Dynamic Prediction Technology of Gas Emission Quantity in High-efficient and High-yield Working Face

According to the gas emission characteristics at high yield and efficient working face, the laws between the working face advancing velocity and gas emission in high-efficient and high-yield Shiquan experimental Coal Mine are researched. Based on the laws, the mathematical model of dynamic source prediction method was proposed. With traditional method of different gas source and the dynamic prediction method in Shiquan Coal Mine of high yield and efficient mine working face adjacent effect of prediction method was inspected. The results show that the dynamic point source method can improve the prediction precision of the working face gas emission.