矿业科学学报2025，Vol.10Issue(5)：848-858,11.DOI:10.19606/j.cnki.jmst.2025066
基于AFM表征技术的烟煤表面微观力学特性研究
Study on micro-mechanical properties of bituminous coal surface based on AFM characterization technology
摘要
Abstract
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.关键词
原子力显微镜/微观形貌/模量/黏附力Key words
atomic force microscope/microstructure/modulus/adhesion分类
矿山工程引用本文复制引用
赵丹,秦枫,聂百胜,马昕钰,朱熹阳,何学秋,柳先锋,刘鹏,赵训,王孟霞..基于AFM表征技术的烟煤表面微观力学特性研究[J].矿业科学学报,2025,10(5):848-858,11.基金项目
国家自然科学基金(52274173) （52274173）
国家重点研发计划(2024YFC3013804) （2024YFC3013804）
贵州省科技支撑计划(黔科合支撑[2023]一般360) （黔科合支撑[2023]一般360）
