针对矿井内风流脉动的特性，基于矿井通风理论、流体力学理论、空气动力学 理论、传热传质学理论、多孔介质渗流理论，建立了矿井风流脉动下采空区流场的计算模型；通 过数值模拟，研究了脉动风流作用下采空区流场的分布特点，并通过实验对其进行了测试和 验证。结果表明所建立的采空区非稳定流场的数学模型可用于研究采空区流场分布状态，并 为采空区火灾防治提供有效的手段。

Aiming at the characteristic of airflow fluctuating in mine, based on the theory of mine ventilation, the theory of fluid mechanics, the theory of aerodynamics, the theory of mass and heat transfer, and the theory of infiltration flow through porous media, mathematical model about airflow fluctuating in mine is established；distribution features of flow field in goaf under the airflow fluctuating are researched by numerical simulation, and the model is reset and tested by corresponding experiment. The results show: mathematical model establi shed about airflow fluctuating in mine can be used for researching dist ribution of flow field in goaf,and can provide an effective method to fire preve ntion and treatment in goaf.