孙疃煤矿下石盒子组7~2煤层煤质发育特征及其地质控因
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摘要
淮北煤田孙疃煤矿下石盒子组72煤层的煤质发育特征及其地质控制因素的研究较为薄弱,不利于后期煤矿进行勘探开发部署工作。通过对孙疃煤矿钻孔资料进行分析,结合前人研究成果,系统研究了淮北煤田孙疃煤矿72煤层的宏观煤岩特征、显微组分特征、无机矿物含量、元素特征,以及煤的灰分、挥发分、发热量等工业分析指标,并从沉积环境、大地构造背景和岩浆活动等地质因素分析其对煤质的控制作用。研究发现,该区72煤层主要为河控三角洲沉积环境,其水体较浅,为弱还原环境,处于海退时期,是煤质发育的主要地质控因,煤层的埋深主要控制煤的变质程度,构造活动和岩浆侵入影响程度较弱,只对部分区域煤质有影响。
The study on coal quality development features and geological control factors for coal No. 72 in the Suntuan coalmine Xiashihezi Formation,Huaibei coalfield is rather deficient,thus the disadvantage to subsequent exploration and exploitation deployment.Through analysis of borehole data from Suntuan coalmine,combined with previous studies,systematically analyzed coal seam macrolithotype features,maceral features,and inorganic minerals content,elemental features as well as coal proximate analysis indices of ash content,volatile matter content and calorific values. Furthermore has analyzed coal quality control geological factors from sedimentary environment,tectonic setting and magmatic activities. The study has found that the coal No. 72 had been deposited in a regressive period fluvial delta shallow water weak reduction environment,thus the main geological control factor. Coal seam buried depth is mainly controlled coal metamorphism degree,the impacts from tectonic activity and magmatic intrusion are rather weak,only impacted coal quality in partial area.
The study on coal quality development features and geological control factors for coal No. 72 in the Suntuan coalmine Xiashihezi Formation,Huaibei coalfield is rather deficient,thus the disadvantage to subsequent exploration and exploitation deployment.Through analysis of borehole data from Suntuan coalmine,combined with previous studies,systematically analyzed coal seam macrolithotype features,maceral features,and inorganic minerals content,elemental features as well as coal proximate analysis indices of ash content,volatile matter content and calorific values. Furthermore has analyzed coal quality control geological factors from sedimentary environment,tectonic setting and magmatic activities. The study has found that the coal No. 72 had been deposited in a regressive period fluvial delta shallow water weak reduction environment,thus the main geological control factor. Coal seam buried depth is mainly controlled coal metamorphism degree,the impacts from tectonic activity and magmatic intrusion are rather weak,only impacted coal quality in partial area.
引文
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[14]程伟,杨瑞东,崔玉朝,等.贵州毕节地区晚二叠世煤质特征及其成煤环境意义[J].地质学报,2013,87(11):1763-1777.
[15]赵仁乐.基于煤岩煤质特征的成煤环境分析———以鲁西汶宁煤田新驿煤矿为例[J].中国煤炭地质,2017,29(6):14-19.
[16]刘志飞,魏迎春,贾煦,等.马家滩矿区延安组层序–古地理对煤岩煤质的控制[J].煤田地质与勘探,2018,46(3):28-33.
[17]王胜建,高为,郭天旭,等.黔北林华井田煤质参数特征及其成煤沉积环境意义[J].煤炭科学技术,2017,45(10):162-168.
[18]姜云辉,杨万志,程遂欣.新疆煤类分布、变质规律及变质作用分析[J].新疆地质,2008,32(3):301-304.
[19]方婷,解国爱,王博,等.淮北煤田构造特征和形成机制[J].煤田地质与勘探,2017,45(3):1-6.
[20]徐德金,胡宝林,胡巍.淮北煤田卧龙煤矿岩浆侵入煤层的构造控制[J].煤田地质与勘探,2011,39(5):1-5.
[21]李文前.豫东地区岩浆活动对煤层结构及煤质的影响[J].煤田地质与勘探,2014,42(6):8-13.
[2]解国爱,董承杰,李凤荣,等.淮北煤田孙疃煤矿构造特征及其演化[J].中国煤炭地质,2015,27(3):1-5.
[3]刘大锰,姚艳斌,蔡益栋,等.华北石炭—二叠系煤的孔渗特征及主控因素[J].现代地质,2010,24(6):1198-1203.
[4]黄文辉.淮北煤田上石盒子组层序特征及煤层气评价[J].中国煤炭地质(原中国煤田地质),1999,11(1):39-41.
[5]刘丙祥,刘桂建,姜波,等.淮北煤田刘店井田含煤岩系沉积特征及主煤层对比研究[J].中国煤炭地质,2009,21(9):7-10.
[6]陈新蔚,庄新国,周继兵,等.准东煤田煤质特征及分布规律[J].新疆地质,2013,31(1):89-93.
[7]张冀,韦波,田继军,等.新疆哈密三塘湖特大整装煤田中—下侏罗统煤层煤质及煤相特征[J].地质学报,2015,89(5):917-930.
[8]张贝贝,薛彦东,黄成玉.不同变质程度煤的发热量与水分和灰分的多元线性回归分析[J].煤田地质与勘探,2014,42(4):8-10.
[9]Li Guo,Ming Zhai,Zhentong Wang,Yu,et. al. Comprehensive coal quality index for evaluation of coal agglomeration characteristics[J]. Fuel,2018,231.
[10]胡宝林.淮北煤田下石盒子组七煤段沉积模式与聚煤特征[J].中国煤炭地质(原中国煤田地质),1996,21(2):23-25.
[11]Ding Dianshi,Liu Guijian,Fu Biao,et. al. Characteristics of the coal quality and elemental geochemistry in Permian coals from the Xinjier mine in the Huainan Coalfield,north China:Influence of terrigenous inputs[J]. Journal of Geochemical Exploration,2018,186.
[12]张翔,田景春,曹桐生.等.南华北盆地中二叠统“石盒子组”岩相古地理及储、盖特征研究[J].地层学杂志,2011,35(4):431-439.
[13]宋立军,李增学,吴冲龙,等.安徽淮北煤田二叠系沉积环境与聚煤规律分析[J].煤田地质与勘探,2004,42(5):1-3.
[14]程伟,杨瑞东,崔玉朝,等.贵州毕节地区晚二叠世煤质特征及其成煤环境意义[J].地质学报,2013,87(11):1763-1777.
[15]赵仁乐.基于煤岩煤质特征的成煤环境分析———以鲁西汶宁煤田新驿煤矿为例[J].中国煤炭地质,2017,29(6):14-19.
[16]刘志飞,魏迎春,贾煦,等.马家滩矿区延安组层序–古地理对煤岩煤质的控制[J].煤田地质与勘探,2018,46(3):28-33.
[17]王胜建,高为,郭天旭,等.黔北林华井田煤质参数特征及其成煤沉积环境意义[J].煤炭科学技术,2017,45(10):162-168.
[18]姜云辉,杨万志,程遂欣.新疆煤类分布、变质规律及变质作用分析[J].新疆地质,2008,32(3):301-304.
[19]方婷,解国爱,王博,等.淮北煤田构造特征和形成机制[J].煤田地质与勘探,2017,45(3):1-6.
[20]徐德金,胡宝林,胡巍.淮北煤田卧龙煤矿岩浆侵入煤层的构造控制[J].煤田地质与勘探,2011,39(5):1-5.
[21]李文前.豫东地区岩浆活动对煤层结构及煤质的影响[J].煤田地质与勘探,2014,42(6):8-13.
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