The methane transmission with ventilation airflow in the mine ventilation network can be considered as a problem of one dimensional longitudinal turbulent dispersion. Based on the one dimensional longitudinal turbulent dispersion equations, we educe the analytical solution of temporal and spatial distribution of methane concentration for continuous point source methane emission in the ventilation roadway theoretically. The methane concentration relationship formula between the two sections is derived in the roadway. Combining with the law of conservation of methane quality, the mathematical model of methane transmission in the mine ventilation network is established, and the simulation program of methane transmission is compiled. Examples analysis show that the methane peak spread in the ventilation roadway is the decay process, and its decay rate depends on the methane peak height and its duration time when the distance between the two airflow sections is fixed. The time of methane peak appearing in the downstream section lags behind the upstream section. If the length or the section area of the roadway increases, the methane peak will appear later in the downstream section, and the peak height will be lower. The smaller the roadway air quantity is, the later the peak appears at the downstream section and the lower the peak value is. If the coefficient of friction resistance increases, the time of peak appearing remains unchanged and the peak value decreases. Furthermore, the fundamentals of the methane peak spread in the ventilation network are analyzed by numerical simulation. Finally, Application results show that the proposed model and algorithm of methane spread in ventilation networks are effective. The researching findings in this paper can contribute to quantitative analysis of the degree of pollution and containment spread caused by abnormal gas emission in the underground for the future research. CITATION:Chen, K Y, Li, S G, Zhou, F B, Wei, L J and Xia, T Q, 2019. Study on turbulent dispersion simulation of concentrative methane emission in mine ventilation network, in Proceedings Australian Mine Ventilation Conference 2019, pp 3343 (The Australasian Institute of Mining and Metallurgy: Melbourne).