瓦斯隧道通风在线监测与动态分析预警

On-line Monitoring,Dynamic Analysis and Early Warning of Gas Tunnel Ventilation Status

瓦斯隧道通风控制系统是利用自动瓦斯监测系统对隧道内施工环境进行监测和对通风设备运行状态进行控制,在实时检测隧道内CH_4、CO、风速、温度等参数的基础上,将这些数据传送到地面监控室的计算机,计算机再以检测到的环境参数为依据,对瓦斯隧道内通风状况进行动态分析与预警,为实时掌握瓦斯隧道通风安全状况提供技术手段,提高瓦斯隧道施工通风的管理水平,从而保证隧道施工安全有效地进行。文章以兰渝铁路梅岭关隧道为例,介绍了瓦斯隧道的施工通风方案、通风系统检测、通风安全预警以及瓦斯监测系统的的现场应用。

The purpose of ventilation monitoring systems in gas tunnels is to monitor the construction environment, control the operating conditions of ventilation equipment, and to transmit data to a computer in a control room based on real-time monitoring of CH4, CO, wind velocity, and temperature. Ventilation conditions in the gas tunnel are analyzed and an early warning is given if necessary. This paper introduces the ventilation scheme, ventilation system control, and early safety warning as well as the site application of the gas monitoring system of the Meilingguan tunnel on the Lanzhou-Chongqing railway.