Shenzhen Metro is a city service in Shenzhen, Guangdong Province, China. On December 31, 2024, the total passenger volume of Shenzhen's urban rail transit across 18 operational lines reached 11.8849 million trips, with an entry volume of 6.62 million. The Shenzhen Metro Group's 16 operational lines, including tram services, recorded a total passenger volume of 10.889 million trips, both setting new historical records for highest passenger traffic.
Fire-Rating Railway Specialized Doors in Shenzhen Metro System Technology Overview,
① Application Areas & Positioning
Fire-rating partition doors are strategically deployed across Shenzhen Metro’s network to compartmentalize hazards and ensure passenger safety:
Station Halls & Platforms:
Installed between ticket halls, retail zones, and platforms (e.g., Check-in Halls at Shenzhen Hospital of Traditional Chinese Medicine Station, Guangming District) to prevent smoke/fire spread during emergencies.
Boarding Gates: Equipped with stainless steel fire-smoke barriers (FYM/FMM types) to isolate passenger flows from mechanical rooms.
Evacuation Paths:
Pressurized Stairwells: Class-B fire doors (≥60 min rating) maintain smoke-free egress routes (e.g., Geju Yuan Station, Nanshan District).
Corridor Links: Separate retail/dining areas from emergency exits using fire-resistant glazed doors (FC-type).
Technical Compartments:
HVAC/Electrical Rooms: Protected by Class-A fire doors (FM-type, ≥90 min rating) to contain utility-induced fires.
unnel Intervals: Carbon steel tunnel protection doors (e.g., Line 5, Line 13) isolate operational zones, withstanding typhoon-force winds and explosions.
② Critical Functions
Fire/Smoke Containment:
Confine flames/toxic gases within origin zones (60–240 min integrity per GB 12955-2008).
Intumescent seals expand at 200°C+ to seal gaps ≤3mm, blocking smoke diffusion.
Evacuation Assurance:
Integrate with illuminated door boundary stones (HH-DT-210230 models) that auto-glow during power failures, guiding escape routes.
Electromagnetic hold-open devices allow peak-hour traffic flow; auto-close ≤30 sec post-alert.
Structural Resilience:
Withstand train collisions/explosions via Whipple-structure doors (multi-layer aluminum/aramid fiber composites).
③ Product Specifications & Features
Material & Structural Design
Core Construction: Stainless steel (304-grade) or carbon steel frames (1.2–1.5mm thickness) with rock wool/mineral wool insulation.
Fire/Blast Resistance:Triple-layer "sandwich" structure
Outer Layers: Flame-retardant aluminum alloy.
Middle Layer: Woven aramid/carbon fiber (absorbs shock, fragments projectiles).
Ceramic-fired fire-resistant glass (e.g., 6mm fire glass + 12A air gap + 6mm tempered glass) for visibility and thermal insulation.
④ Intelligent Systems
Auto-Closing Mechanisms: Hydraulic closers for single doors; sequential closers + flush bolts for doubles.
IoT Integration: Pre-installed conduits for real-time monitoring of door status (open/closed/temperature) via BMS.
⑤ Certifications & Performance
Compliant with GB 12955-2008 Class A/B and GJB2805B-2021 (military-grade blast resistance).
Environmental Resilience: Powder-coated finishes resist humidity-induced corrosion (critical for coastal Shenzhen).
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