Tunnel Solutions

   Tunnels refer to engineering buildings buried in the ground and are a form of human utilization of underground space. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels, military tunnels, etc.Traffic tunnels are the type of tunnels most closely related to human social life and production activities. They are mainly used for the passage of people, motor vehicles, trains, ships, etc. According to their functions, they are divided into road tunnels, railway tunnels, urban underground railway tunnels, and shipping tunnels. Tunnels and pedestrian subways, etc.

  Fire hazards in tunnels:The spatial characteristics of tunnel buildings, vehicles and their modes of transportation not only determine the difference between the dangerous consequences of tunnel fires and fires in general industrial and civil buildings, but also determine the differences between fires in different tunnels. In addition to casualties and direct economic losses, the harmful consequences of tunnel fires include unique secondary disasters and indirect losses, which are even more serious than the former's impact on society, life and regional economy.

  Characteristics of tunnel fires:The fire is violent and sudden. It is difficult for people to evacuate and escape, and vehicles and cargo are difficult to evacuate and protect. The smoke is large, the visibility is low, and the smoke exhaust effect is poor. Fire types are diverse and rescue is difficult. It is easy to explode, burn and collapse. The terrain is complex and fire-fighting forces cannot be deployed.

Tunnel fire protection facilities

       Fire alarm system:Fire alarm systems generally consist ofFire alarm controller, three-band infrared flame detector/dual-band infrared flame detector, optical fiber or temperature sensing cable, manual alarm button and audible and visual alarm, etc.constitute.

       fire hydrant system：The tunnel fire hydrant system and the building fire hydrant system are not much different in system composition.It consists of fire pipelines, indoor fire hydrant equipment, fire booster pumps, fire pressure stabilizing pumps, fire pools, outdoor fire hydrants, fire hydrant adapters, fire hydrant buttons (i.e., fire start buttons), etc.. The main difference lies in the slight difference in water pressure and water supply methods between the two.

       Aqueous film-forming foam fire extinguishing system：Foam fire extinguishing systems generally consist of system components such as foam liquid storage tanks, foam fire pumps, foam proportioning mixers (devices), foam generating devices, fire detection and start-up control devices, control valves and pipelines.It is equipped with monomer aqueous film-forming foam supply equipment, mobile foam guns, etc., and fire extinguishing devices used in conjunction with the fire hydrant system, mainly used to extinguish fires caused by automobile fuel.

       High pressure water mist fire extinguishing system:The high-pressure water mist fire extinguishing system generally consists of a high-pressure main pump, a backup pump, a voltage stabilizing pump, a solenoid valve, a filter, a pump control cabinet, a water tank component, a water supply pipe network, a regional valve box component, a high-pressure water mist nozzle and a fire alarm control System, water replenishing pump and other components.