A simulated experimental device for fire and smoke exhaust in subway transfer stations

Abstract

The invention discloses a metro interchange station fire disaster smoke discharge simulation experiment device which consists of a metro interchange station body model and a smoke discharge system. A station hall layer smoke discharge mechanism is same as a first-floor-underground smoke discharge mechanism in structure, and each smoke discharge mechanism consists of more than three parallel smoke discharge units. Each smoke discharge unit includes more than two straight smoke pipes, more than two m-shaped smoke pipes or more than two n-shaped smoke pipes. A second-floor-underground smoke discharge mechanism comprises more than three L-shaped smoke pipes and more than two smoke pipes in shapes of Chinese characters 'feng'. Carbon monoxide concentration measurement probes, smoke flow speed measurement probes and thermocouples uniformly distributed in a station form a smoke plume flow characteristic parameter measuring mechanism. Fire disaster detection mechanisms are arranged on a ceiling of a metro tunnel. The special metro interchange station fire disaster smoke discharge simulation experiment device can be used for researching smoke optimization control schemes and fire detection characteristics when a metro interchange station fire disaster occurs.

Description

technical field [0001] The invention belongs to the technical field of fire safety, and in particular relates to a simulation experiment device for testing the optimization control and fire detection of fire smoke in subway transfer stations. Background technique [0002] In recent years, subways are often called "green transportation" because of their advantages such as large capacity, punctuality, convenience, and less pollution. They are becoming more and more popular and developing rapidly. As the lifeline of a modern city, the subway is an important part of the three-dimensional transportation network of a modern city. At present, 33 cities across the country are planning subway construction. It is estimated that the total mileage of planned subways will reach 6,100 kilometers in 2020. The planned investment in subway construction from 2010 to 2015 will reach 1,156.8 billion yuan, which will be 5.93 times that of 2010. Many station buildings are majestic and magnificen...

AI Technical Summary

Problems solved by technology

Full-scale experiments require a lot of manpower, material and financial resources, and the research period is relatively long. At the same time, due to the complexity of the boundary conditions of actual fires, the reproducibility of full-scale fire experiments is poor; therefore, a large number of scholars mainly use small-scale models. , and introduce the idea of ​​similar theory to conduct research, the small-scale test has the advantages of easy manipulation, good reproducibility and high reliability of measurement results

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