矿井倾斜巷道火灾烟流运移规律研究现状与发展趋势

Research status and development trend of smoke flow migration law in inclined mine roadway

从理论研究、实验研究和数值模拟三方面,对矿井倾斜巷道火灾时期火风压、火区阻力、逆流层、临界风速,以及烟流参数变化规律等的研究进展进行了综合论述,指出了现有研究存在的局限性和不足,并预测其发展趋势。分析认为:应更加注重研究矿井倾斜巷道火灾时期各物理量及其相互之间的影响关系;应进一步建立大尺寸、全方位、立体化的矿井倾斜巷道火灾实验模型,且在实验过程中要同时考虑巷道坡度、可燃物种类、火源位置和强度、风速大小等因素的影响;物理建模和数值模拟时,应紧密结合现场工况条件,同时考虑巷道间的相互影响。深入研究矿井倾斜巷道火灾时期烟流运移规律,可为完善整个矿井巷道火灾理论及进行火灾救援奠定基础并提供技术支持。

From three aspects of theoretical research,experimental research and numerical simulation,the research progress of fire wind pressure,fire zone resistance,counter-current layer,critical wind speed and the variation law of smoke flow parameters during fire in mine inclined roadway are comprehensively discussed.The limitations of the existing research are pointed out and its development trend is put forward.The analysis shows that:more attention should be paid to the study of various physical quantities and their influence relations during fire in mine inclined roadway;it is necessary to further establish a large-scale,omni-directional and three-dimensional experimental model of fire in mine inclined roadway,and the factors such as roadway slope,combustible type,fire source position and intensity,wind speed and so on should be taken into account in the experimental process;in physical modeling and numerical simulation,the field conditions should be closely combined,and the interaction between tunnels should be considered.In-depth study of the migration law of smoke flow during fire in mine inclined roadway can lay the foundation and provide technical support for the improvement of the whole mine roadway fire theory and fire rescue.