运动场馆火灾烟气蔓延规律数值模拟研究

Study on the Computer Simulation of Fire Smoke Spread in the Sports Venue

运动场馆规模大、人员密集、功能复杂、用电负荷大、配电线路多、火灾荷载大,一旦发生火灾可能导致群死群伤恶性事故的发生。研究运动场馆火灾情况下烟气变化规律,能够更好的指导消防安全设计。以某运动场馆为例,应用火灾模拟软件对其火灾情况下烟气蔓延过程进行数值模拟研究,分析了常见自然排烟方式对烟气层的高度、温度、氧气浓度、一氧化碳浓度变化的影响,从而为运动场馆防排烟设计提供依据。

The sports venues were buildings of large scale,high occupancy,complex functions,more distribution lines and more large electricity load and fire load. The sports venues fire could cause large casualty accidents more easily. The study on the gas variation of sports venues fire could better guide the fire safety design to ensure the safety of personnel. Based on a typical sports venue,this paper studied gas spread process in fire with computer simulation software（ CFAST）,analyzed the effect of natural smoke exhaust on the variation of smoke layer height,temperature,oxygen concentration and carbon monoxide concentration,and then provided corresponding guidance for smoke control design in sports venues.