Volume 48 Issue 2
Apr.  2020
Turn off MathJax
Article Contents
Abstract
References
Related Articles
MA Hongtao, SONG Xiaoxia, LI Kaijie, ZHAO Jingui, ZHANG Tianguang, LIU Jianping. Changes of petrographic characteristics and quality of contact-metamorphosed coals in the Datong coalfield[J]. COAL GEOLOGY & EXPLORATION, 2020, 48(2): 99-105. DOI: 10.3969/j.issn.1001-1986.2020.02.016
Citation: MA Hongtao, SONG Xiaoxia, LI Kaijie, ZHAO Jingui, ZHANG Tianguang, LIU Jianping. Changes of petrographic characteristics and quality of contact-metamorphosed coals in the Datong coalfield[J]. COAL GEOLOGY & EXPLORATION, 2020, 48(2): 99-105. DOI: 10.3969/j.issn.1001-1986.2020.02.016
shu

Changes of petrographic characteristics and quality of contact-metamorphosed coals in the Datong coalfield

  • 1. College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China;

  • 2. Shanxi Key Laboratory of Coal and Coal Measure Gas Geology, Taiyuan 030024, China;

  • 3. Tongmei Datang Tashan Coal Mine Co. Ltd., Datong 037000, China;

  • 4. 115 Coal Geological Exploration Institute of Shanxi Province, Datong 037003, China

Funds: 

National Natural Science Foundation of China(41802191)

More Information
  • Received Date: October 27, 2019
  • Revised Date: December 10, 2019
  • Published Date: April 24, 2020
    Graphical Abstract
    • Abstract
  • Igneous intrusions in the Datong coalfield caused a considerable amount of contact metamorphosed coal, reducing the industrial value of coal. The effect of a dike in roadway 5222 in Tashan coal mine was determined from analysis of 16 samples collected near the intrusive body. Microscopic and macroscopic observation, proximate and ultimate analysis were used to determine the petrographic characteristics. The results demonstrate that contact-metamorphosed coal experienced significant thermal alteration during intrusive event. Microscopically, various natural coke microstructures, such as mosaic structure, flow structure and pyrolytic carbon were formed under excess heat; instant heating for coals resulted in the elevation of coal ranks, the maximum reflectance of vitrinite increased from 0.67%-0.87% of the normal coal to 0.94%-3.67% of the contact metamorphosed coal; In the contact-metamorphosed coal, the moisture content and the ash yields increased remarkably and volatile yield decreased; In coal samples near dikes, C content increases, H, N and O content decreases. From the comprehensive analysis, it was inferred that the influencing range of the contact metamorphism of the dikes for coal seams is within 4.5 m, 1.25 times of the dike thickness, 1.6 m in a severely metamorphosed zone. The research results provided the basis for assessment of coal mining and utilization.
    • FullText(HTML)
    • References (34)
  • [1]
    GOODARZI F,GENTZIS T,JACKSON G,et al. Optical characteristics of heat-affected bitumens from the Nanisivik mine,N.W. Baffin Island,Arctic Canada[J]. Energy Sources,1993,15(2):359-376.
    [2]
    郭国鹏. 接触变质带煤的物理化学结构及瓦斯赋存特征研究[D]. 焦作:河南理工大学,2012.

    GUO Guopeng. Research on physical and chemical structure of coal and characteristics of gas occurrence in contact metamorphic zone[D]. Jiaozuo:Henan Polytechnic University,2012.
    [3]
    李久庆. 永安超无烟煤显微组分及其光性演化[D]. 徐州:中国矿业大学,2019. LI Jiuqing. Composition and optical property evolution of macerals in meta-anthracite from Yongan,Fujian,China[D]. Xuzhou:China University of Mining and Technology,2019.
    [4]
    KARAYIGIT A I,WHATELEY M K G. Properties of a lacustrine subbituminous(k1) seam,with special reference to the contact metamorphism,Soma-Turkey[J]. International Journal of Coal Geology,1997,34(1):131-155.
    [5]
    SINGH A K,SINGH M P,SHARMA M,et al. Microstructures and microtextures of natural cokes:A case study of heat-affected coking coals from the Jharia coalfield,India[J]. International Journal of Coal Geology,2007,71(2/3):153-175.
    [6]
    WARD C R,WARBROOKE P R,ROBERTS F I. Geochemical and mineralogical changes in a coal seam due to contact metamorphism,Sydney basin,New South Wales,Australia[J]. International Journal of Coal Geology,1989,11(2):105-125.
    [7]
    苗琦,权巨涛,秦云虎,等. 天然焦地质勘查研究[J]. 中国煤炭地质,2019,31(6):9-14.

    MIAO Qi,QUAN Jutao,QIN Yunhu,et al. Study on geological exploration for natural coke[J]. Coal Geology of China,2019,31(6):9-14.
    [8]
    裴文春. 太原西山杨庄勘查区天然焦与煤的参数特征研究[J]. 中国煤炭地质,2018,30(4):17-21.

    PEI Wenchun. Natural coke and coal distinction parametric characteristics study in Yangzhuang exploration area,Xishan coalfield,Taiyuan[J]. Coal Geology of China,2018,30(4):17-21.
    [9]
    PADWYSOCKI M H,DUTCHER R R. Coal dikes that intrude lamprophyre sills;Purgatoire River Valley,Colorado[J]. Economic Geology,1971,66(2):267-280.
    [10]
    THORPE A N,SENFTLE F E,FINKELMAN R B,et al. Change in the magnetic properties of bituminous coal intruded by an igneous dike,Dutch Creek mine,Pitkin County,Colorado[J]. International Journal of Coal Geology,1998,36(3):243-258.
    [11]
    GHOSH T. A study of temperature conditions at igneous contacts with certain Permian coals of India[J]. Economic Geology,1967,62(1):109-117.
    [12]
    COOPER J R,CRELLING J C,RIMMER S M,et al. Coal metamorphism by igneous intrusion in the Raton basin,CO and NM:Implications for generation of volatiles[J]. International Journal of Coal Geology,2007,71(1):15-27.
    [13]
    JONES J M,CREANEY S. Optical character of thermally metamorphosed coals of northern England[J]. Journal of Microscopy,1977,109(1):105-118.
    [14]
    JIANG J Y,CHENG Y P,WANG L,et al. Petrographic and geochemical effects of sill intrusions on coal and their implications for gas outbursts in the Wolonghu mine,Huaibei coalfield,China[J]. International Journal of Coal Geology,2011,88(1):55-66.
    [15]
    YAO Yanbin,LIU Dameng. Effects of igneous intrusions on coal petrology,pore-fracture and coalbed methane characteristics in Hongyang,Handan and Huaibei coalfields,North China[J]. International Journal of Coal Geology,2012,96/97:72-81.
    [16]
    YAO Yanbin,LIU Dameng,HUANG Wenhui. Influences of igneous intrusions on coal rank,coal quality and adsorption capacity in Hongyang,Handan and Huaibei coalfields,North China[J]. International Journal of Coal Geology,2011,88(2/3):135-146.
    [17]
    STEWART A K,MASSEY M,PADGETT P L,et al. Influence of a basic intrusion on the vitrinite reflectance and chemistry of the Spring field(No.5) coal,Harrisburg,Illinois[J]. International Journal of Coal Geology,2005,63(1/2):58-67.
    [18]
    RODNOVA E. Change in collector attributes of sediments in contact zone of traps in central part of nosty Tungusskoy sineklize[J]. Tr Vsegei Leningard,1976,308:18-133.
    [19]
    YERMAKOV V I,SKOROBOGATOV V A. Oil and gas geology of west Siberian platform[J]. Petroleum Geology,1984,21(12):537-540.
    [20]
    GOLAB A N,CARR P F. Changes in geochemistry and mineralogy of thermally altered coal,Upper Hunter Valley,Australia[J]. International Journal of Coal Geology,2004,57(3/4):197-210.
    [21]
    GALUSHKIN Y I. Thermal effects of igneous intrusions on maturity of organic matter:A possible mechanism of intrusion[J]. Organic Geochemistry,1997,26(11/12):645-658.
    [22]
    王泰. 同忻井田煌斑岩侵入特征及对煤层和煤质的影响[J]. 煤田地质与勘探,2002,30(5):11-13.

    WANG Tai. Intrusive features and its influence of lamprophyre on coal seams and coal quality in Tongxin mine field[J]. Coal Geology & Exploration,2002,30(5):11-13.
    [23]
    张富强. 大同塔山井田煌斑岩侵入对煤层煤质的影响[J]. 山西煤炭,2007,27(2):17-20.

    ZHANG Fuqiang. Lamprophyre invasion's effects on coal seam and its qualities in Tashan coal-field of Datong mining district[J]. Shanxi Coal,2007,27(2):17-20.
    [24]
    GURBA L W,WARD C R. Elemental composition of coal macerals in relation to vitrinite reflectance,Gunnedah basin,Australia,as determined by electron microprobe analysis[J]. International Journal of Coal Geology,2000,44(2):127-147.
    [25]
    OTHMAN R,WARD C R. Thermal maturation pattern in the southern Bowen,northern Gunnedah and Surat basins,northern New South Wales,Australia[J]. International Journal of Coal Geology,2002,51(3):145-167.
    [26]
    E. 斯塔赫. 斯塔赫煤岩学教程[M]. 杨起等,译. 北京:煤炭工业出版社,1990:156-164.

    STACH E. Textbook of coal petrology[M]. YANG Qi et al,Translated. Beijing:China Coal Industry Publishing House,1990:156-164.
    [27]
    TAYLOR G. Development of optical properties of coke during carbonization[J]. Fuel,1961,40(6):465-472.
    [28]
    BROOKS J D,TAYLOR G. The formation of some graphitizing carbons[J]. Chemistry Physics of Carbon,1968,4:243-286.
    [29]
    CRELLING J C,DUTCHER R R. A petrologic study of a thermally altered coal from the Purgatoire River Valley of Colorado[J]. Geological Society of America Bulletin,1968,79(10):1375.
    [30]
    KISCH H J. Carbonization of semi-anthracitic vitrinite by an analcime basanite sill[J]. Economic Geology,1966,61(6):1043-1063.
    [31]
    RIMMER S M,YOKSOULIAN L E,HOWER J C. Anatomy of an intruded coal,I:Effect of contact metamorphism on whole-coal geochemistry,Springfield(No.5)(Pennsylvanian) coal,Illinois basin[J]. International Journal of Coal Geology,2009,79(3):74-82.
    [32]
    SINGH A K,SHARMA M,SINGH M P. Genesis of natural cokes:Some Indian examples[J]. International Journal of Coal Geology,2008,75(1):40-48.
    [33]
    RAYMOND A C,MURCHISON D G. Organic maturation and its timing in a Carboniferous sequence in the central Midland Valley of Scotland:comparisons with northern England[J]. Fuel,1989,68(3):328-334.
    [34]
    BARKER C E,BONE Y,LEWAN M D. Fluid inclusion and vitrinite-reflectance geothermometry compared to heat-flow models of maximum paleotemperature next to dikes,western onshore Gippsland basin,Australia[J]. International Journal of Coal Geology,1998,37(1):73-111.
    • Related Articles

  • Related Articles

    [1]DU Fangpeng, LUO Zheng, QIAO Junwei, ZHAO Xiaochen, TAN Furong, LI Congcong, FAN Qi. Petrographic, quality characteristics and clean & efficient use of Jurassic coal in Ningdong coalfield[J]. COAL GEOLOGY & EXPLORATION, 2020, 48(2): 71-77. DOI: 10.3969/j.issn.1001-1986.2020.02.012
    [2]QU Xiaorong. Distribution characteristics of associated elements in Middle Jurassic coal in the north of Datong coalfield and their geological significance[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(1): 64-72. DOI: 10.3969/j.issn.1001-1986.2019.01.009
    [3]GUO Jingang. Innovation and breakthrough in sustainable development of old mining areas:Taking the mine construction of Carboniferous-Permian and Jurassic coalfield in Tashan as an example[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(3): 34-40. DOI: 10.3969/j.issn.1001-1986.2018.03.007
    [4]GUO Wanzhong, CHENG Yuehong, GAO Yuping, CHEN Zhenguo, ZHANG Zhengwei, WANG Cun. Structural characteristics and coal-bearing boundaries of Taiyuan Formation in Datong coalfield[J]. COAL GEOLOGY & EXPLORATION, 2015, 43(5): 1-7. DOI: 10.3969/j.issn.1001-1986.2015.05.001
    [5]WANG Shuili, LIANG Shaoxian. Geochemical characteristics of clay parting from Xiaoyu coal mine of Datong, Shanxi[J]. COAL GEOLOGY & EXPLORATION, 2011, 39(6): 6-10,15. DOI: 10.3969/j.issn.1001-1986.2011.06.002
    [6]LI Lan-ting, HOU Ji-xiang. Research on the application of wireless wave perspect in tunnel in Datong coalfield[J]. COAL GEOLOGY & EXPLORATION, 2001, 29(5): 52-55.
    [7]Gao Yuping. THE CHARACTERISTICS OF THE UNDERGROUND RADIO PENETRATION IN THE DATONG JURSSIC COALFIELD[J]. COAL GEOLOGY & EXPLORATION, 1998, 26(3): 66-69.
    [8]Song Yuping, Liu Tianfang, Chen Dexing, Jin Kuili. FREQUENCY DISPERSION AND AMPLITUDE DISTRIBUTION OF CHANNEL WAVE FOR JURASSIC COAL SEAMS IN DATONG COALFIELD[J]. COAL GEOLOGY & EXPLORATION, 1996, 24(6): 49-53.
    [9]Chang Jianglin, Gao Qiang. CHARACTERISTICS OF FLORA FROM THE DATONG FORMATION IN NINGWU COALFIELD,SHANXI[J]. COAL GEOLOGY & EXPLORATION, 1996, 24(1): 4-8.
    [10]Zhang zhenxi. THE ANTHROCOLOGY CHARACTERISTICS AND ITS GEOLOGIC SIGNIFCANCE OF THE THERMAL METAMORPHIC COAL IN DATONG COALFIELD[J]. COAL GEOLOGY & EXPLORATION, 1994, 22(S1): 62-64.

  • Cited by

    Periodical cited type(7)

    1. 卢杰林，傅雪海，康俊强，张宝鑫，程鸣. 不同变质作用类型的煤级梯度对比. 煤炭科学技术. 2024(12): 180-192 .
    2. 束振宇，徐祥，魏迎春，王安民，王路，刘志飞，陈高建，曹代勇. 不同类型接触变质煤大分子结构差异性研究. 煤炭科学技术. 2023(06): 147-157 .
    3. 田泽奇，王志勇，姚建国，郭旭，李鸿豆，郭文牧，石志祥，赵存良，刘帮军. 岩浆接触带高变质煤化学结构FTIR定量表征. 光谱学与光谱分析. 2023(09): 2747-2754 .
    4. 金永飞，张光，郭军，刘荫，闫浩. 硅化作用对煤低温氧化特性参数的影响规律. 煤矿安全. 2022(01): 31-36 .
    5. 樊江涛，唐跃刚，宋晓夏，王绍清，李瑞青，董敏. 接触变质作用对煤基石墨烯量子点的影响研究. 地质论评. 2022(06): 2277-2289 .
    6. 陈健，李洋，刘文中，江佩君，曾建，陈萍. 岩浆侵入对煤结构的影响评述. 煤炭科学技术. 2021(06): 170-178 .
    7. 祖海军，孙殿宇，任海青，李凯杰. 东周窑井田侵入岩发育特征. 煤炭技术. 2021(10): 68-72 .

    Other cited types(6)

Catalog

    Get Citation
    PDF
    XML

    Article Metrics

    Article views (142) PDF downloads (10) Cited by(13)
    Related

    Copyright of website design © Editorial Office of Coal Geology & Exploration 陕ICP备05001372号-6 陕公网安备 61019002002193号

    Address: Editorial Office of Coal Geology & Exploration, No.82 Jinye 1st Rd, High-Tech Zone, Xi'an City, Shaanxi, China

    Tel: 029-81778075 E-mail: ccrimtdzykt@vip.163.com

    Supported by: Beijing Renhe Information Technology Co., Ltd.  Baidu Analytics

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return