目前,矿井主要通风巷道断面的确定方法仍和其它巷道一样,只考虑巷道风速、提升运输和行人,满足《煤矿安全规程》的要求,而忽视了通风巷道断面的经济合理性,造成主要通风巷道的断面偏小,特别是回风巷道,通风阻力很高。据焦作矿务局1982年对13个矿井通用系统的调查,矿井回风巷道断面比进风段小2.74米~2,回风段阻力占全矿井总阻力的61.7％。显然,通风巷道断面的合理与否,其效果差别很大。对于一个矿井,若一条主要通风巷道断面合理,通风费用将节约几万甚至几十万元。全国煤矿之多,其经济效益非常可观。因此,很有必要对通风巷道断面的确定方法予以讨论。本文考虑了利息、巷道施工费,巷道维护费、通风电力费和巷道变形等五个因素,得出经济 At present, the method of determining the main ventilation tunnel section of a mine is still the same as that of other tunnels. Only considering the wind speed of the roadway, improving the transport and pedestrians and meeting the requirements of “Coal Mine Safety Regulations”, the economic rationality of the ventilation tunnel section is ignored and the main ventilation tunnel Section of the small, especially the return airway, high ventilation resistance. According to a survey conducted by Jiaozuo Mining Bureau on 13 general systems of mines in 1982, the section of mine return airways is 2.74 m ~ 2 less than the inlet air section, and the return air section resistance accounts for 61.7% of the total mine total resistance. Obviously, ventilation tunnel section is reasonable or not, the effect varies widely. For a mine, if a section of the main ventilation tunnel section, ventilation costs will save tens of thousands or even hundreds of thousands of dollars. As many coal mines nationwide, its economic benefits are very impressive. Therefore, it is necessary to discuss the method of determining the section of ventilation tunnel. This paper considers the five factors of interest, roadway construction costs, roadway maintenance fees, ventilation power costs and roadway deformation, draw the economic