The fissures above the stope are good channel for gas movement. Regarding the mining fractured rock mass as a porous medium, based on the theoretical analysis of the gas source in the fracture zone of the fully mechanized caving face, this paper further analyzed the gushing characteristics of the gas in the goaf under the condition of mining fracturing field and the flow and collection characteristics of the gas in the overlying strata of stope. The results show that the gas migration law in the mining fracture field is that the gas emission in the upper part of the trapezoidal structure is large, and the fractures in the vertical layer and the vertical direction are oriented to the gas flow.%采场上方裂隙是瓦斯移动的良好通道.将采动裂隙岩体看作多孔介质,在理论分析综放工作面裂隙带内瓦斯来源的基础上,分析了采动裂隙场条件下采空区瓦斯的涌出特征和采场覆岩内瓦斯的流动与汇集特征.研究结果表明,采动裂隙场中的瓦斯运移规律是梯形结构上部离层区域的瓦斯涌出量大,且离层裂隙和竖直方向上的破断裂隙对瓦斯流动具有导向作用.
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