CAJ | 학술논문

为研究甲烷煤尘爆轰过程中气固两相耦合效应及量化关系.采用理论分析和实验的方法,计算了不同体积分数的甲烷、不同质量浓度的煤尘及甲烷煤尘混合物在燃烧、爆轰过程中爆压和爆速等重要参数.理论分析揭示了燃烧波、爆轰波的传播特征,爆炸实验验证了燃烧波和爆轰波传播规律.研究结果表明:甲烷的燃烧加速煤的热解,煤粉挥发份析出较快;初始阶段甲烷气体的反应速度快,压力上升速率快;煤在高温下快速热解出可燃气体,并发生闪燃;因此,甲烷煤尘混合物爆轰比单一的气相、固相爆轰的分析和测试困难的多.该研究成果对于煤矿安全生产防治抑爆技术等应用具有参考价值.
위연구갑완매진폭굉과정중기고량상우합효응급양화관계.채용이론분석화실험적방법,계산료불동체적분수적갑완、불동질량농도적매진급갑완매진혼합물재연소、폭굉과정중폭압화폭속등중요삼수.이론분석게시료연소파、폭굉파적전파특정,폭작실험험증료연소파화폭굉파전파규률.연구결과표명:갑완적연소가속매적열해,매분휘발빈석출교쾌;초시계단갑완기체적반응속도쾌,압력상승속솔쾌;매재고온하쾌속열해출가연기체,병발생섬연;인차,갑완매진혼합물폭굉비단일적기상、고상폭굉적분석화측시곤난적다.해연구성과대우매광안전생산방치억폭기술등응용구유삼고개치.
@@@@In order to study the gas-solid coupling effects and their quantitative relationship during methane-coal dust detonation, the theoretical analysis and experimental methods are used to calculate the important parameters such as detonation pressure and velocity in the process of combustion and detonation with different concentrations of methane, coal dust and their mixture respectively. The theoretical analysis reveals the propagation characteristics of the combustion and detonation waves and the explosion experiments verify the combustion and detonation wave propagation characteristics. The theoretical and experimental results show that the combustion of the methane accelerates the coal pyrolysis and the coal volatile matters are pulverized quickly. In the initial stage, the reaction rate of the methane gas and pressure increase faster and larger. The coal at a high temperature is rapidly thermally pyrolysed to combustible gas and the particles flashover is occurred. Therefore, it is more difficult for testing and analyzing the detonation by a mixture of methane-coal dust than testing a single gas or solid phase. The study on the influence of the mixing ratio and concentration of methane and coal dust on detonation parameters has a significant reference value for the safe production and explosion prevention in coal mines.