A method for air volume distribution control using an air volume distribution control device for a long tunnel ventilation system

Abstract

Provided is a distribution control device for an air quantity of a long tunnel ventilating system. A front branch pipe and a rear branch pipe of a ventilator on a parallel adit or an auxiliary tunnel portal leading to a front tunnel face and a rear tunnel face of a main tunnel are respectively provided with a front solenoid valve and a rear solenoid valve, the front solenoid valve and the rear solenoid valve are electrically connected with a control processing center, and the ventilator is also electrically connected with the control processing center. A front gas concentration detector, a front dust concentration detector, a front carbon monoxide concentration detector and a front hydrogen sulfide concentration detector which are electrically connected with the control processing center are arranged beside the front tunnel face; and a rear gas concentration detector, a rear dust concentration detector, a rear carbon monoxide concentration detector and a rear hydrogen sulfide concentration detector which are electrically connected with the control processing center are arranged beside the rear tunnel face. The distribution control device can automatically adjust and control ventilation quantity of air fed to the front tunnel face and the rear tunnel face according to pollution conditions of the front tunnel face and the rear tunnel face of the main tunnel, can simultaneously guarantee ventilation effect of the two tunnel faces and is good in ventilation effect; and energy waste is also avoided.

Description

technical field [0001] The invention relates to an air volume distribution system of a long tunnel ventilation system and a control method thereof. Background technique [0002] Due to the closed nature of the tunnel structure, exhaust gas generated by mechanical operations during tunnel construction, gunpowder smoke generated by blasting, and toxic and harmful gases overflowing from the formation will accumulate in the tunnel, threatening the health of workers and construction safety. In order to improve the working environment of highway tunnel construction and protect the health of construction workers, appropriate ventilation measures must be taken. Especially for gas, H 2 For special dangerous tunnels where toxic and harmful gases such as S exist, sufficient ventilation and wind speed must be ensured to dilute the toxic and harmful gases. [0003] As a basic means to prevent and control gas disasters in gas tunnel construction and realize safe production, construction...

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Problems solved by technology

[0006] The problem with the above ventilation method is: the air supply volume of the front and rear face is fixed, but the required air volume of the front and rear face is not the same, and it is constantly changing, resulting in or unable to ensure the air flow of the two face at the same time. Ventilation effect, or cause energy waste

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