江西二叠纪乐平期聚煤规律及其控制因素探讨  

Discussion on Coal Accumulation Rule and Its Controlling Factors in Permian Leping Age in Jiangxi

作　　者：刘慧 龚荣林 LIU Hui;GONG Ronglin(Energy Geology Brigade,Jiangxi Provincial Bureau of Geology;Geological Environment Monitoring Institute,Jiangxi Provincial Geological Survey and Exploration Institute)

机构地区：[1]江西省地质局能源地质大队,江西省南昌市330001 [2]江西省地质调查勘查院地质环境监测所

出　　处：《现代矿业》2022年第12期82-84,88,共4页Modern Mining

摘　　要：依据勘查资料,从含煤性、古生物、煤厚变化特点及富煤中心分布入手,采用以地层为基础、以聚煤规律为目的的二位一体的研究方法,运用现代沉积学理论,研究了江西二叠纪乐平期聚煤规律及其控制因素。结果认为,区内聚煤规律主要受盆内断裂控制,聚煤盆地属于内陆台盆型陆表海盆地,构造活动的阶段性导致乐平期聚煤作用可划分为早、中、晚期3个阶段,分别形成A、B、C 3个煤组。盆内断裂控制了泥炭沼泽的发育和演化,沉积体系主要有冲积平原、障壁潮坪和河控三角洲,其中障壁潮坪成煤较好,较稳定,冲积平原和河控三角洲成煤较差,不稳定。Based on the exploration data,starting from the characteristics of coal-bearing property,paleontology,coal thickness change and the distribution of coal-rich centers,using the two-in-one research method based on strata and aiming at the law of coal accumulation,using modern sedimentology theory,the law of coal accumulation and its controlling factors in the Permian Leping period of Jiangxi Province were studied.The results show that the coal accumulation law in the area is mainly controlled by the faults in the basin.The coal accumulation basin belongs to the inland platform basin type epicontinental sea basin.The stage of tectonic activity leads to that the coal accumulation in Leping period can be divided into three stages:early,middle and late stages,forming three coal groups A,B and C respectively.The faults in the basin control the development and evolution of peat mire.The sedimentary systems mainly include alluvial plain,barrier tidal flat and river-controlled delta.The coal-forming of barrier tidal flat is better and more stable,while that of alluvial plain and river-controlled delta is poor and unstable.

关 键 词：二叠纪乐平期 含煤性 聚煤规律 控制因素 

分 类 号：P618.11[天文地球—矿床学]