中国煤炭地质
中國煤炭地質
중국매탄지질
COAL GEOLOGY OF CHINA
2014年
12期
36-39
,共4页
延安组%主要成煤期%岩相古地理%聚煤特征%宁中矿区
延安組%主要成煤期%巖相古地理%聚煤特徵%寧中礦區
연안조%주요성매기%암상고지리%취매특정%저중광구
Yanan formation%main coal-forming stage%lithofacies,paleogeography%coal-accumulation characteristics
宁中矿区地处鄂尔多斯盆地的西南缘，延安组1期为主要成煤期。运用典型钻孔剖面的测井曲线、岩性组合形态及大量钻孔含砂率等值线分析，研究了主要成煤期岩相古地理与聚煤特征。认为延安组I期沉积期矿区东部为湖泊、中西部为冲积成因洪泛平原沼泽的古地理面貌；主要可采煤层煤8层形成于曲流河侧向迁移和河道废弃后洪泛平原之上的沼泽环境，煤层西部厚度大，往东变薄直至尖灭，煤层硫分、灰分低。
寧中礦區地處鄂爾多斯盆地的西南緣，延安組1期為主要成煤期。運用典型鑽孔剖麵的測井麯線、巖性組閤形態及大量鑽孔含砂率等值線分析，研究瞭主要成煤期巖相古地理與聚煤特徵。認為延安組I期沉積期礦區東部為湖泊、中西部為遲積成因洪汎平原沼澤的古地理麵貌；主要可採煤層煤8層形成于麯流河側嚮遷移和河道廢棄後洪汎平原之上的沼澤環境，煤層西部厚度大，往東變薄直至尖滅，煤層硫分、灰分低。
저중광구지처악이다사분지적서남연，연안조1기위주요성매기。운용전형찬공부면적측정곡선、암성조합형태급대량찬공함사솔등치선분석，연구료주요성매기암상고지리여취매특정。인위연안조I기침적기광구동부위호박、중서부위충적성인홍범평원소택적고지리면모；주요가채매층매8층형성우곡류하측향천이화하도폐기후홍범평원지상적소택배경，매층서부후도대，왕동변박직지첨멸，매층류분、회분저。
The Ningzhong mine area is situated at the southwestern margin of Ordos Basin, the Yanan Formation member 1 is the main coal measures. Based on typical borehole logging traces, lithological assemblage pattern and large number of boreholes sand content iso?line, studied main coal-forming stage lithofacies, paleogeography and coal-accumulation characteristics. The result considered that the paleogeography during Yanan Formation member 1 time mine area eastern part was lakes, middle and western parts were fluvial flood plain swamps. Main mineable coal No.8 was formed on meandering river lateral migration flood plain peat bog environment, the coal seam is thick in western part, thinning eastward up to pinch out, low sulfur and ash content.
