淮北孙疃煤矿下石盒子组主采煤层沉积环境与聚煤特征
|
摘要
下石盒子组煤层作为淮北孙疃煤矿主要的开采对象,其煤层变化受沉积环境影响较大。根据钻孔岩心、测井、矿井地质、岩石薄片等资料,分析研究区下石盒子组主采煤层含煤岩段的沉积环境,并对聚煤特征进行研究。结果表明研究区下石盒子组主要形成于浅水三角洲平原沉积环境,受海水与河流的共同作用,发育有分流河道、分流间湾、天然堤、泛滥盆地、泥炭沼泽等沉积微相。其中分流河道废弃阶段以及分流间湾的聚煤作用较好,为下石盒子组主要的聚煤环境。
As a main exploitation object,Xiashihezi Formation coal seam variation in the Suntuan coalmine has subjected impact from sedimentary environment greatly. Based on borehole core,well logging,coalmine geological and rock thin section data,have analyzed Xiashihezi Formation main mineable coal seam coal-bearing sector sedimentary environment and coal accumulation features. The result has shown that in the study area,Xiashihezi Formation had been formed in a shallow water delta plain,subjected interaction from both sea water and rivers,developed microfacies of distributary channels,interdistributory bay,levee,flood basin and peat bog etc. In which,during the distributary channel abandonment stage and in interdistributory bay have better coal accumulation,thus the main coal accumulation environment during the Xiashihezi age.
As a main exploitation object,Xiashihezi Formation coal seam variation in the Suntuan coalmine has subjected impact from sedimentary environment greatly. Based on borehole core,well logging,coalmine geological and rock thin section data,have analyzed Xiashihezi Formation main mineable coal seam coal-bearing sector sedimentary environment and coal accumulation features. The result has shown that in the study area,Xiashihezi Formation had been formed in a shallow water delta plain,subjected interaction from both sea water and rivers,developed microfacies of distributary channels,interdistributory bay,levee,flood basin and peat bog etc. In which,during the distributary channel abandonment stage and in interdistributory bay have better coal accumulation,thus the main coal accumulation environment during the Xiashihezi age.
引文
[1]Shao L Y,Zhang P F,Gayer R A,et al. Coal in a carbonate sequence stratigraphic framework:the Upper Permian Heshan Formation in central Guangxi,southern China[J]. Journal of the Geological Society,2003,160(2):285-298.
[2]Shearer J C,Staub J R,Moore T A. The Conundrum of Coal Bed Thickness:A Theory for Stacked Mire Sequences[J]. Journal of Geology,1994,102(5):611-617.
[3]陈世悦,刘焕杰.华北石炭二叠纪层序地层学研究的特点[J].岩相古地理,1994,(5):11-20.
[4]德勒恰提,王威,王利.粒度分析在吉木萨尔凹陷梧桐沟组沉积相研究中的应用[J].新疆大学学报(自然科学版),2012,29(2):142-149.
[5]郭彪,邵龙义,马施民,等.海拉尔盆地群下白垩统层序格架内聚煤特征与成煤模式[J].煤田地质与勘探,2017,45(1):18-23.
[6]胡斌,尚永国,牛永斌,等.河南省晚古生代煤系层序地层格架与沉积演化[J].煤田地质与勘探,2012,40(2):4-8,11.
[7]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,(2):23-25,74.
[8]蓝昌益,杨本才,彭甦萍.淮南煤田二叠纪含煤岩系主要煤层的成煤环境[J].煤炭学报,1988,(1):11-22.
[9]李运山,魏尔林.淮北煤田芦岭井田二叠纪含煤岩系原生沉积构造序列与沉积环境[J].安徽地质,2002,(1):29-34.
[10]李增学,何玉平,刘海燕,等.琼东南盆地崖城组煤的沉积学特征与聚煤模式[J].石油学报,2010,31(4):542-547.
[11]邵龙义,肖正辉,何志平,等.晋东南沁水盆地石炭二叠纪含煤岩系古地理及聚煤作用研究[J].古地理学报,2006,8(1):43-52.
[12]宋立军,李增学,吴冲龙,梁雄兵.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,(05):1-3.
[13]桑树勋,陈世悦,刘焕杰.华北晚古生代成煤环境与成煤模式多样性研究[J].地质科学,2001,(2):212-221.
[14]施振生,金惠,郭长敏,等.四川盆地上三叠统须二段测井沉积相研究.天然气地球科学,2008,19(3):339-346.
[15]索荣辉.淮北青东井田早二叠世浅水三角洲沉积特征及模式研究[J].平顶山学院学报,2017,32(2):53-61.
[16]王保玉,胡斌,白建平,等.山西沁水盆地东南部上石炭统—下二叠统太原组聚煤环境[J].古地理学报,2015,17(5):105-116.
[17]谢长仑,胡宝林,徐宏杰,等.淮南煤田石炭-二叠系泥页岩层系分布与沉积环境分析[J].中国煤炭地质,2015,27(5):14-19.
[18]于兴河,王德发,郑浚茂.华北地区二叠系岩相组合类型、剖面特点及沉积体系[J].沉积学报,1992,(1):27-35.
[19]周倩羽,邵龙义,陈照雄,等.四川华蓥山北段上三叠统须家河组沉积环境及聚煤特征[J].煤炭学报,2016,41(3):703-711.
[20]张廷山,何映颉,伍坤宇,等.筠连地区上二叠统宣威组沉积相及聚煤控制因素[J].岩性油气藏,2017,29(1):3-12.
[2]Shearer J C,Staub J R,Moore T A. The Conundrum of Coal Bed Thickness:A Theory for Stacked Mire Sequences[J]. Journal of Geology,1994,102(5):611-617.
[3]陈世悦,刘焕杰.华北石炭二叠纪层序地层学研究的特点[J].岩相古地理,1994,(5):11-20.
[4]德勒恰提,王威,王利.粒度分析在吉木萨尔凹陷梧桐沟组沉积相研究中的应用[J].新疆大学学报(自然科学版),2012,29(2):142-149.
[5]郭彪,邵龙义,马施民,等.海拉尔盆地群下白垩统层序格架内聚煤特征与成煤模式[J].煤田地质与勘探,2017,45(1):18-23.
[6]胡斌,尚永国,牛永斌,等.河南省晚古生代煤系层序地层格架与沉积演化[J].煤田地质与勘探,2012,40(2):4-8,11.
[7]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,(2):23-25,74.
[8]蓝昌益,杨本才,彭甦萍.淮南煤田二叠纪含煤岩系主要煤层的成煤环境[J].煤炭学报,1988,(1):11-22.
[9]李运山,魏尔林.淮北煤田芦岭井田二叠纪含煤岩系原生沉积构造序列与沉积环境[J].安徽地质,2002,(1):29-34.
[10]李增学,何玉平,刘海燕,等.琼东南盆地崖城组煤的沉积学特征与聚煤模式[J].石油学报,2010,31(4):542-547.
[11]邵龙义,肖正辉,何志平,等.晋东南沁水盆地石炭二叠纪含煤岩系古地理及聚煤作用研究[J].古地理学报,2006,8(1):43-52.
[12]宋立军,李增学,吴冲龙,梁雄兵.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,(05):1-3.
[13]桑树勋,陈世悦,刘焕杰.华北晚古生代成煤环境与成煤模式多样性研究[J].地质科学,2001,(2):212-221.
[14]施振生,金惠,郭长敏,等.四川盆地上三叠统须二段测井沉积相研究.天然气地球科学,2008,19(3):339-346.
[15]索荣辉.淮北青东井田早二叠世浅水三角洲沉积特征及模式研究[J].平顶山学院学报,2017,32(2):53-61.
[16]王保玉,胡斌,白建平,等.山西沁水盆地东南部上石炭统—下二叠统太原组聚煤环境[J].古地理学报,2015,17(5):105-116.
[17]谢长仑,胡宝林,徐宏杰,等.淮南煤田石炭-二叠系泥页岩层系分布与沉积环境分析[J].中国煤炭地质,2015,27(5):14-19.
[18]于兴河,王德发,郑浚茂.华北地区二叠系岩相组合类型、剖面特点及沉积体系[J].沉积学报,1992,(1):27-35.
[19]周倩羽,邵龙义,陈照雄,等.四川华蓥山北段上三叠统须家河组沉积环境及聚煤特征[J].煤炭学报,2016,41(3):703-711.
[20]张廷山,何映颉,伍坤宇,等.筠连地区上二叠统宣威组沉积相及聚煤控制因素[J].岩性油气藏,2017,29(1):3-12.