Top vertical shaft natural ventilation tunnel model and fire test method thereof

Abstract

The invention relates to a top vertical shaft natural ventilation tunnel model and a fire test method thereof. The top vertical shaft natural ventilation tunnel model is formed by the connection of tunnel model units, and each tunnel model unit comprises a stable structure body, a top plate, vertical shaft basic structure bodies, vertical shaft inner spacing plates and set spacing plates, wherein the stable structure body is used for stabilizing whole model test equipment, the top plate, the vertical shaft basic structure bodies and the set spacing plates are installed at the top of the stable structure body, the stable structure body is matched with the top plate to form a relative sealed space structure to simulate a tunnel, and the vertical shaft basic structure bodies are used for being assembled to vertical shafts with different heights to achieve ventilation; the set spacing plates are used for changing the spacing of the multiple vertical shaft basic structure bodies, vertical shaft spacing plates are installed in the vertical shaft basic structure bodies, and the width of a vertical shaft can be changed. The top vertical shaft natural ventilation tunnel model and the fire test method thereof have the advantages that the repetitive rate of small size tunnel fire model test can be effectively improved; the influence on the natural smoke exhaust of the vertical shaft can be fully considered when the vertical shaft size parameter changes.

Description

technical field [0001] The invention relates to a tunnel model and a fire test method thereof, in particular to a top shaft natural ventilation tunnel model and a fire test method thereof. Background technique [0002] The comprehensive development of urban underground space is an important measure to solve the three major problems of urban population, resources and environment. The use of urban tunnels is an important way to effectively utilize underground space and relieve urban traffic pressure. At present, most tunnels in my country use mechanical ventilation. Under the background of energy shortage and reducing energy consumption have become the basic national policy, the top shaft natural ventilation tunnel adopts shaft natural ventilation technology, which can effectively alleviate the tense situation of urban traffic demand. The top shaft natural ventilation tunnel is used in urban traffic, and has the characteristics of low energy consumption, low cost, low mainten...

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Problems solved by technology

However, there are many factors affecting natural smoke exhaust from shafts, such as shaft width, height, quantity, group spacing, etc., to carry out com

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