S0503-1-3 坑口持ち出し抑制のための集中排気を含むトンネル換気システムの制御評価法の提案(トンネルの空気力学、換気、火災(1))

概要

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In tunnel ventilation, it is important to reduce ventilation power consumption, to maintain environment in tunnel and to suppress carry out from portal. The authors already proposed evaluation method of control that unified evaluation of power consumption and evaluation of pollution in tunnel. The authors propose evaluation method of control we added evaluation of environment outside the tunnel. In order to confirm the validity of the method, the authors carried out numerical simulation of ventilation with variety of control period of jet fans and exhaustion fan. The results showed that the smaller control period of the exhaustion fan is effective in better suppressing of carry out from portal without sacrificing environment in tunnel and power consumption. It also became clear that the target value of reverse velocity at the portal region should be above certain value in order to maintain environment.
一般社団法人日本機械学会の論文
2009-09-12