新疆准东煤田东部矿区西山窑组煤层煤相分析

Analysis on Coal Facies of Xishanyao Coal Strata in Eastern Mining Area of Zhundong Coalfield in Xinjiang Uygur Autonomous Region

摘要:

该文以沉积学、煤岩学和煤相学理论为指导，运用煤相划分参数分析煤相类型，结合宏观和微观煤岩特征，认为新疆准东煤田东部矿区成煤环境为相对干燥的森林沼泽，根据煤相参数的垂向变化，将研究区划分为3种煤相类型：干燥森林沼泽、湿地森林沼泽Ⅰ和湿地森林沼泽Ⅱ。单层煤沼泽类型一般下部为浅覆水森林沼泽或湿地森林沼泽，向上过渡为干燥森林沼泽，代表泥炭沼泽环境由潮湿逐渐变为干燥，覆水程度逐渐变浅，为全区的煤层对比、聚煤规律的认识等提供了理论依据。

Abstract:

Based on the theory of sedimentology, coal petrology and coal petrography, using the coal facies classification parameter, coal facies types have been analyzed. According to coal and rock macroscopic and microscopic characteristics of coal strata, it is summarized that the coal forming environment is a relatively dry forest swamp. According to the vertical coal facies parameters change, the study area is divided into three types of coal facies: dry forest swamp, wetland forest swampⅠand wetland forest swamp Ⅱ. Single coal swamp types are generally lower for shallow overburden water forest or swamp wetland forest swamp transition to dry up the forest swamp. It represents the peat swamp environment gradually become dry, wet water level becomes shallow gradually. It will provide the theory basis for coal strata contrast and the recognition of coal accumulating law.