陕西煤炭2025，Vol.44Issue(6)：38-45,8.DOI:10.20120/j.cnki.issn.1671-749x.2025.0607
基于CT扫描技术的煤岩微观结构分析与渗流特性研究
Microstructure and seepage characteristics of coal and rock based on CT scanning technology
摘要
Abstract
This article is based on industrial computed tomography CT scanning technology,the three-dimensional recon-struction of pore microstructure and seepage characteristics of rock samples from the eastern tectonic area of Bailiang Coal Mining Area in Chenghe Mining Area,Weinan,Shaanxi Province were studied,and the purpose of the study was to explore the distribution of pore morphology and seepage characteristics with the depth change of fault structure.By filtering,binariz-ing and threshold segmentation of rock microscopic CT images,they are converted into digital images to provide image data for subsequent microscale model reconstruction,and the porosity and pore size distribution of different rock samples are ana-lyzed.The results show that the porosity of the tested rock samples is mainly distributed between 2.66％and 6.69％,and increases with the increase of sampling depth,especially the porosity of the rock samples collected near the fault structure is higher.The change of porosity between different lithologies indicates that the lithological transition will lead to the rearrange-ment of pore structure,which in turn will affect the permeability.In the test samples,pore connectivity has a significant effect on the permeability,and the permeability of rock samples with more isolated pores is lower,while the permeability of rock samples with more connected pores is higher.As the sampling depth increases,the closer the distance from the tectonic fault,the tortuosity and pore structure complexity of the rock sample increase.关键词
CT扫描/微观结构/三维重构/渗流特性/断层构造Key words
CT scanning/microstructure/3D reconstruction/seepage characteristics/fault structure分类
矿山工程引用本文复制引用
韩艳龙,李魁,贾圆,常锐军,汪添翼,陈伟..基于CT扫描技术的煤岩微观结构分析与渗流特性研究[J].陕西煤炭,2025,44(6):38-45,8.基金项目
国家自然科学基金项目资助(41807192) （41807192）
