中文摘要：

新疆准东煤田是近几年勘探确定的一个超大型煤田,已获得2136亿t探明储量,主要含煤地层中侏罗统西山窑组发育1～30层煤,可采煤层1～10层,可采煤层累积厚度19～87m。在该煤田中西部仅发育1个煤层,单层最大厚度可达87m。对该煤田中部矿区巨厚煤层煤相特征的研究结果表明,该煤层具有高的惰性组质量分数、低的灰分产率、低的凝胶化指数和相对高的结构保存指数;在泥炭沼泽形成时期,属于受物源影响较小相对干燥的高位泥炭沼泽;依据煤层中凝胶化指数的变化将该巨厚煤层划分出8个小层序;根据小层序内部凝胶化指数、结构保存指数和灰分产率的变化划分出水进型层序和水退型层序;该巨厚煤层以中间碳质泥岩为界划分为两个大的煤相旋回。每个旋回由下部水退型层序和上部水进型层序构成。这种构成样式受泥炭形成阶段的湖平面变化、基底沉降和泥炭的生长速率等因素的控制。

英文摘要：

The East Junggar Coal Field is a super large coal field confirmed by the prospection in recent several years,with a total proved reserve about 213.6 billion tons.The main coal-bearing Xishanyao Formation contains 1to 30coal seams,with 1to 10workable coal seams.The accumulated thickness of coals ranges from 19to 87meters.Only one coal seam was developed in the middle west of this coal field（the thickest part is up to 87meters）.The coal facies analysis of this thick coal seam reveals high inertinite content,low ash yield and gelification index,comparatively high tissue preservation index.This shows that the coal forming environment attributes to a raised and comparatively dry peat bog with low influence of provenance.Eight parasequences are divided from the single thick coal seam based on the vertical changes of the gelification index.The transgression and the regression parasequences are identified based on the vertical changes of the gelification index,the tissue preservation index and ash yield in the parasequence.This thick coal seam is divided into two coal facies cycles,each consisting of the regression in the lower part and the transgression in the upper part.The composing pattern was controlled by the lake level change,the velocity of basement subsidence and peat growth.