Study on Pore Size Distribution and Permeability of Strontium-source Biocemented Calcareous Sand and Quartz Sand Based on MIP and X-CT

Mercury intrusion porosimetry (MIP) and X-ray micro-computed tomography (X-CT) techniques were used to characterize the pore structure of strontium-source biocemented calcareous sand and quartz sand. Considering the impact of different grouting cycles and depths on treatment, MIP results can be used to characterize pore parameters, including total pore volume, porosity, and pore size distribution (PSD). Additionally, 3D pore models were reconstructed using X-ray CT images to extract pore parameters. Additionally, the Finite Volume Method (FVM) was used for direct seepage simulation at the pore scale to investigate the relationship between the pore characteristics and permeability. The raw data of this study were upload here.

本研究采用压汞法（Mercury intrusion porosimetry，MIP）与X射线显微计算机断层扫描（X-ray micro-computed tomography，X-CT）技术，对锶源生物胶结钙质砂与石英砂的孔隙结构开展表征。考虑到不同注浆循环与注浆深度对加固效果的影响，压汞法测试结果可用于表征孔隙参数，包括总孔体积、孔隙率及孔径分布（pore size distribution，PSD）。此外，本研究通过X射线CT图像重建三维孔隙模型以提取孔隙参数。同时，本研究采用有限体积法（Finite Volume Method，FVM）开展孔隙尺度直接渗流模拟，探究孔隙特征与渗透性能之间的关联。本研究的原始数据已上传至此。