电磁场作用下瓦斯煤尘复合爆炸火焰-压力耦合灾变动力学机理研究

煤矿瓦斯煤尘爆炸事故的高效防控是当前矿山安全工程领域亟待解决的重要前沿课题之一。本项目从电磁场对矿井瓦斯煤尘复合爆炸火焰-压力的耦合影响出发，综合运用多学科、多技术手段，采用宏观实验测试、数值模拟及理论分析研究电磁场对复合爆炸过程中火焰、压力、流场等参数的动态作用规律，揭示电磁场对瓦斯煤尘复合爆炸火焰-压力耦合灾变的宏观作用机制；通过微观实验测试、数值计算及理论分析研究电磁场对复合爆炸关键自由基链式反应及其热动力学过程的动态影响特征，从分子动力学水平定性定量揭示电磁场对瓦斯煤尘复合爆炸火焰-压力耦合灾变的微观作用机理。结合宏观、微观研究，构建反映复合爆炸火焰-压力表征参数和微观链‒热反应进程表征参数间的关联模型，从宏观微观层面揭示电磁场诱导瓦斯煤尘复合爆炸火焰-压力耦合灾变动力学机制，并提出控制瓦斯煤尘复合爆炸灾害的新思路和新方法，研究成果可为提升瓦斯煤尘爆炸事故防控技术水平提供基础支撑。

Efficient prevention and effective control of gas-coal dust hybrid explosion accidents in underground coal mine is one of the important frontier topics that need to be solved urgently in the field of coal mine safety engineering currently. This project aims at solving the coupling effect of electromagnetic field on the flame-pressure of coal mine gas-coal dust hybrid explosion, multi-disciplinary and multi-technical approaches will be employed as well. On the hand, macro-experimental testing, numerical simulation, and theoretical analysis are comprehensively adopted to study the dynamic influence of electromagnetic field on the explosion parameters such as flame, pressure and flow in the process of gas-coal dust hybrid explosion in detail. Meanwhile, the macroscopic action mechanism of electromagnetic field on the flame-pressure coupling catastrophe of gas-coal dust hybrid explosion will be revealed vividly. On the other hand, micro-experimental testing, numerical calculation, and theoretical analysis will be used to explore the dynamic influence characteristics of electromagnetic field on the chain reaction and the thermodynamic process of the pivotal radicals and intermediate products of gas-coal dust hybrid explosion. At the same time, the microscopic action mechanism of electromagnetic field on the coupling catastrophe of flame-pressure interaction of gas-coal dust hybrid explosion will be revealed qualitatively and quantitatively from the molecular dynamics level. By combining the macroscopic and microscopic studied conducted above, the correlation model which reflects the relations between characterization parameters of explosion flame-pressure and the microscopic chain-thermal reaction process, consequently, the dynamic mechanism on coupling catastrophic of flame-pressure interaction for the gas-coal dust hybrid explosion induced by electromagnetic field will be revealed comprehensively and thoroughly from the macro and micro perspectives. Moreover, the original idea and novel approach about controlling gas-coal dust hybrid explosion disasters will be put forward as expected, and the research results may provide basic support for improving the technical level of prevention and control of gas-coal dust explosion accidents.