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随着柴油铲运机设备的采用,分中段同时作业的主要回采作业集中在一个中段;生产中段逐步下移,深矿井和高温矿井日益增多,使矿井风量大幅度地增加,矿井通风总阻力急剧上升,有效风量率降低,能耗增大。为了充分利用各中段进、回风巷的通风能力,使处于生产低峰期中段的进、回风巷道亦能满足负荷通风,为处于生产高峰期中段分担部分风量,使各中段通风巷道不必按生产高峰期需风量要求设计大断面,仅按平均生产需风量来确定小断面,从而大大节省工程量。因而须将各中段的进、回风巷
With the adoption of diesel scraper equipment, the main mining operations in the middle and sub-sections concentrated in one middle section. The middle section of production was gradually moved down. The increasing number of deep mines and high-temperature mines increased the air volume of the mines drastically and the total resistance to mine ventilation was drastic Rise, effective air flow rate decreased, energy consumption increased. In order to make full use of the ventilation capacity of the middle and the return airways, the inlet and return airways in the middle of the low peak period of production can also satisfy the load ventilation, and share part of the air volume in the middle of the peak production period, so that the middle section ventilation airways do not have to press Demand peak wind production requires large cross-section design, only the average volume of air needed to determine the production of small cross-section, thus saving a significant amount of engineering. Therefore, the middle of the entrance, return airway