文献类型：期刊文献

中文题名：岩石矿物成分与宏微观摩擦特性关联性研究

英文题名：Study on the correlation between rock's mineral compositions and macro-micro friction properties

作者：黄曼[1,2];逯梦怡[1,2];吴月伟[1,2];刘丹[3];张贺[1,2];何智海[1,2]

机构：[1]绍兴文理学院土木工程学院,浙江绍兴312000;[2]绍兴文理学院浙江省岩石力学与地质灾害重点实验室,浙江绍兴312000;[3]中国矿业大学(北京)隧道工程灾变防控与智能建养全国重点实验室,北京100083

年份：2025

卷号：44

期号：4

起止页码：827

中文期刊名：岩石力学与工程学报

外文期刊名：Chinese Journal of Rock Mechanics and Engineering

收录：北大核心2023、、EI(收录号：20251418172942)、北大核心

基金：国家自然科学基金资助项目(42272333)。

语种：中文

中文关键词：岩石力学;矿物成分;宏微观;摩擦特性;纳米划痕;界面

外文关键词：rock mechanics;mineral compositions;macro-micro;friction properties;nano-scratch;interface

中文摘要：矿物成分是影响岩石宏微观摩擦力学特性的重要因素。基于直剪试验和纳米划痕试验开展砂岩宏微观摩擦特性研究,结合X射线衍射分析剪切前后矿物成分的变化规律,统计得到岩石、不同矿物及界面的宏微观摩擦因数,并建立两者的摩擦关联机制。试验结果表明:硬相矿物占剪切后粉末总量的比例增加,软相矿物反之;硬相矿物的划痕深度和摩擦力较稳定,软相矿物的划痕深度和摩擦力变化幅度较大;统计分析摩擦因数频数分布曲线,发现各矿物及界面均呈现单峰值高斯分布。结合宏微观摩擦机制分析发现,砂岩的宏观摩擦力由表面微凸体和矿物间磨损决定,硬相矿物的摩擦力主要取决于其自身特性,软相矿物和界面的摩擦力受自身特性、塑性流动和周围矿物挤压作用的综合影响。进一步通过量化宏微观摩擦因数间的关系,得到硬相–软相界面对宏观摩擦因数的贡献率最大,其值为52.1%。上述宏微观摩擦特性研究结果可为揭示跨尺度摩擦力学机制提供一定的理论依据。

外文摘要：Mineral composition is an important factor affecting the macro-micro friction mechanical properties of rock.The macro-micro friction properties of sandstone are studied based on direct shear and nano-scratch tests,the variations of mineral compositions before and after shearing are analyzed using X-ray diffraction,the macro-micro friction coefficients of the rock,different minerals and their interfaces are statistically obtained,and the friction correlation mechanism between these factors is established.The results show that the proportion of hard-phase minerals in the total amount of powder increases after shearing,the proportion of soft-phase minerals decreases.The scratch depth and friction force of hard-phase minerals remain stable,those of soft-phase minerals vary significantly.Statistical analysis of the frequency distribution curve of the friction coefficient reveals that each mineral and interface exhibit a single-peak Gaussian distribution.Combined with the analysis of macro-micro friction mechanisms,it is found that the macro friction force of sandstone is influenced by surface asperities and the wear between different minerals,the friction force of hard-phase minerals primarily depends on their inherent properties,the friction force of soft-phase minerals and interfaces is affected by their inherent properties,plastic flow and the extrusion of surrounding minerals.By further quantifying the relationship between macro-micro friction coefficients,the hard-soft phase interface is found to contribute the most to the macro friction coefficient,accounting for 52.1%.The research results of the macro-micro friction properties can provide a theoretical foundation for revealing the mechanism of cross-scale friction mechanics.