摘要
以新密煤田翟沟井田勘探资料为基础,对井田区域特征、山西组煤层特征和沉积环境进行分析。研究表明:山西组下段为以泥坪+泥炭沼泽+泥坪沉积序列为主的潮坪沉积,山西组上段为以弱还原环境河流作用为主的三角洲沉积体系,山西组聚煤环境为滨岸潮坪环境;山西组二1煤层层位稳定,煤层结构简单,煤层厚度为0.82～12.20m,一般3-5m,平均厚度3.84m,煤层厚度的变化是受沉积环境、后期冲刷作用及构造作用综合作用的结果。
Based on exploration data in Zhaigou minefield, Xinmi coalfield carried out minefield regional characteristics, Shanxi Formation coal seam features and sedimentary environment analyses. The study has demonstrated that： the Lower Member of Shanxi Formation is a tidal flat of mainly mudflat ＋ peat bog ＋ mudflat sedimentary sequence, the Upper Member of Shanxi Formation is a delta sedimentary system of mainly fluviation in a weak deoxidation environment. Shanxi Formation coal-accumulation environment is in a littoral tidal fiat. Coal II1 in Shanxi Formation has a steady horizon; texture of coal seam is simple, coal thickness 0.82m-12.20m, generally 3m-5m, average 3.84m. Coal thickness variation is a result of combined actions of sedimentary environment, succeeding scouting and tectonic processes.
出处
《中国煤炭地质》
2012年第7期15-17,28,共4页
Coal Geology of China
关键词
翟沟井田
山西组
二1煤层
沉积环境
聚煤环境
Zhaigou minefield
Shanxi Formation
coal seam II1
sedimentary environment
coal-accumulation environment
