光纤光栅感温隧道火灾探测技术的应用研究

摘要

Tunnel fire alarm system is a key link to ensure the safe operation of expressway in our country,because of the request of fast response time of the alarm system,long transmission distance but the existing fire detection,fire detection method is difficult to meet the demand.This paper relies on Hurongxi expressway construction projects,focusing on the development of fiber optic grating heat detectors system suitable for large tunnel (Group)engineering application and in accordance with the optical fiber grating technology standard.Aiming at the features and difficulties of the design of the tunnel fire detection,multi region wave division multiplexing FBG tunnel fire detection and alarm sys-tem is designed,the system development and installation of debugging is also completed.After the ig-nition experiment is successfully completed in the tunnel,the installing ignition experiment in Hu-rongxi entity tunnel accomplished acceptance.%隧道火灾报警系统是保障高速公路安全运行的重要环节，但是火灾探测报警系统要响应时间快、传输距离远，现有的火灾探测方法很难满足其需求。文中依托沪蓉西高速公路建设项目，开发适合大型隧道（群）工程应用并符合技术标准的光纤光栅感温火灾探测系统，针对隧道火灾探测的特点和难点，设计了多区波分复用的光纤光栅隧道火灾探测报警系统，完成系统的开发和安装调试，在成功完成实验隧道的点火实验后，安装在沪蓉西实体隧道中进行点火实验完成验收。