铁路隧道除尘技术及标准的研究与应用

Research and Application of Dust Removal Technology and Standards for Railway Tunnels

铁路隧道内过量的粉尘，不但会影响司机瞭望、危害人员健康，还会引起设备故障频发，因此，隧道除尘工作十分重要。为确保铁路隧道除尘工作的顺利进行，应选择有代表性的新建铁路隧道、既有线铁路隧道，进行隧道灰尘标准制定、隧道除尘设备功能性能界定、隧道除尘定额测定，并纳入相关规范。研究结果表明：（1）通过试验测试，隧道联调联试除尘标准可规定为每立方米空气中粉尘含量为1-2mg；（2）隧道除尘工作在铁路联调联试前进行，无砟轨道型式的隧道采用三步作业除尘法，有砟轨道型式的隧道采用四步作业除尘法。运营期主要采用除尘车进行除尘。

Excessive dust in railway tunnels could block the driver＇s view, do harm to peoples＇ health, and cause frequent equipment failure, and tunnel dust removal is therefore very important. In order to ensure smooth dust re- moval in railway tunnels, typical examples of new railway tunnels and existing railway tunnels shouht be selected for the establishment of tunnel dust standards, the functional performance definition of tunnel dust-cleaning apparatus and the tunnel dust norm measurement for incorporation into relevant specifications. Test results show that： 1） tunnel dust removal standards in the joint debugging and commissioning can stipulate that dust content in every cubie meter of air is 1-2 rag; and 2） dust removal in the tunnel should be done before railway debugging and commission ing, with a threestep operation method of dust removal adopted for ballastless track tunnels and a four-step operation method adopted for ballasted track tunnels. Dust-cleaning vehicles are usually used during the operational period.