特长隧道泡沫-水喷雾联用消防系统设计研究

Study on Design of Foam-Water Spray Combined Fire Protection System for Extra-Long Tunnels

摘要:

对于城市特长隧道，消火栓、灭火器等常规消防设施应用已较为成熟，但自动水灭火系统的设计标准与工程实践仍较为不足。以滨海东大道隧道为工程背景，依据现行消防规范，结合方案比选、理论计算与布局优化，开展泡沫-水喷雾联用消防系统专项设计研究，完成系统选型、参数取值、喷头及阀组优化布设，确定管网管径与流速控制指标，开展消防水泵、稳压泵水力计算。总结适配特长隧道的成套设计思路，明确核心控制要点，可为同类隧道消防设计提供工程参考。

Abstract:

For urban extra-long tunnels, conventional fire facilities such as hydrants and fire extinguishers are widely applied, while the design standards and engineering practices of automatic water extinguishing systems are still insufficient. Taking Binhai East Avenue Tunnel as the engineering background, the special design of foam-water spray combined fire protection system is carried out in accordance with current fire protection codes and combined with scheme comparison, theoretical calculation and layout optimization. The system selection, the parameter setting, and the optimized layout of nozzles and valve groups are completed. The pipe network diameter and flow velocity indexes are determined. And the hydraulic calculation of fire pumps and pressure stabilizing pumps is conducted. Summarizing the complete set of design ideas suitable for extra-long tunnels and clarifying the core control points can provide engineering references for the fire protection design of similar tunnels.