams at this mine formed in a humid environment with a low to medium water salinity in the coal-forming environment.Specifically,coal seams 12,13,and 15 are classified as strongly reducing coal formed in a marine-influenced peat bog,while coal seams 9 and 11 belong to weakly reducing coal formed in a continental peat bog unaffected by the sea.

关 键 词：常量元素 可采煤层 长江煤矿 成煤环境 

分 类 号：P618[天文地球—矿床学]