机掘工作面有效通风及其评价指标研究

就评价机掘工作面的有效通风提出了空气年龄、空气品质、换气效率、排污效率等概念，并分析给出了其指标的计算模型。有效通风指标不仅与空气年龄有关，而且与掘进工作面通风气流组织、污染物浓度及分布特性有关。提高机掘工作面空气品质，除了要提高换气排污效率外，还应有效地组织掘进工作面的通风气流

Study on Available Ventilation and Its Assessment Index of Mechanized Heading Face

Some generalities such as air age,air quality,air exchange efficiency and ventilation efficiency for evaluated available ventilation of mechanized heading face are introduced.After analysis,a calculation model is given to those indexes.It is found that the index of available ventilation not only correlates with the air age,but also with the organization of the airflow in the heading face,concentration of the coniaminants and characteristic of distribution.In order to improve the air quality,to effectively organize the airflow is absolutely nccessary,besides to raise the efficiency of exchange ventilation.