A lot of harmful gases and dust will be produced during underground construction process. In exca-d vation site, the amount of respirable dust(<7.07μm)is as high as 2000mg/m³(the national standard is less than 8mg/m3), and contains high amount of crystalline silica, which has a bad effect on the staff working on the site.

The dust and noxious gas produced are conducive to the equipment operation and maintenance, thus seriously delay the project schedule. Underground space environment management directly affects the construction period, even the whole project. A good engineering route selection, design and engineering management can greatly shorten the construction duration.

The application of ADEKOM high-efficiency VFD energy-saving fans, leak-proof air ducts, deduster on working surface and intelligent control systems can effectively ensure safety, economy and improve overall efficiency.