爆炸与冲击2025，Vol.45Issue(4)：163-176,14.DOI:10.11883/bzycj-2024-0142
基于正交试验的U形通风采煤工作面瓦斯爆炸超压影响因素分析
Analysis on influencing factors of gas explosion overpressure peak in a U-shaped ventilation coal face based on orthogonal test
摘要
Abstract
Numerical simulation was carried out by using the Fluent simulation software and combining it with the situation of the working face 3906 in a mine to investigate the propagation law of gas explosion in a U-shaped ventilation coal mining face and to explore the sensitivities of the overpressure attenuation of a gas explosion to different influencing factors.The relative errors between the numerically-simulated results and experimental ones are less than 15%,which verifies the reliability of the mathematical model developed in this paper.Then,the key parameters,namely,grid size,iteration time step,and ignition temperature are optimized to 0.2 m,0.05 ms,and 1900 K,respectively.Numerical simulation indicates that the relationship between the peak of the explosion overpressure and the distance away from the explosion center of the coal face meets an exponential function relationship.The relationship between the arrival time of the peak explosion overpressure and the distance away from the explosion center meets a linear function.By designing an orthogonal array,16 sets of data were obtained through simulation,and the following analyses were conducted based on this data.The extreme difference values of the three main control factors were obtained by using extreme difference analysis.The extreme difference value of the temperature is the greatest,the one of the gas concentration take the second,and the one of the gas accumulation area pressure is the least.The most significant impact of the temperature on the explosion overpressure attenuation in the numerical simulation,in which the R-value reaches 5.928.ANOVA analysis was carried out to study the significances of the main control factors affecting the explosion overpressure attenuation rate.In the three main control factors,the significance of the temperature is the most,the one of the gas accumulation zone pressure comes second,and the one of the gas concentration is the weakest.And the temperature shows a significance level of 31.835,while the other two factors are not significant.关键词
U形通风/采煤工作面/瓦斯爆炸/超压衰减率/正交试验Key words
U-shaped ventilation/coal face/gas explosion/explosion overpressure attenuation rate/orthogonal experiment分类
力学引用本文复制引用
刘佳佳,张翔,高志扬,张扬,陈玖强,靳马超..基于正交试验的U形通风采煤工作面瓦斯爆炸超压影响因素分析[J].爆炸与冲击,2025,45(4):163-176,14.基金项目
国家自然科学基金(52074106) （52074106）
河南省优秀青年科学基金(232300421061) （232300421061）
中国博士后科学基金(2024M750803) （2024M750803）
深部煤矿采动响应与灾害防控国家重点实验室开放基金(SKLMRDPC22KF11) （SKLMRDPC22KF11）
河南理工大学青年骨干教师培养计划(2023XQG-07) （2023XQG-07）
