王晁煤矿通风系统阻力测定及优化方案

针对王晁煤矿的通风系统现状，采用基点气压计法对选定的测定路线进行了矿井通风阻力测定，并计算了矿井总风阻、自然风压、等积孔和矿井外部漏风率，判断了该煤矿通风的难易程度和矿井通风系统的漏风管理状况，对该煤矿目前的通风系统在进风段、用风段和回风段的通风阻力分布情况及其原因进行了分析，并据此提出了以降低矿井通风阻力为目标的近期和远期矿井通风优化方案。目前，该矿已对-400m集中回风巷进行了整修，在矿井风量不变的情况下，矿井通风阻力减小了约260Pa。

Resistance Measurement and Optimized Plan of Ventilation System in Wangchao Mine

According to the present status of the mine ventilation system in Wangchao Mine,the base point gas pressure measuring method was applied to the mine ventilation resistance measurement on the selected measured route and to calculate the mine total ventilation resistance,natural ventilation pressure,equivalence borehole and mine outer air leakage rate.The mine ventilation difficulty degree and the air leakage management status of the mine ventilation system were judged.The ventilation resistance distribution conditions of the air income section,the ventilation section and the air retuned section of the present mine ventilation system and the cause were analyzed.Based on the circumstances,taking the reduction of the mine ventilation resistance as the near target and the future mine ventilation optimized plan was provided.At present,the-400 m centralized air returning roadway was repaired.Based on the mine ventilation quantity uncharged,the mine ventilation resistance was reduced by over 260 Pa.