张双楼矿区山西组的沉积环境

为了解张双楼矿区含煤岩系的沉积环境,根据钻孔资料及井下勘探资料,分析了张双楼矿区山西组的沉积特征。结果表明,该矿区山西组形成于以潮下带—潮坪环境、三角洲、曲流河为序的过渡相沉积环境中;沉积地层较稳定,南部、西南部以砂岩为主,北部以泥岩为主,碎屑物由南向北搬运;7、9煤为主采煤层,沉积较稳定。该研究为认识该矿区煤层的赋存规律、确定开采方案等提供了理论依据。

Shanxi Formation sedimentary environment analysis in Zhangshuanglou mining area

This paper presents an analysis of the sedimentary characteristics of Shanxi Formation in Zhangshuanglou mining area,depending on the information of drilled well and borehole survey,in order to investigate sedimentary environment of the coal-bearing series in Zhangshuanglou mining area.The results show that Shanxi Formation was formed in transition phase sedimentary environment with a sequence of subtidal-tidal flat environment,delta,meandering river.The formation has more stable sedimentary strata and the south and south-west are dominated by sandstones while north by mudstones,showing that clastics were moved from south to north.The 7 and 9 coal seams occur as the main coal seams of more stable sedimentation.The research provides a theoretical basis for investigating the distribution of coal seams and determining the mining plan.