Abstract: The entry of coal-carrying trains into tunnels can cause turbulence in the airflow within the tunnels, causing coal dust or scattering. Designing a reliable environmental monitoring system for coal-carrying railway tunnels during train passage, which can monitor the wind field and the rules of dust changes in real time, is of significant importance for developing efficient measures to control dust and reduce the spillage of coal resources. According to the application requirements, a railway tunnel environmental information monitoring system was implemented by using gigabit ethernet and 4G network, and the overall scheme design and network architecture were completed. Control cabinets with data acquisition and support for ethernet data transmission interface were developed to meet the signal acquisition requirement of 10 Hz. The real-time storage program of on-site industrial computer and the monitoring software of upper computer based on Ali-Cloud platform were developed, which were applied to the engineering site, realizing local data storage and remote monitoring functions. By analyzing the basic laws of airflow movement and dust pollution during train passing, the basic transformation laws of wind field and dust signals during train passing were obtained. On-site applications show that the proposed system runs stably and reliably and meets the requirements of engineering applications. The application of the proposed system can provide data support for dust suppression in coal transportation tunnels.

Key words: traffic and transportation engineering; railway tunnel; environmental parameter monitoring; Ali-Cloud; Socket

摘要： 运煤列车进入隧道会引起隧道内风流紊乱，造成煤炭扬尘或撒落。设计可靠的运煤铁路隧道过车环境监测系统，实时监测隧道内风场和扬尘变化规律，对制定高效的控制扬尘和减少煤炭资源撒落措施具有重要的意义。根据应用需求，利用千兆以太网和4G网络进行组网，实现了一种铁路隧道环境信息监测系统，完成了整体方案设计和网络架构；研制了数采且支持基于以太网数传接口的控制柜，满足了频率10 Hz的信号采集需求；开发了现场工控机实时存储程序和基于阿里云平台的上位机监测软件，并应用于工程现场，实现了数据本地存储和远程监测功能，通过对过车时风流运移和扬尘污染基本规律进行分析，得到了列车通过时风场和粉尘信号的基本变换规律。现场应用表明：系统运行稳定可靠，满足工程应用需求，系统的应用可为运煤隧道粉尘抑制提供数据支持。

关键词: 交通运输工程；铁路隧道; 环境参数监测; 阿里云; Socket