Research On Layout Optimization Of Based Smoke Simulation ASD Sampling Probe In The Subway

It is great convenience for people to travel because of the high-speed development of thesubway, at the same time, the subway accident occurs frequently. It not only affects people’stravel, but also threats to the people’s lives and property losses. The subway fire accidentsoccur most frequently and affect one of the most serious accidents. Subway platform islocated in the deepest subway station. When a fire occurs, it is very time-consuming anddifficult for people to evacuate and difficult to enter for firefighters, so it is particularlyimportant to prevent fire accident in the subway platform. It is able to discover the early firefor people to evacuate early using fire detectors. It is our expected to select a reasonablyeffective fire detector to detect fire. Aspiration smoke detector with a low false alarm rate,timely alarm and discovering in the very early fire is being widely used in the subway.In order to play to the superiority of the aspirated fire detectors in the subway, it isnecessary to optimize the detector layout reasonable. Firstly, according to subway fire load ofthe position to divide its zoning and analysis fire risk, and according to the principle ofmaximum possible to identify the fire occurs most likely area or the most serious regional thatthe impact and the loss occurred after a fire. Secondly，Based on the actual size of a citysubway station, we create a physical model using the computer simulation software PyroSimto analysis the factor that impacting the fire-smoke movement, simulate the fire smoke flowand analysis smoke spread track trends. According to the fire smoke development trajectoryand fire alarm system design specifications to design a scientific and rational layout of thedetector.