Y型通风下采空区自燃CO蔓延规律仿真研究  

CO Spreading Ruler of Spontaneous Combustion in Goaf Under Y-ventilation

作　　者：张娇[1] 王智懿[1] ZHANG Jiao;WANG Zhiyi(College of Energy Engineering,Institute of Yulin,Yulin,Shanxi 719000,China)

机构地区：[1]榆林学院能源工程学院,陕西榆林719000

出　　处：《中国锰业》2018年第4期138-141,共4页China Manganese Industry

摘　　要：为探明Y型通风下采空区煤自燃发火温度、CO的分布规律;采用Pyro Sim火灾仿真软件,分别构建火源位置、风速不同的6种工况的采空区模型,进行数值模拟,比较各工况下温度、CO的分布、蔓延规律;研究发现:采空区煤自燃发火时温度的分布与火源位置及风速关系不大;CO的蔓延与火源位置及风速有关,当火源位于采空区中间时,CO向回风巷侧蔓延,火源位于采空区左侧时,CO向回采工作面蔓延,风速越大CO越容易蔓延至工作面;当不知火源位置时,若需要对CO钻孔导流,则孔钻的位置最好靠近采区工作面。In order to find out the spread law of temperatm~ and CO in goaf under Y-ventilation. the PyroSim in fire simulation software was used to construct the goaf model with six different operating conditions. Compared with the temperatre and CO distribution and spread law, we have found that the distribution of temperatm~ in goaf which has little related to different of the fire source and the wind speed. The spread of CO is related to different of the fire source and the wind speed. The spread of CO is related to the location of the fire source and the wind speed. When the fire source is located in the middle of the goaf, CO will spread to the side of the retum wind lane. When the fire source is located on the left side of the goaf, CO will spread to the working face. The higher the wind speed, the easier it is for the CO to spread to the working face. When it is not known where the fire source is located, it is necessary to divert the CO hole. The position of the hole drill is preferably close to the working face.

关 键 词：Y型通风 采空区 煤自燃 CO蔓延 温度分布 PyroSim软件 

分 类 号：TD752[矿业工程—矿井通风与安全]