基于MIP和SEM的构造区煤系碳酸盐岩微观结构定量表征  

Quantitative characterization of microscopic structure of carbonate rocks from coal measures in tectonic zone based on MIP and SEM

作　　者：李魁 贾圆 韩艳龙 雷飞 林芳豪 汪添翼 陈伟[2] LI Kui;JIA Yuan;HAN Yanlong;LEI Fei;LIN Fanghao;WANG Tianyi;CHEN Wei(Shaanxi Chenghe Bailiang Xusheng Coal Co.,Ltd.,Weinan,Shaanxi 715300,China;Xi'an University of Science and Technology,Xi'an,Shaanxi 710054,China)

机构地区：[1]陕西澄合百良旭升煤炭有限责任公司,陕西省渭南市715300 [2]西安科技大学,陕西省西安市710054

出　　处：《中国煤炭》2025年第1期204-214,共11页China Coal

基　　金：国家自然科学基金项目(41807192)。

摘　　要：为了深入了解陕西澄合矿区百良旭升煤矿构造区碳酸盐岩的微观孔隙结构和分形特征,采用了压汞(MIP)和扫描电镜(SEM)试验技术,通过对不同深度碳酸盐岩样品进行MIP和SEM分析,并绘制了双log散点图,结合分形理论计算了碳酸盐岩样品的孔隙结构分形维数,并分析了其与孔隙度的相关性。研究结果表明,MIP能够提供碳酸盐岩样品孔隙大小的分布信息,但是无法直接揭示孔隙形态的复杂性;SEM孔隙提取技术能够提供碳酸盐岩样品孔隙形态的高分辨率图像,从而有效表征碳酸盐岩样品的孔隙结构复杂性,且孔隙形态的分形维数与其复杂性呈正相关。通过结合MIP和SEM数据,能够更加全面地分析碳酸盐岩的孔隙结构特征。Mercury intrusion porosimetry(MIP)and scanning electron microscopy(SEM)were used in this study to deeply understand the microscopic pore structure and fractal characteristics of carbonate rocks from the tectonic zone of Bailiang Xusheng Coal mine in Shaanxi Chenghe mining area.Through MIP and SEM analysis of carbonate rock samples from different depths,and drawing double log scatter plots,combined with fractal theory,the fractal dimension of pore structure of carbonate rock samples was calculated and its correlation with porosity was analyzed by combining with fractal theory.The results showed that MIP could provide the distribution information of pore size of the samples,but could not directly reveal the complexity of pore morphology;SEM pore extraction technology could provide high-resolution images of pore morphology of the samples,thus effectively characterizing the complexity of pore structure in the samples,and indicating a positively correlation between the fractal dimension of pore morphology and its complexity.By combining MIP and SEM data,the pore structure characteristics of carbonate rocks could be analyzed more comprehensively.

关 键 词：煤系碳酸盐岩 微观结构 压汞试验 扫描电镜 分形特征 

分 类 号：P618.11[天文地球—矿床学]