Related Experiment Video
Updated: May 3, 2026

Reservoir Condition Pore-scale Imaging of Multiple Fluid Phases Using X-ray Microtomography
Published on: February 25, 2015
CFD simulations and control of radon migration in tunnels with fracture-pore covered layers
Xuanli Yao1, Yongjun Ye2, Daijia Chen1
1School of Resources Environment and Safety Engineering, University of South China, Hengyang, 421001, China.
Abstract:
In underground engineering, a covered layer is usually established to provide certain support and protection for underground tunnels. At the same time, the covered layer can also inhibit radon exhalation from surrounding rock. To study radon exhalation in the covered layer and surrounding rock of a tunnel, and to control radon migration in tunnels with fracture-pore covered layers, a specific underground tunnel was chosen for analysis. A radon migration and dynamics model in the fracture-pore medium was developed, and computational fluid dynamics (CFD) simulations were performed to analyze the radon exhalation from the covered layer and surrounding rock. The impact of factors like pressure difference, diffusion coefficient, and permeability on the radon exhalation rate was examined. The results indicated that adjusting these parameters could effectively manage the radon exhalation rate, with a particular focus on the proposed active depressurization (AD) method, which can significantly reduce the radon exhalation rate and provide scientific basis for radon pollution control in underground engineering.
More Related Videos
10:18Dynamic Pore-scale Reservoir-condition Imaging of Reaction in Carbonates Using Synchrotron Fast Tomography
Published on: February 21, 2017
10:27A Uniaxial Compression Experiment with CO2-Bearing Coal Using a Visualized and Constant-Volume Gas-Solid Coupling Test System
Published on: June 12, 2019
Related Concept Videos
Deformation in a Circular Shaft
Boundary Conditions: Lossless Lines
At the receiving end, the boundary condition states that the voltage equals the product of the receiving-end impedance and current. This relationship is expressed as a function of the incident and...
Fluid Movement Between Compartments
Differential Leveling
Uniform Depth Channel Flow
Uniform Depth Channel Flow: Problem Solving