Numerical simulation study of radon concentration distribution and influencing factors in a single-head roadway

In this study, we extensively examined the distribution of radon concentration and its influencing factors in a single headway were extensively examined using numerical simulation methods. Initially, the hazards posed by radon and its sources in mines were introduced. Subsequently, a roadway pressure-entry ventilation model was constructed, taking a section of a uranium mine's one-head roadway as the backdrop. This model accounted for the influence of wind speed, temperature, and humidity on radon concentration during the simulation process. The findings reveal that under pressure-entry ventilation conditions, the wind flow field in the sole headway can be classified into a vortex zone, transition zone, and stable zone. Furthermore, an appropriate increase in the air velocity of the press-in ventilation contributes significantly to reducing radon concentration in the roadway. Additionally, both temperature and humidity were observed to impact the distribution of radon concentration. This study holds both theoretical and practical implications for optimizing mine ventilation systems and safeguarding the health of mine workers.