江西省煤炭资源分布特征及勘探方向

Distribution Characteristics and Exploration Direction of Coal Resources in Jiangxi Province

江西省属少煤无油气的能源紧缺省份,在当前新一轮找矿突破战略行动中,加大省内煤炭及伴生资源的勘探具有重要意义。通过分析全省煤系发育特征、解剖典型矿区含煤地质特征,总结全省煤炭资源潜力与分布,对煤层气和煤系石墨开展初步研究。结果表明,萍乐坳陷带为省内煤炭资源最富集区域,安源组和乐平组为最重要的含煤地层。通过在“红层”下找煤,新余梅山查明煤炭资源量8961万t,上饶新田查明煤炭资源量7059万t等。局部地区煤层气资源丰富,如付家圩和石上-曲江地区煤层气预测资源量均超60亿m^(3)。在赣南崇义、赣东北铅山地区的煤矿中发现了隐晶质石墨。建议优先对成熟煤矿区外围和深部开展找煤工作,同时加强“红层”下找煤力度,注重煤层气、煤系隐晶质石墨等伴生矿产的综合调查评价,扩大找矿效果。

Jiangxi province is an energy scarce province with less coal and no oil and gas.In the current round of strategic breakthroughs in mineral exploration,it is of great significance to increase the exploration of coal and associated resources within the province.By analyzing the development characteristics of coal measures in the province,dissecting the geological characteristics of coal bearing in typical mining areas,summarizing the potential and distribution of coal resources in the province,the preliminary research on coalbed methane and coal-measures graphite are conducted.The results indicate that the Pingle Depression is the region with the most abundant coal resources in the province,and the Anyuan Formation and Leping Formation are the most important coal bearing strata.By searching for coal under the“red layer”,the coal resources of Xinyu Meishan were identified as 89.61 million tons,and Shangrao Xintian was identified as 70.59 million tons.The central and western sections of the Pingle depression are rich in coalbed methane resources,such as the predicted coalbed methane resources in the Fujiaxu and Shishang-Qujiang regions,both exceeding 6 billion cubic meter.In addition,cryptocrystalline graphite was found in coal mines in Chongyi,southern Jiangxi and Yanshan,northeastern Jiangxi.It is recommended to prioritize the exploration of coal in the periphery and deep areas of mature coal mining areas,while strengthening the exploration efforts under the“red layer”,and paying attention to the comprehensive investigation and evaluation of associated minerals such as coalbed methane and coal bearing cryptocrystalline graphite,in order to expand the exploration effect.