基于数值模拟的矿井火灾疏散路径选取研究

Selection of evacuation routes in mine fire based on numerical simulation

针对矿井火灾中人员疏散比较困难的问题,本文通过对某矿发生矿井火灾后的情景进行数值模拟,利用FDS软件分析巷道中烟气蔓延的情况、CO浓度的变化以及人员能见度的变化情况等对人员安全疏散的影响,模拟烟气动态的流动情况,从而在错综复杂的矿井巷道中选取可以安全疏散的有效路径,对于普通的通风状态无法安全疏散的情况,可以通过采用反风的方式来阻挡烟气对于可疏散路径的影响,确保人员的安全疏散。

Aiming at the difficulty of people evacuation in the mine fire,the scene after mine fire in a mine was simulated.The FDS software was used to analyze the smoke spread in the roadways and the effects of varied CO concentration and visibility on the safe evacuation.And the fume flow was dynamically simulated.So the safe and optimum evacuation route could be determined in the complicated roadways.For the ordinary ventilation mode,it is difficult to achieve safe evacuation;therefore,the air reversing should be adopted to ensure safe evacuation.