林西矿通风系统优化改造

The Optimization Transformation of Ventilation System in Linxi Coal Mine

针对林西矿水平多、通风路线长、巷道网络系统复杂、回风阻力较大等问题,在对林西煤矿进行通风阻力测定、构筑物阻力测试的基础上,数据分析表明,林西矿风门过多且部分风门位置不合理、回风巷道局部冒落是通风阻力大的主要原因。利用通风系统模拟仿真软件,对通风系统改造的合理方案进行优化———拆除不合理的风门、增加和改变部分风门。经过现场实施,风机运转参数和井下通风情况与方案计算结果吻合,矿井总阻力降低123.4 Pa,总风量增加22.11m3/s,等积孔增大0.488 m2,取得了良好的效果,为林西矿的安全生产提供了保障。

Aiming at the problem of multi-level,long ventilation route,the complexity of ventilation roadway network system,large return air resistance in Linxi coal mine,on the basis of testing ventilation resistance and structure resistance in Linxi coal mine,the tested results show that the main cause of large ventilation resistance is too much air door and part of air door in the unreasonable position.By using the ventilation system simulation software to optimize the reasonable program of ventilation system transformation——removing the unreasonable air doors and increasing and changing partial air door.Fan operating parameters and the conditions of the underground ventilation consistent with the program results by site implementation.The total resistance reduced 123.4 Pa.The total air volume increased 22.11 m3/s.The equivalent orifice increased 0.488 m2.The good result provided guarantee for the safety production in Linxi mine.