Analysis of coal formation environment in the south of Huoxi Coalfield based on coal quality characteristics

CHEN Yan

doi:10.19948/j.12-1471/P.2023.03.03

2023 Vol. 46, No. 3

Article Contents

Article navigation > North China Geology > 2023 > 46(3): 21-27

Next Article Previous Article

CHEN Yan. 2023. Analysis of coal formation environment in the south of Huoxi Coalfield based on coal quality characteristics. North China Geology, 46(3): 21-27. doi: 10.19948/j.12-1471/P.2023.03.03

Citation:

CHEN Yan. 2023. Analysis of coal formation environment in the south of Huoxi Coalfield based on coal quality characteristics. North China Geology, 46(3): 21-27. doi: 10.19948/j.12-1471/P.2023.03.03

Analysis of coal formation environment in the south of Huoxi Coalfield based on coal quality characteristics

CHEN Yan

Shanxi Coal Geological Resources and Environment Investigation Institute Co.LTD, Taiyuan 030006, China

Received Date: 16 September 2022

Abstract

Abstract

The Huoxi coalfield is an important coking coal producing area in China. In order to fully identify its coal quality characteristics and coal-forming environment, this paper chooses No.2 and 9 (9+10) coal seams which are representative in southern coalfield to research. By analyzing the data of coal rock, sulfur content, ash content and ash composition of coal samples, the coal quality characteristics were evaluated and the coal forming environment was inferred.The results show that the higher the mirror laziness ratio of coal seam is, the deeper the sedimentary environment is covered by water. The higher the sulfur content is, the more affected by sea water; The higher the ash content is, the stronger the hydrodynamic force is.The larger the grey component index K is, the stronger the reduction is. The higher the CaO/MgO value is, the wetter the coal-forming climate is. The m value reflects whether the sedimentary environment is fresh or salt water.According to the characteristics of No.2 and No.9(9+10)coal ash with low to medium and low ash composition index and 1< m< 10, it is inferred that their formation process was influenced by river transport, and they were depositional environments with strong hydrodynamics, reduced form and brackish water. By analyzing other coal quality characteristics of the two coal layers, it is found that there are differences in the coal-forming environment between the two coal layers, as follows:No.2 coal has the characteristics of low vitreous inert ratio(V/I), low sulfur content and high CaO/MgO value, indicating that the coal-forming environment is a deltaic plain peat swamp environment with low overlying water and humid paleoclimate environment. No. 9 (9+10) coal has the characteristics of moderately high mirror inert ratio(V/I), high sulfur content and high CaO/MgO value, indicating that the coal formation environment is a lagoon peat swamp environment with strong water cover, seawater influence and extremely humid paleoclimate environment.
- the south of Huoxi Coalfield /
- No.2 coal /
- No.9(9+10)coal /
- coal quality characteristics /
- coal formation environment

FullText(HTML)

References

[1]	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. Google Scholar
[2]	张有河,王晓明,刘东娜.准格尔煤田西南部6 上煤层煤岩煤质及沉积环境特征[J].中国煤炭,2015,(2):35-39. Google Scholar
[3]	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. Google Scholar
[4]	赵师庆,王飞宇,董名山.论“论沉积环境-成煤类型-煤质特征”概略成因模型[J].沉积学报,1994,12(1):32-39. Google Scholar
[5]	郝吉生,葛宝勋,谢洪波.“灰成分端元分析法”及其在聚煤环境分析中的应用[J].沉积学报,2000,18(3):460-464. Google Scholar
[6]	郑媛媛,张博文,王猛,等.潘吉塔格煤矿中-下侏罗统煤岩煤质特征及成煤环境分析[J].新疆地质,2020,38(3):388-394. Google Scholar
[7]	黄操明,周绮峰.霍县矿区石炭二叠纪含煤岩系沉积环境探讨[J].沉积学报,1988,(4):72-80. Google Scholar
[8]	宋新民.山西霍西煤田北部含煤地层的成煤环境和成煤模式探讨[M].徐州:中国矿业大学出版社,1988. Google Scholar
[9]	马宏英.山西霍西煤田白壁关-宜兴-曹村勘探区石炭二叠纪含煤建造沉积环境及煤层赋存规律[M].徐州:中国矿业大学出版社,1988. Google Scholar
[10]	山西省煤炭地质资源环境调查院,山西省霍西煤田襄汾县曹家庄勘查区煤炭普查地质报告[R].太原:山西省煤炭地质资源环境调查院.2020. Google Scholar
[11]	山西省煤炭地质资源环境调查院,山西省霍西煤田襄汾县大邓勘查区煤炭普查地质报告[R].太原:山西省煤炭地质资源环境调查院.2017. Google Scholar
[12]	山西省煤炭地质资源环境调查院,山西省霍西煤田襄汾县上毛勘查区煤炭普查地质报告[R].太原:山西省煤炭地质资源环境调查院.2012. Google Scholar
[13]	山西省煤炭地质局.山西省煤炭资源潜力评价[M].北京:煤炭工业出版社,2017. Google Scholar
[14]	宋文龙.山西省绿色煤炭资源评价与分布特征研究[J].中国矿业,2021,30(8):62-68. Google Scholar
[15]	魏迎春,贾煦,刘志飞,等.鸳鸯湖矿区延安组煤岩煤质特征及成煤环境研究[J].煤炭科学技术,2018,46(7):197-204. Google Scholar
[16]	王胜建,高为,郭天旭,等.黔北林华井田煤质特征及其沉积环境意义[J].煤炭科学技术,2017,45(10):162-168. Google Scholar
[17]	赵霞,幕熙玮.贵州省晚二叠世高硫煤资源及洁净利用[M].徐州:中国矿业大学出版社,2019. Google Scholar
[18]	荣伟.贵州红砖煤矿煤质特征及成煤沉积环境[J].现代矿业,2021,37(2):15-21. Google Scholar
[19]	韩钖周.贵州煤层中硫分的分布特征[J]贵州煤炭,1987,2:1-15. Google Scholar
[20]	谢涛,张光超,乔军伟.陕北及黄陇侏罗纪煤田煤中硫分、灰分成因探讨[J].中国煤炭地质,2012,24(6):11-14. Google Scholar
[21]	雒昆利,王五一,姚改焕,等.韩城矿区石炭-二叠系煤的含硫量和硫的成因[J].西安科技学院学报,2000,20(4):289-292. Google Scholar
[22]	濮英英,雷加锦,王运泉.聚煤环境对煤岩中形态硫赋存的影响[J].岩石学报,1995,11(4):462-470. Google Scholar
[23]	汤达祯,杨起,周春光,等.华北晚古生代成煤沼泽微环境与硫的成因关系研究[J].中国科学(D 辑),2000,30(6):584-591. Google Scholar
[24]	刘善德.永陇矿区南缘煤岩煤质特征及成煤环境分析[J].煤田地质与勘探,2018,46(S1):11-15. Google Scholar
[25]	张双全.煤化学[M].徐州:中国矿业大学出版社,2004:175-221. Google Scholar
[26]	汪洋,刘志成,李隆富.黔北煤田晚二叠世煤层含硫特征与沉积环境研究[J].煤炭科学技术,2017,45(2):185-190. Google Scholar
[27]	叶道敏,罗俊文,肖文昭,等.中国西南地区煤岩显微组分性质成分及其应用[M].北京:地质出版社,1997:20. Google Scholar
[28]	王善博,杨君,李建国,等.鄂尔多斯盆地西缘宁东地区侏罗系含铀地层元素地球化学特征[J].煤田地质与勘探,2018,46(6):19-25+32. Google Scholar