Abstract:Ensuring a reliable mine ventilation network is one of the primary strategies to achieve the required air volume at the operating point of a mine quarry. Taking a uranium mine ventilation network as the research object, this paper firstly analyzes the radon concentration distribution in the tunnel under different ventilation parameters and estimates the total ventilation volume required for the ventilation tunnel. Then, using the path entropy theory, air flow transmission path, network flow rate, and radon concentration variation are combined to derive the definition of wind path entropy characterizing the wind performance of uranium mine ventilation. Finally, combined with the maximum entropy theory, a network reliability model that considers the mesoscopic centrality of the network topology to weigh the wind path entropy is proposed, and the model is worked out and analyzed. The experimental results show that the increase of the path length from the human wind entrance makes the probability of transporting radon in each path uneven, the reliability of the end nodes of the network decreases, and the increase of the inlet and return air paths is beneficial to improve the network reliability.