新型阻火墙对电缆沟的防火效果研究

Study on Fire Prevention of the New Fire Resisting Wall on Cable Trench

为了研究新型阻火墙对电缆沟的防火效果,采用火灾动力学软件PyroSim构建了电缆沟内电缆火灾场景.着重分析传统阻火墙和新型阻火墙两种情况下,电缆火灾发生时的烟气在电缆沟内部的蔓延情况,尤其是对着火时电缆沟内的烟气含量、温度、热释放速率以及燃烧速率进行仿真模拟.结果得出:新型阻火墙可以减缓电缆的延燃,对电缆沟有良好的阻火、阻烟、隔热效果,可以为电缆沟内电缆加强火灾防护提供合理的科学指导意见.

In order to study the effect of the new fire resisting wall on cable trench,cable fire scene in cable trench is built by the fire dynamics software PyroSim.The propagation of the smoke in the cable trench is analyzed in the situations of traditional fire wall and new type of fire resistance wall.The gas content,temperature,heat release rate and combustion rate of the cable trench were simulated particularly.The results show that the new fireproof wall can slow down the cable burning,and have a good fire resistance,smoke resistance and heat insulation effect on cable trench,which can provide reasonable and scientific guidance for strengthening fire protection of cable in cable trench.