Adjustable intelligent feeding and discharging type ventilation system for double-track tunnel

Abstract

The invention relates to an adjustable intelligent feeding and discharging type ventilation system for a double-track tunnel. The adjustable intelligent feeding and discharging type ventilation system comprises an up-down tunnel shared air supply hole, an up-down tunnel shared air exhaust and smoke exhaust hole, an up-down tunnel shared air supply duct, an up-down tunnel shared air exhaust and smoke exhaust duct, an air supply adjusting baffle and an air exhaust adjusting baffle. The air flow power is provided by an air exhaust and smoke exhaust machine and an air supply fan which are positioned in a fan room; the exhaust adjusting baffle is arranged at the joint of a downstream exhaust short lane and the up-down tunnel shared air exhaust and smoke exhaust duct. The air supply adjusting baffle is arranged at the joint of a downstream air supply short lane and the up-down tunnel shared air supply duct. An air volume detector monitors the up-down air supply and exhaust volume, an adjustable intelligent ventilation system of the double-track tunnel is achieved, the up-down tunnel shared air supply duct and the up-down tunnel shared air exhaust and smoke exhaust duct form a ventilation inclined shaft, and the up-down tunnel shared air supply duct and the up-down tunnel shared air exhaust and smoke exhaust duct are separated through a metal air duct partition plate. One ventilation inclined shaft is utilized in the whole air supply and exhaust process, and a large amount of engineering cost is saved.

Description

technical field [0001] The invention relates to the technical field of tunnel ventilation structures, in particular to an adjustable and intelligent ventilation system for two-lane tunnels. Background technique [0002] With the rapid development of highway construction in our country, great progress has been made in tunnel design and construction technology, and a number of extra-long tunnels with a length of more than 5km have appeared. It has become a consensus to set up ventilation shafts or inclined shafts in super-long highway tunnels to increase the applicable length of longitudinal ventilation. It provides fresh air, and can also be used to exhaust smoke in the event of a fire, shortening the journey of fire smoke in the tunnel. However, how to provide the necessary fresh air with relatively low energy consumption is the key issue for the safe and economical operation of super-long tunnels, and the selection of ventilation methods and the design of disaster preventi...

AI Technical Summary

Problems solved by technology

However, how to provide the necessary fresh air with relatively low energy consumption is the key issue for the safe and economical operation of super-long tunnels, and the selection of ventilation methods and the design of disaster prevention systems are also extremely critical technical issues. It not only directly affects the construction investment of the tunnel, but also affects the environment and operation safety in the tunnel to a large extent.

[0003] The traditional ventilation method for double-lane tunnels has the following two disadvantages: (1) Due to the high operating costs of the fans, in general, the normal operating power of the fans only meets the basic environmental safety conditions in the tunnel; (2) In a certain In some cases, the environmental conditions of the two tunnels are different, and the corresponding air supply and exhaust power is required. However, due to the relatively independent relationship between the air supply and exhaust between the two-line tunnels and the disadvantage of a fixed ratio of air supply and exhaust, the fans cannot compensate each other. Exhaust air, when a disaster or other special circumstances occurs in a certain uplink or downlink tunnel, the fan of the other tunnel cannot be effectively used to supply and exhaust air to increase the safety and stability of tunnel ventilation

Images