矿井通风难易程度分级标准的探讨

Discussion on Gradation Standard of Mine Ventilation Difficulty Degree

为了解决目前矿井通风难易程度评价所采用的等积孔分级法存在的失效问题,提出一种新的等积孔分级方法。该方法根据矿井总风量的大小和矿井可承受通风负压,把矿井总风量划分为5个级别,并且每一级别重新划定等积孔大小,以反映不同矿井的通风难易程度(困难、中等和容易)。结果表明新的标准有效地解决了评价现代化大风量矿井的通风难易程度的难题。

In order to solve the efficiency lost problems existed in the equivalent orifice grading method applied to the mine ventilation difficult degree evaluation, a new equivalent orifice grading method was provided. Based on the size of the mine total ventilation volume and the negative pressure of the mine acceptable ventilation, the mine total ventilation volume could be divided into five grades with the new method. Each grade could reset the size of the equivalent orifice in order to reflect the ventilation difficult degree （ difficult, medium and easy） of each mine. The results showed that the new standard could be effective to solve the evaluation on the ventilation difficult problems of the modernized mine with high ventilation volume.