黑龙江科技大学学报2025，Vol.35Issue(6)：930-935,968,7.DOI:10.3969/j.issn.2095-7262.2025.06.010
基于CT扫描的冻融红砂岩渗流特性
Seepage characteristics of freeze-thaw red sandstone based on CT scanning
摘要
Abstract
This paper is an effort to investigate the effect of freeze-thaw cycles on the seepage charac-teristics of red sandstone.The study operates by conducting freeze-thaw cycle experiments and CT scan-ning tests;performing a three-dimensional reconstruction of freeze-thaw red sandstone by using CT ima-ges;extracting the mesoscopic pore parameter of the freeze-thaw red sandstone and simulating the seep-age;and establishing a fractal permeability prediction model of red sandstone with pore fractal dimensions based on the K-C seepage equation and the relationship between specific surface area and fractal dimen-sion of the rock,The results show that,with the number of freeze-thaw cycles increase,the mesoscopic parameters including the minimum pore radius,the maximum pore radius,the average pore size,and the porosity of the red sandstone increase continuously,while the fractal dimension gradually decreases.The errors of the permeability calculated by the fractal permeability prediction model of red sandstone after 0,15,35,and 55 freeze-thaw cycles differ from the permeability obtained by three-dimensional reconstruc-ted numerical simulation by7.78%,7.61%,10.08%and-0.91%respectively,validating the accura-cy of the fractal permeability prediction model.关键词
冻融循环/三维重构/渗流模拟/分形维数/预测模型Key words
freeze-thaw cycle/3D reconstruction/seepage simulation/fractal dimension/prediction model分类
建筑与水利引用本文复制引用
Gao Hongmei,Xu Li,Yang Fan,Li Hongwei..基于CT扫描的冻融红砂岩渗流特性[J].黑龙江科技大学学报,2025,35(6):930-935,968,7.基金项目
黑龙江省省属高校基本科研业务费项目(2023-KYYWF-0533) （2023-KYYWF-0533）
国家自然科学基金项目(52474218) （52474218）
