1. The fire resistance of underground works, entrances and exits, and ventilation booths of the subway is Grade I. ..
2, the underground station management room should be arranged at one end. There should be a safety exit to the ground in the management room area, and the pedestrian stairs between the station hall and the platform in this area should be closed stairwells.
3. When the subway is connected with underground buildings such as underground and above-ground shopping malls, fire separation facilities must be taken.
4. The passenger evacuation area of underground station platform and station hall should be divided into a fire zone. The maximum allowable use area of other fire zones should not be greater than1500 ` m 2. The ground station should not be greater than 2500 square meters.
The two fire zones are separated by a firewall with a fire resistance limit of 4h and a Class A fire door. When the firewall is equipped with observation windows, Class C and Class A fire-proof glasses should be used.
Note: The areas of fire pump house, sewage pump house, reservoir, toilet and washroom may not be included in the fire zone area.
5. The driving duty room of the underground station or the station control room, substation, power distribution room, communication signal room, ventilation and air conditioning room, fire pump room, fire extinguishing agent gas cylinder room and other important equipment rooms should be separated from other parts by partition walls with fire resistance of not less than 3h and floor slabs with fire resistance of not less than 2h, and the building ceiling should be made of incombustible materials. The doors and windows on the partition wall adopt Class A fire doors and Class A fire windows.
6. At the stairs between the station hall and the platform, a smoke-proof vertical wall should be set, and the vertical distance from the lower edge of the smoke-proof vertical wall to the stair tread surface should not be less than 2.3m.
7. Non-combustible materials should be used for the passenger distribution parts such as station platforms, station halls, entrance and exit stairs, evacuation passages and closed stairwells, as well as the decoration materials for equipment and management rooms, their walls, floors and tops, as well as advertising light boxes, seats, telephone booths, ticket kiosks and other materials. At the same time, asbestos, glass fiber products and plastic products should not be used for the decoration materials.
8. When the gap between the fire shutter and the building components and the pipes, cables and air ducts pass through the firewall, floor and fire partition, the gap shall be filled with fire-proof sealing material. And should reach the fire resistance limit of the fire zone.
9, the underground station fire partition (densely populated areas) exit settings shall meet the following requirements:
(1) There should be at least two fire exits in the fire compartment of the station platform and the station hall, and they should be directly connected with the space outside the station.
(2) There should be no less than two fire exits in other fire zones, and one of them should be directly connected with the external space. Fire doors communicating with adjacent fire zones can be used as second safety exits. The entrances and exits of well ladders and vertical elevators shall not be used as safety exits.
(3) Underground commercial and other public places related to the station, as well as the safety exits leading to the ground, shall comply with the current fire protection code for building design.
10, any point in the public area of the platform shall not be more than 50m away from the evacuation stairs or access openings. Stairs should be set at both ends of the platform to reach the interval.
1 1. Evacuation doors should be set at the fences of the paid and non-paid areas in public areas.
12. Under normal circumstances, the evacuation capacity of stairs and escalators used for personnel evacuation is calculated at 90%.
13. The width of exit stairs and evacuation passages shall ensure that all passengers on the train and passengers and staff waiting on the platform can evacuate from the platform within 6 minutes in case of fire during long-term peak passenger flow.
14, the setting of emergency exits, stairs and evacuation routes shall meet the following requirements:
(1), the width of exit stairs and evacuation passages for personnel evacuation shall be calculated according to the relevant provisions of the station building in Chapter 8 of this specification.
(2) The minimum clear width of the exits, stairs and evacuation passages of the station equipment and management room area shall meet the following requirements: (1) The exits and stairs of the subway station equipment and management room area shall be1.0m; ; 1.2m； Arrange the evacuation passage of the room for one side; The evacuation passage of the double-sided room is1.5m..
(3) The distance between the auxiliary door of the equipment and management room and the nearest safety exit shall not exceed 35m, and the maximum distance between rooms located on both sides or at the end of the closed passage shall not exceed 1/2 of the above distance.
15, and the length of underground passage shall not exceed 100m. If it exceeds, measures shall be taken to meet the fire control requirements for personnel evacuation.
16. When the tunnel coherence length between two single-track tunnels is more than 600m, a communication channel should be set, and Class A fire doors with bidirectional opening should be set at both ends of the channel.
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