Radon (Rn-222) found in uranium mine shaft ventilation exhaust gases could pose hazards to the surrounding environment and the public by virtue of its progeny. Numerical calculations of the physical model for uranium mine under complex terrains were conducted to evaluate atmospheric dispersion and radon concentration distribution from the ventilation shaft using CFD methods. Factors of the two directions of atmospheric wind and four release height conditions (1, 3, 5 and 8 m) were considered to research radon dispersion in the study. Results showed that radon pollution in the North wind direct...
