松藻矿区原生结构煤与构造煤物性差异研究
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摘要
为了研究重庆松藻矿区原生结构煤与构造煤的物性差异,采用压汞法、等温吸附实验等研究了不同煤体结构煤物性差异。结果表明:随着煤破坏程度增加,真密度、孔隙度、水分M_(ad)、灰分A_d、挥发分V_d均呈先减小后增大趋势,碎裂煤最小;构造作用对煤的不同孔径容积均有影响,总孔容呈降低趋势,但均以微孔为主;原生结构煤以开放孔为主,连通性好;构造煤存在半封闭孔隙(墨水瓶孔),连通性差;与原生结构煤和碎粒煤相比,碎裂煤吸附量较低。
In order to study differences in physical properties between the primary structural coal and the structural coal in Chongqing Songzao mining area, mercury physical properties and isothermal adsorption experiments are used to study on characteristic differences in coal physical properties of different coal structures. The results show that the true density, porosity, moisture M_(ad), ash A_d and volatile matter V_d decrease first and then increase with the increase of coal damage degree, and the fragmentation coal is the minimum; the tectonic action has different pore volume for coal. Influencing,the total pore volume showed a decreasing trend, but all were micropores; the primary structural coal was open pores with good connectivity; the structural coal had semi-closed pores(inkwell holes) and poor connectivity; and the primary structural coal and compared with grinded coal, the adsorption capacity of fragmented coal is lower.
In order to study differences in physical properties between the primary structural coal and the structural coal in Chongqing Songzao mining area, mercury physical properties and isothermal adsorption experiments are used to study on characteristic differences in coal physical properties of different coal structures. The results show that the true density, porosity, moisture M_(ad), ash A_d and volatile matter V_d decrease first and then increase with the increase of coal damage degree, and the fragmentation coal is the minimum; the tectonic action has different pore volume for coal. Influencing,the total pore volume showed a decreasing trend, but all were micropores; the primary structural coal was open pores with good connectivity; the structural coal had semi-closed pores(inkwell holes) and poor connectivity; and the primary structural coal and compared with grinded coal, the adsorption capacity of fragmented coal is lower.
引文
[1]王建涛,郭德涛,刘炎杰.原生结构煤与共生的构造煤物性差异[J].煤炭技术,2015,34(8):113-115.
[2]王向浩,王延斌,高莎莎,等.构造煤与原生结构煤的孔隙结构及吸附性差异[J].高校地质学报,2012,18(3):528-532.
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[4]张妙逢,贾茜.构造变形对煤储层孔隙结构与比表面积的影响研究[J].中国煤炭地质,2013,25(7):1-4,64
[5]秦勇,徐志伟,张井.高煤级煤孔径结构的自然分类及其应用[J].煤炭学报,1995(3):266-270.
[6]戚灵灵,王兆丰,杨宏民,等.基于低温氮吸附法和压汞法的煤样孔隙研究[J].煤炭科学技术,2012,40(8):36-39,87.
[7]向晓军,程军,蒙丽,等.重庆市晚二叠世含煤地层聚煤特征[J].中国煤炭地质,2011,23(8):38-42.
[8]李恒乐,曹运兴,秦勇,等.重庆煤矿区瓦斯赋存特征及地质控制因素[J].煤田地质与勘探,2015,43(2):1-7,12.
[9]张晓东,秦勇,桑树勋.煤储层吸附特征研究现状及展望[J].中国煤田地质,2005(1):16-21.
[10]姜波,琚宜文.构造煤结构及其储层物性特征[J].天然气工业,2004(5):27-29,146.
[2]王向浩,王延斌,高莎莎,等.构造煤与原生结构煤的孔隙结构及吸附性差异[J].高校地质学报,2012,18(3):528-532.
[3]屈争辉.构造煤结构及其对瓦斯特性的控制机理研究[D].徐州:中国矿业大学,2010.
[4]张妙逢,贾茜.构造变形对煤储层孔隙结构与比表面积的影响研究[J].中国煤炭地质,2013,25(7):1-4,64
[5]秦勇,徐志伟,张井.高煤级煤孔径结构的自然分类及其应用[J].煤炭学报,1995(3):266-270.
[6]戚灵灵,王兆丰,杨宏民,等.基于低温氮吸附法和压汞法的煤样孔隙研究[J].煤炭科学技术,2012,40(8):36-39,87.
[7]向晓军,程军,蒙丽,等.重庆市晚二叠世含煤地层聚煤特征[J].中国煤炭地质,2011,23(8):38-42.
[8]李恒乐,曹运兴,秦勇,等.重庆煤矿区瓦斯赋存特征及地质控制因素[J].煤田地质与勘探,2015,43(2):1-7,12.
[9]张晓东,秦勇,桑树勋.煤储层吸附特征研究现状及展望[J].中国煤田地质,2005(1):16-21.
[10]姜波,琚宜文.构造煤结构及其储层物性特征[J].天然气工业,2004(5):27-29,146.