Fire ventilation and smoke exhaust experimental simulation device based on urban underground traffic linkage tunnel system

Abstract

The invention discloses a fire ventilation and smoke exhaust experimental simulation device based on an urban underground traffic linkage tunnel system. The fire ventilation and smoke exhaust experimental simulation device comprises a simulation fire source device, a tunnel longitudinal smoke exhaust control optimization device, a fire detection device, a multi-feature parameter measurement device and a tunnel slope adjustment device. The fire ventilation and smoke exhaust experimental simulation device consists of four single hole tunnels, the fire ventilation and smoke exhaust experimental simulation device is placed in directions of up-north, lower-south, left-west and right-east, and an underground parking garage is arranged in the center; the fire ventilation and smoke exhaust experimental simulation device is provided with an emergency escape door, model vehicles, an inlet jet blower, an outlet jet blower, axial flow fans, jet flow fans and smoke exhaust ports; a plurality of the axial flow fans and a plurality of the jet flow fans are respectively arranged on walls and upper ends of the tunnels of the simulation device; and the slope of the tunnel device can be adjusted. The fire ventilation and smoke exhaust experimental simulation device can simulate fire smoke characteristics and fire detection performance of the urban underground traffic linkage tunnels, and provides a research platform for acquiring reasonable fire smoke control schemes and smoke exhaust effect of the urban underground traffic linkage tunnels.

Description

technical field [0001] The invention relates to the fire safety field of urban underground traffic connection tunnels, in particular to a fire ventilation and smoke exhaust experimental simulation device based on urban underground traffic connection tunnel systems. Background technique [0002] With the rapid development of economy and society, the transportation industry at home and abroad is developing rapidly. Various types of tunnels have emerged, such as subsea tunnels, public-rail tunnels, and urban underground traffic connection tunnels. Urban underground traffic connection tunnels are generally built in urban CBD business districts, which can effectively alleviate traffic congestion and make full use of environmental resources. In recent years, tunnel fire accidents have occurred frequently at home and abroad, causing heavy casualties and property losses to the country and society. Compared with ordinary tunnels, the structure of underground traffic connection tunn...

AI Technical Summary

Problems solved by technology

If the smoke control and optimization cannot be done properly, resources will be wasted

[0006] (2) The slope problem of urban underground traffic connection tunnel increases the complexity and difficulty of smoke exhaust

[0007] (3) It is difficult to determine the critical wind speed for longitudinal smoke exhaust of underground traffic connection tunnels in the city center

Furthermore, in the smoke control scheme of underground circular traffic tunnels, whether the longitudinal wind speed in the tunnel must be greater than the critical wind speed remains to be further studied experimentally.

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