奎先运营隧道空气质量卫生学评价

Appraising from Occupation Hygiene Quality of Air in KuiXian Railway Tunnel

目的 为摸清当前车流密度下各不同工况内燃机废气分布规律、自然本底及意外状态下可产生的危害。项目 在奎先隧道内进行了空气中CO、NOx、CO2 及 O2 的测定。结果 列车在正常运营状态下产生的 NOx 峰值为 80 .9mg/m3,CO为112 mg/m3,有害气体多集中于 3、4测点。通过调查见 ,空气质量受车流密度的影响。车速对 NOx 影响不明显 ,而对 CO的影响较大 ,由于风向的变化 ,使隧道内有害气体形成涡流或紊流 ,使 3测点出现多次高峰 ,由此可见 1、5测点有害气体峰值滞后 ,自然排净时间长于第 3测点。

Objective:Study reqular distribution natural background and endanger of accidents of waste gas from diesal locomotive in KuiXian railway tunnel.Methods:Measure CO\,NO x \,CO 2 and O 2 in KuiXian railway tunnel air.Results:The peak of NO x \,CO was 80 9 mg/m 3 、112 mg/m 3 of train normal transport,and it has focused third and fourth point.Quality of air was influenced by the density train.CO was influenced by the train speed.Poisonous gas has eddy current or disorder and third point often has peak,since the wind direction has changed.Conclusion:Quality of air must be put in order in KuiXian railway tunnel.