Abstract: In this paper, based on the research on gas geological characteristics of 10 pairs of outburst mines, we analyzed the gas content, pressure and measured data of emission quantity, summarized the rules of gas geology in Kailuan Mining Area, and put forward the gas occurrence under stepwise tectoniccontrol mode. The results show that the axial part of syncline structure is beneficial to the gas occurrence, and the gas unusual district distribution is controlled by the distributions of reverse fault, groundwater runoff and magmatic rock. Meanwhile, the tectonic setting of gas occurrence is established by the regional structure, while the gas occurrence in Kailuan Mining Area is controlled by the strurctures in the mining area level. Moreover, the gas distribution is different in each syncline structure, and the gas occurrence in one mine is controlled by the structures in the mine area.

Key words: stepwise tectonic control, gas distribution, Kailuan mining area