Theoretical analysis and experimental study on backflow smoke of mine laneway wood fire

The conditions and characteristics theories of backflow smoke were studied to know about the danger of backflow smoke of mine fire.Wood fire experiments in real laneway were carried out.The backflow condition was studied from two aspects:the pressure balance of backflow stopping point,the other one is the least inflowing air velocity.The characteristic of backflow smoke was studied based on environmental hydrodynamics,heat transfer and some research results of formers.Wood fire experiments were carried in real laneway.And the experimental data and phenomena and backflow characteristics were contrasted,analyzed,validated to each other.The characteristic parameters of plume mathematical models and experimental data are in good agreement with experimental phenomena.