新景矿无烟煤纳米级孔隙结构特征的原子力显微镜研究

王晓东

新景矿无烟煤纳米级孔隙结构特征的原子力显微镜研究

王晓东

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- 发布日期: 2019-08-19

Study on Characteristics of Nano-pore Structure of Anthracite in Xinjing Coal Mine by Atomic Force Microscopic

WANG Xiaodong

摘要

摘要: 阳泉矿区新景矿3^#煤层为强突出煤层,为了认识3^#煤纳米级孔隙结构发育特征,在井田佛洼分区3215辅助进风巷掘进头处采集了3^#煤样品(XJ-3)。通过原子力显微镜(AFM)技术观察了XJ-3样品的形貌发育特征,并结合图像分析法,获得了该煤的表面粗糙度R_a和均方根粗糙度R_q。结果表明:新景矿3^#煤表面孔隙形状大多以椭圆形和梨形为主,次为圆形,含少量不规则长条形,孔隙之间的连通性一般,喉道多呈现出圆柱形;该煤的面孔率为5.74%,表面孔隙以微孔、小孔为主,中孔、大孔不甚发育;该煤的表面粗糙度R_a和均方根粗糙度R_q值分别为3.89和6.17,与同变质程度煤相比,该煤表面相对光谱,凹凸程度相对较弱。
- 原子力显微镜 /
- 纳米级 /
- 孔隙结构 /
- 无烟煤 /
- 新景井田
Abstract: The 3^#coal seam in Xinjing Mine of Yangquan Mining Area is a strong outburst coal seam. To understand the development characteristics of nano-scale pore structure of 3^#coal, this study collected 3^#coal samples (XJ-3) at the heading of 3215 auxiliary air inlet lane in Fowa sub-area of mine field. The morphology and development characteristics of XJ-3 sample were observed by atomic force microscope (AFM), and the surface roughness R_a and root mean square roughness R_q of the coal were obtained by image analysis. The results show that the surface pore shape of 3^#coal in Xinjing Mine is mostly oval and pear-shaped, and the secondary is round, with a small amount of irregular strip shape. The connectivity between pores is general, and the throat is mostly cylindrical. The face rate of this coal is 5.74%, surface pores are mainly micropores and small pores, and mesopores and macropores are not well developed. The surface roughness R_a and root mean square roughness R_q values of the coal are 3.89 and 6.17 respectively. Compared with the coal with the same metamorphic grade, the surface of the coal has relatively weak concavity and convexity.
- atomic force microscope (AFM) /
- nanoscale /
- pore structure /
- anthracite /
- Xinjing Coal Mine

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参考文献(13)

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新景矿无烟煤纳米级孔隙结构特征的原子力显微镜研究

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出版历程

Study on Characteristics of Nano-pore Structure of Anthracite in Xinjing Coal Mine by Atomic Force Microscopic

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