吐哈盆地库姆塔格煤田西山窑组煤层煤相分析
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摘要
以沉积学、煤岩学和煤相学理论为指导,运用煤相参数,结合宏观、微观煤岩特征分析煤相类型。结果表明:研究区宏观煤岩类型以暗淡型煤为主,显微煤岩类型以微镜惰煤为主,煤田西北部属潮湿-弱覆水环境,东南部属极潮湿-覆水环境;西北部煤层沼泽类型为干燥森林沼泽相,东南部以潮湿森林沼泽相为主,次为干燥森林沼泽相,沉积环境主要为浅沼相。综合分析认为,库姆塔格煤田煤层形成环境为低水位微弱水动力条件下、以潮湿森林沼泽为主、干燥森林沼泽次之的浅沼相,煤岩和煤相分析为聚煤环境分析、煤质评价、煤层对比等提供科学依据。
Based on the theory of sedimentology,coal petrology and coal petrography,using the coal facies classificationparameter combined with macroscopic and microscopiccoal characteristics,coal facies types have been analyzed.The study results showed thatcoal type by lastre of study area were mainly dull coal,microlithotype were mainly vitrinertite.Through the ratio of vitrinite and inertinite,it can showed that the northwestern coalfield was moist-weak water overlying environment while the southeastern coalfield was very moist-water overlying environment.According to the analysis of coal facies,it is summarized that the swamp typewas dry forest swamp in the northwest while mainly wetforest swamp and secondarily dry forest swamp in the southeast,the sedimentary environment was shallow marsh.Through comprehensive analysis of the results, we conclude that the coal forming environment of Kumtag coalfield was shallow marsh lakemade up by mainly wetforest swamp and secondarily dry forest swamp under low water level with faint water power.The analysis of the coal petrology and coal facies also provided some basis for the analysis of coal forming environment,assessment and the comparison of the seams.
Based on the theory of sedimentology,coal petrology and coal petrography,using the coal facies classificationparameter combined with macroscopic and microscopiccoal characteristics,coal facies types have been analyzed.The study results showed thatcoal type by lastre of study area were mainly dull coal,microlithotype were mainly vitrinertite.Through the ratio of vitrinite and inertinite,it can showed that the northwestern coalfield was moist-weak water overlying environment while the southeastern coalfield was very moist-water overlying environment.According to the analysis of coal facies,it is summarized that the swamp typewas dry forest swamp in the northwest while mainly wetforest swamp and secondarily dry forest swamp in the southeast,the sedimentary environment was shallow marsh.Through comprehensive analysis of the results, we conclude that the coal forming environment of Kumtag coalfield was shallow marsh lakemade up by mainly wetforest swamp and secondarily dry forest swamp under low water level with faint water power.The analysis of the coal petrology and coal facies also provided some basis for the analysis of coal forming environment,assessment and the comparison of the seams.
引文
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[12]代世峰,任德贻,李生盛,等.内蒙古准格尔黑岱沟主采煤层的煤相演替特征[J].中国科学:D辑:地球科学,2007,18(S1):119-126.
[13]吴翔,吴建光,张平,等.沁源区块2号煤层煤相展布特征及对含气量的控制[J].煤炭科学技术,2017,45(4):117-122.
[14]周璋,李守平.基于三道岭矿区含煤性的综合分析[J].科技成果纵横,2011(2):69-70.
[15]张宇航,王德利.新疆准东煤田东部矿区西山窑组煤层煤相分析[J].山东国土资源,2017,33(7):17-24.
[16]雷国明,周继兵,张东亮,等.准东煤田五彩湾矿区西山窑组巨厚煤层煤相研究[J].新疆地质,2012,33(3):347-340.
[17]聂浩冈,赵峰华,李玉宏.浅析吐哈盆地侏罗纪煤的煤相特征[J].新疆地质,2016,34(1):144-149.
(1)新疆地矿局第一地质大队.新疆鄯善县库姆塔格煤田新六区详查报告,2014
(2)新疆地矿局第一地质大队.新疆鄯善县库姆塔格煤田四区勘查报告,2012
[2]周春光,杨起,康西栋,等.煤相研究进展[J].中国煤炭地质,1998,8(4):17-23.
[3]DIESSELCFK.On the correlation between coal facies and depositional environments[C]Newcastle:Newcastle University,1986:19-22.
[4]DIESSEL CFK.Utility of coal petrology for sequence stratigraphicanalysis[J].International Journal of Coal eology,2007,70(1/3):3-34.
[5]邵龙义,高迪,罗忠,等.新疆吐哈盆地中、下侏罗统含煤岩系层序地层及古地理[J].古地理学报,2009,11(2):215-224.
[6]曹代勇,邵龙义,张鹏飞.吐哈盆地早、中侏罗系聚煤期古构造[J].古地理学报,1999,1(2):46-52.
[7]CALDERJH,GIBBINGMR,MUKHOPADHAYPK.Peat formation in a Westphalian B pidemont setting.Cumberland Basin,NovaScotia:implication for the maceral-based interpretation of rheotrophic and raised Paleomires[J].BullSocGeol Fr,1991,162(2):283-298.
[8]新疆地矿局第一地质大队.新疆吐鲁番一哈密聚煤盆地形成演化及聚煤规律[M].乌鲁术齐:新疆科技卫生出版社,1992.
[9]许福美,方爱民.山东兖州矿区太原组16号煤层煤相研究[J].煤田地质与勘探,2005,33(4):10-13.
[10]许福美,黄文辉,吴传始,等.顶峰山矿区39号煤层的煤岩学与煤相特征[J].煤炭学报,2010,35(4):623-628.
[11]代世峰,任德贻,唐跃刚,等.乌达矿区主采煤层泥炭沼演化及其特征[J].煤炭学报,1998,23(1):9-13.
[12]代世峰,任德贻,李生盛,等.内蒙古准格尔黑岱沟主采煤层的煤相演替特征[J].中国科学:D辑:地球科学,2007,18(S1):119-126.
[13]吴翔,吴建光,张平,等.沁源区块2号煤层煤相展布特征及对含气量的控制[J].煤炭科学技术,2017,45(4):117-122.
[14]周璋,李守平.基于三道岭矿区含煤性的综合分析[J].科技成果纵横,2011(2):69-70.
[15]张宇航,王德利.新疆准东煤田东部矿区西山窑组煤层煤相分析[J].山东国土资源,2017,33(7):17-24.
[16]雷国明,周继兵,张东亮,等.准东煤田五彩湾矿区西山窑组巨厚煤层煤相研究[J].新疆地质,2012,33(3):347-340.
[17]聂浩冈,赵峰华,李玉宏.浅析吐哈盆地侏罗纪煤的煤相特征[J].新疆地质,2016,34(1):144-149.
(1)新疆地矿局第一地质大队.新疆鄯善县库姆塔格煤田新六区详查报告,2014
(2)新疆地矿局第一地质大队.新疆鄯善县库姆塔格煤田四区勘查报告,2012
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