矿井通风难易程度的准确划分及应用

Accurate classification of mine ventilation difficulty degree and its application

针对采用等积孔法难以准确评价矿井(独立通风系统)通风难易程度的问题,以潘西煤矿通风系统为研究对象,提出一种矿井通风难易程度的分级与评判方法。该方法综合考虑矿井风量和等积孔2个指标,制定出通风困难线和通风容易线,把矿井通风系统划分为通风容易区、通风中等区和通风困难区,并建立了通风难易程度的评分模型,给出了评分方法与分级标准。实例分析表明,该方法能更准确地反映矿井通风系统存在的问题,并确定其改进的方向。

The mine( independent ventilation system) ventilation difficulty degree is hard to evaluate accurately by the equivalent orifice. The classification and evaluation method of mine ventilation difficulty degree is proposed,based on the ventilation system of the Panxi coal mine. The difficult ventilation line and the easy ventilation line is devised by making use of the mine ventilation volume and the equivalent orifice,which divided the two-dimensional space into three areas: difficult ventilation area,medium ventilation area and easy ventilation area. A new scoring model was built to evaluate the difficulty of mine ventilation. The calculation formula and the grading standard was then given. The empirical result shows that the model can reflect the problems of mine ventilation system more accurately and clarity the direction of adjustment.