The experiment method to measure low gas permeability rate by KlinKenberg effect is adopted for coal samples of northeast region of China to study gas slippage effect in coal reserve in this paper.The influence of single-phase KlinKenberg permeability on gas permeability in diversity confining pressure and pore pressure was analyzed.The experiment results showed that there were gas KlinKenberg slippage effects in low coal reserve.The gas KlinKenberg slippage effects has greater contribution to gas permeabil...