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目的：为了解坑道通风条件下空气中微生物状况，保障进驻人员的健康。方法：应用沉降法监测坑道内通道及房间的空气含菌量。结果：密闭坑道的通道及房间平均厌氧菌数分别为３２８８ＣＦＵ·ｍ－３及３５３８ＣＦＵ·ｍ－３，均高于对照，且差异非常显著；半密闭坑道的通道及房间空气细菌总数、真菌数、厌氧菌数与对照比较，前者Ｐ＜０．０５，后者Ｐ＜０．０１；通风坑道的房间空气细菌总数及真菌数均高于通道。结论：密闭坑道空气处于静态，通风与房间空气微生物浓度无规律性变化，半密闭及通风坑道的房间位于通道两侧，通风不良，空气微生物含量均高于通道。
Objective: To understand the condition of microorganisms in the air under tunnel ventilation and protect the health of the occupants. Methods: The sedimentation method was used to monitor the airborne bacteria in the tunnel and the room. Results: The average number of anaerobic bacteria in the tunnel and the room was 3288CFU · m-3 and 3538CFU · m-3, respectively, which were significantly higher than those in the control. The total number of airborne bacteria and fungi , The number of anaerobic bacteria compared with the control, the former P <0.05, the latter P <0.01; the total number of air bacteria and fungi in the ventilation tunnel room were higher than the channel. Conclusion: The air in the confined tunnel is in static state, and the concentration of air and air in the room varies irregularly. The rooms of semi-airtight and ventilation tunnel are located on both sides of the tunnel with poor ventilation and higher airborne microorganism content than the tunnel.