Rapid dust falling device and method for tunnel construction
A dust suppression device and tunnel construction technology, applied in safety devices, dust prevention, earth-moving drilling and other directions, can solve the problems of inability to meet the requirements of tunnel construction environment, endanger the health of tunnel construction workers, and generate a large amount of toxic and harmful gases, etc. The effect of waiting time for dust reduction, shortening dust reduction time, and avoiding close contact with dust
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[0042] Example
[0043] In the dust reduction process of this embodiment, the GCG1000 dust concentration sensor synchronously feeds back the dust detection concentration to the electronic control device 13. The electronic control device 13 compares the detection concentration with the dust concentration setting value (6mg / m3). When the value is greater than the set value, the dust suppression device is controlled to spray water for 50s every 1 min. When the detected concentration is greater than 50% of the set value, the dust suppression device is controlled to spray water for 30 seconds every 2 min. When the detected concentration is less than 50% of the set value, The electronic control device 13 controls the solenoid valve 14 to automatically close. According to the difference of the dust concentration near the tunnel face, the electronic control device 13 can automatically adjust the second dust reduction device 8 and the air-driven dust reduction device 10 according to differ...
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