Tunnel construction ventilation monitoring system

Abstract

The invention discloses a tunnel construction ventilation monitoring system. The tunnel construction ventilation monitoring system comprises a smoke dust concentration meter arranged on the peripheral side of a face of a tunnel under construction, a harmful gas concentration detection unit arranged on the peripheral side of the face of the tunnel under the construction, an air speed monitor used to detect air speed at a pipe orifice of a flexible air pipe installed in the tunnel under the construction, an air pipe orifice size automatic regulating device which moves back and forth along the longitudinal extension direction in the tunnel under the construction, an upper monitor machine arranged on the outer side of the tunnel under the construction and a handheld remote control terminal carried by a tunnel ventilation constructor, wherein the smoke dust concentration meter, the harmful gas concentration detection unit and the air speed monitor are all connected with the upper monitor machine. The tunnel construction ventilation monitoring system is simple in structure, reasonable in design, simple and convenient to use, and good in use effect, can automatically monitor concentration of blasting fume and harmful gas around the face of the tunnel, and can correspondingly adjust the size of the pipe orifice of the flexible air pipe according to a monitor result so as to correspondingly adjust the air speed at the pipe orifice of the flexible air pipe.

Description

technical field [0001] The invention belongs to the technical field of tunnel ventilation construction, and in particular relates to a tunnel construction ventilation monitoring system. Background technique [0002] As we all know, ventilation in tunnel construction is a key process. Its function is to deliver enough fresh air from outside the tunnel to the inside of the tunnel, and to discharge the gun smoke and harmful gases generated by blasting and transportation in the tunnel, so as to finally ensure the safety of the workers and machinery in the tunnel. The need for fresh air makes the air in the cave meet the standards stipulated by the state and industry. The quality of the ventilation effect in the construction of long tunnels directly affects the progress of the project and the health of the workers. At present, the tunnel construction ventilation at home and abroad mostly adopts the pipeline press-in ventilation method, and an axial flow fan is installed outside ...

AI Technical Summary

Problems solved by technology

To sum up, there is a lack of a tunnel construction ventilation monitoring system with simple structure, reasonable design, easy processing, easy operation and good use effect, which can automatically monitor the concentration of gun smoke and harmful gases near the tunnel face, and According to the monitoring results, the size of the opening of the flexible air duct can be adjusted accordingly, so as to adjust the wind speed at the opening of the air duct accordingly

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