湖南省郴耒煤田含煤地层沉积环境及聚煤规律研究

Study on Coal-bearing Strata Sedimentary Environment and Coal Accumulation Pattern in Chenlei Coalfield, Hunan Province

郴耒煤田位于湖南省东南部,大地构造位置上处于华南加里东褶皱带之攸兰断坳中。区内含煤地层主要有下石炭统测水组和上二叠统龙潭组(南型),其沉积环境分别为浅海-潮坪和三角洲-潮坪。通过分析含煤岩系的沉积特征及聚煤规律,对区内煤炭资源进行评价:区内含煤地层龙潭组(南型)预测区有25个,预测潜在资源量近20亿t;含煤地层测水组预测区有18个,预测潜在资源量近1.6亿t。从预测资源量来看,本区龙潭煤系还有很好的找煤潜力,对测水煤系的评价,可为湘南地区寻找新的煤炭资源提供思路。

The Chenlei coalfield is situated in southeastern Hunan Province, tectonically on the Youlan faulted depression, South China Caledonian folded belt. Coal-bearing strata in the area have lower Carboniferous Ceshui Formation and upper Permian Longtan Forma?tion (southern type), their sedimentary environments were shallow sea-tidal flat and delta-tidal flat respectively. Through sedimentary characteristics and coal accumulation pattern analyses of coal-bearing rock series, carried out scientific assessment of coal resources in the area:25 Longtan Formation (southern type) coal-bearing areas have been predicted with potential coal resources close to 2 billion tons;18 Ceshui Formation coal-bearing areas close to 0.16 billion tons. From the quantity, the Longtan Formation coal measures has good prospecting potential, while for Ceshui Formation needs to be studied, thus the idea to prospect for new coal resources in southern Hunan.