平煤八矿东风井通风系统阻力测定与方案优化

针对平煤八矿东风井主要通风机存在负压过高的问题,采用气压计基点法对东风井通风系统进行通风阻力测定,由测定结果得出:东风井通风总阻力为3 077 Pa,超过了《煤矿井工开采通风技术条件》规定的2 940 Pa,进风段与回风段的通风阻力偏大。主要原因是通风路线过长、有些巷道断面过小、风量分配不合理。结合远期开采规划,对东风井通风系统提出了优化方案,运用MVSS软件对优化方案进行通风网络解算,通过综合比较,最终确定采用方案二对东风井通风系统进行优化。

Ventilation System Resistance Measurement and Ventilation Plan Optimization of East Mine Ventilation Shaft in No.8 Mine of Pingmei

According to the negative pressure too high existed in the main ventilator of Mine East Ventilation Shaft in No.8 Mine of Pingmei,a barometer base point method was applied to the ventilation resistance measurement of the ventilation system.The measured results showed that the total resistance of mine ventilation in Mine East Ventilation Shaft was 3 077 Pa,over 2 940 Pa stipulated in Coal Mine Ventilation Technical Condition.The ventilation resistances at the air income section and the air retuning section were too high.The main causes were the ventilation route too long,some gateway cross section too small,ventilation distribution irrational.In combination with the long term mining plan,an optimized plan of the ventilation system in the Mine East Ventilation Shaft was provided.The MVSS software was applied to the ventilation network calculation of the optimized plan.With the comprehensive comparison,No.2 plan was finally applied to the optimization of the ventilation system in Mine East Ventilation Shaft.