小牛煤矿晚二叠世含煤地层沉积环境与聚煤规律

Sedimentary Environment and Coal Accumulation Pattern of Late Permian Coalbearing Strata in Xiaoniu Coal Mine

摘要:

小牛煤矿位于贵州省内水城矿区的格目底向斜东段北翼，含煤地层为晚二叠世龙潭组，含煤性好。通过对小牛煤矿含煤地层及其含煤性的研究，确定了研究区的沉积环境是海陆过渡相中的三角洲沉积类型，并初步建立了沉积模式，龙潭早期和晚期均有较好的聚煤作用发生并叠加，是聚煤的最佳场所，含煤性最好。

Abstract:

Xiaoniu coal mine is located in the north of eastern Gemudi syncline in Shuicheng mining area of Guizhou province. The coalbearing strata are late Permian and coalbearing property is good. Through study on coalbearing strata and coalbearing property of Xiaoniu coal mine, sedimentary environment of the mine is determined to be transitional facies deltaic sedimentary type. Sedimentary model is established preliminarily as well. Good coal accumulation and superposition happened in early and late period. The deltaic deposit is the best coal accumulation place and the coalbearing property is best.