Study on FDS Simulation of Fire Suppression Effectiveness by Fine Water Mist in Underground Passage

Fire extinguishing system in underground passage is strictly required by its particularity. Fine water mist, as a kind of modern fire extinguishing technology, is widely used in fire fighting in underground passage. Effectiveness of fire suppression by fine water mist in underground passage at a commercial district in Chengdu is validated by FDS simulation. Combination of fine water mist fire extinguishing technology with mechanical smoke extraction can achieve the best fire suppression effect.