角联网络下行通风火灾的实验研究  

Experimental Study on Descentional Ventilation Fire in Diagonal Network

作　　者：周福宝[1] 王德明[1] 周延[1] 

机构地区：[1]中国矿业大学能源科学与工程学院,江苏徐州221008

出　　处：《矿业安全与环保》2001年第6期1-3,5,共4页Mining Safety & Environmental Protection

基　　金：国家自然科学基金(59876045;59936140)

摘　　要：通过开展角联网络的火灾模拟实验,观察到下行风流的角联分支受火灾作用而发生逆转的全过程。实验结果表明:下行通风角联分支风流的逆转可以归结为烟流和风流异向分层流动的量变过程和风向突变的质变过程。角联分支的火灾作用改变了上风侧旁侧支路的风量和下风侧旁侧支路的阻力特性。Fire experiments were conducted in a diagonal network. Through experiments, reversal procedure of diagonal branch with descentional ventilation was observed, which was caused by fire. Results obtained show that reversal procedure of diagonal branch contains two stages, one is stratified flow of smoke and airflow toward different directions, which is a quantitative change stage. The another one is catastrophe of airflow direction, which is a qualitative change stage. Also, the fire can affect airflow quantity in the side branches upwind and resistance in the side branches downwind.

关 键 词：矿井火灾 角联网络 下行通风 烟流 风流 

分 类 号：TD752[矿业工程—矿井通风与安全]