Chaotic characteristics extraction of coal mine gas emission system via cloud model

Coal mine gas emission system is a strong nonlinear chaotic system changing over time and space together with many uncertain factors, how to dig up the chaotic characteristic from the gas emission time series more accurately, which will be of great significance to prevent the gas disasters and accidents. From the perspective of chaotic dynamics, this paper is based on the gas concentration time series in the mine working face with the help of cloud model to simulate the time series data uncertainty analysis, finally calculate the maximum Lyapunov index, preliminarily proves that there is chaotic characteristic in the working face gas emission system.