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With the rapid development of underground space technology in China, the construction of tunnel caverns is increasing. Good air quality in the tunnel is not only necessary for labor safety, but also to create a good construction environment conditions, improve work efficiency, speed up the construction of an important guarantee. The complex construction in the caverns, resulting in a large number of dust will flow to other caves, not only affect the cavern, but also on the other cave caused secondary pollution, affecting its normal construction operations. However, the cavern group construction work, just rely on the traditional single tunnel construction ventilation technology is obviously unable to meet the dust group requirements. Therefore, the study on the distribution of dust in the construction of the caverns is of great significance to improve the dust control work.

Simulation study on dust concentration distribution of single channel cavities construction