| 摘要 |
PROBLEM TO BE SOLVED: To provide an effective and appropriate ventilation system for tunnel construction which achieves a sufficient ventilation effect with a simple facility.SOLUTION: A ventilation system for tunnel construction collects dust with a dust collection machine 2 by taking in air inside a tunnel through an intake port 4 arranged at a position close to a working face 1 and supplies fresh air to the inside of the tunnel through an air supply port 7 arranged at the position closer to a pit mouth than the intake port 4. In the ventilation system, a dust-proof bulkhead 8 is installed at the position closer to the pit mouth than the air supply port 7 to separate the inside of the tunnel into a working face side and the pit mouth side. The dust-proof bulkhead 8 is made of a breathable sheet material so that the same functions as a filter. Or the dust-proof bulkhead 8 is mounted with a dust collection device. |
