文献类型：期刊文献

中文题名：基于AFM表征技术的烟煤表面微观力学特性研究

英文题名：Study on micro-mechanical properties of bituminous coal surface based on AFM characterization technology

作者：赵丹 聂百胜 马昕钰 朱熹阳 何学秋 柳先锋 刘鹏 赵训 王孟霞 秦枫

第一作者：赵丹

机构：[1]中国矿业大学(北京)煤炭精细勘探与智能开发全国重点实验室,北京100083;[2]重庆大学煤矿灾害动力学与控制全国重点实验室,重庆400044;[3]中国矿业大学(北京)应急管理与安全工程学院,北京100083;[4]北京科技大学土木与资源工程学院,北京100083;[5]贵州理工学院矿业工程学院,贵州贵阳550025;[6]贵州省矿山安全科学研究院有限公司,贵州贵阳550025

第一机构：中国矿业大学(北京)煤炭精细勘探与智能开发全国重点实验室,北京100083

年份：2025

卷号：10

期号：5

起止页码：848-858

中文期刊名：矿业科学学报

外文期刊名：Journal of Mining Science and Technology

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金(52274173);国家重点研发计划(2024YFC3013804);贵州省科技支撑计划(黔科合支撑〔2023〕一般360)。

语种：中文

中文关键词：原子力显微镜;微观形貌;模量;黏附力

外文关键词：atomic force microscope;microstructure;modulus;adhesion

摘要：为进一步研究不同煤体微观结构及力学性质的差异性,采用原子力显微镜(AFM)内置PF-QNM模式对4种不同煤样微表面进行扫描。结果表明:不同煤样间微观形貌及力学性质存在较大差异,随变质程度增加,煤体模量均值呈线性增加,煤体微观表面波峰数量也增加,可提供更多的气体吸附点位;煤体表面黏附力与变质程度呈“倒U”型分布关系,中阶煤表面黏附力均值较大;微表面粗糙度的增加会加大煤样与物质的真实接触面积,从而提升黏附力;裂纹的产生虽会增加粗糙度,但会降低微表面黏附力。
As a natural porous medium,coal has strong heterogeneity in its microstructure.To further study the differences in microstructure and mechanical properties of different coal bodies,four coal samples with different geological conditions in different mining areas were selected.Atomic force mi-croscopy(AFM)with built-in PF-QNM mode was used to scan the micro surfaces of different coal sam-ples.The results showed that there were significant differences in the micro morphology and mechanical properties between different coal samples.As the degree of metamorphism increased,the number of peaks on the micro surface of coal increased,providing more adsorption sites for gas adsorption.The average modulus of coal increases linearly with the degree of metamorphism.The surface adhesion force of coal shows an inverted U-shaped distribution with the degree of metamorphism,and the average sur-face adhesion force of medium rank coal is relatively high.The increase in micro surface roughness will increase the actual contact area between coal samples and substances,leading to an increase in adhe-sion force,while the generation of cracks will increase roughness but reduce micro surface adhesion force.