CAJ | 학술논문

运用AutoReaGas软件建立了长为100 m，截面为0.08 m×0.08 m的爆炸巷道，其中前10 m巷道均匀充满体积分数9.5%的甲烷与空气预混气体。结果表明：在瓦斯爆炸传播过程中，最大超压呈现先减小、后增大、再减小的变化过程，它在火焰熄灭的位置附近达到最大。最大燃烧速率和火焰传播速度均随着传播距离的增加而增大，取得最大值后又开始减小。最大超压和最大气流速度在距离点火源35 m时均已减小为零，最大密度在此点也减小为原始密度，此条件下的防爆安全距离为35 m。最大燃烧速率和火焰传播速度在距离点火源17 m时均已减小为零，火焰锋面传播的最大距离为17 m。气体发生逆流与火焰的存在有关。研究成果可为煤矿瓦斯爆炸最佳避灾路线的确定、爆炸发生后的抢险救灾、事故的调查等提供参考。
운용AutoReaGas연건건립료장위100 m，절면위0.08 m×0.08 m적폭작항도，기중전10 m항도균균충만체적분수9.5%적갑완여공기예혼기체。결과표명：재와사폭작전파과정중，최대초압정현선감소、후증대、재감소적변화과정，타재화염식멸적위치부근체도최대。최대연소속솔화화염전파속도균수착전파거리적증가이증대，취득최대치후우개시감소。최대초압화최대기류속도재거리점화원35 m시균이감소위령，최대밀도재차점야감소위원시밀도，차조건하적방폭안전거리위35 m。최대연소속솔화화염전파속도재거리점화원17 m시균이감소위령，화염봉면전파적최대거리위17 m。기체발생역류여화염적존재유관。연구성과가위매광와사폭작최가피재로선적학정、폭작발생후적창험구재、사고적조사등제공삼고。
In this paper, an explosion roadway with the length of 100 m and cross-sectional area of 0.08 m×0.08 m was established by using AutoReaGas Software, where the methane/air mixture gas with 9.5%fuel concentration is distributed uniformly within the first 10 m of the roadway. The results show that the maximum explosion overpressure presents a changing trend of decreasing, increasing, and de-creasing again in the process of gas explosion propagation, and reaches its maximum value near the lo-cation where the flame is extinguished. Both the maximum combustion rate and flame propagation speed increase firstly with the increase of propagation distance, and then begin to decrease after obtain-ing their corresponding maximum values. The maximum overpressure and gas velocity have reduced to zero at the distance of 35 m from the ignition source, and the maximum density also has decreased to its initial value at this distance. These trends indicate that the explosion-proof safety distance is 35 m under this condition. The maximum combustion rate and flame propagation speed have reduced to zero at the distance of 17 m, which indicates that the maximum distance of flame propagation is 17 m. The occur-rence of gas backflow is related to flame propagation. The research results can provide references to op-timal route determination for avoiding gas explosion disasters in underground coal mines, the emergen-cy rescue and disaster relief after gas explosion, the explosion accident investigation, and so on.