横浜北トンネルにおける火災時の避難環境確保への取り組み

摘要

トンネル火災; 火災時トンネル換気制御; CFD解析(1D&3D) ;The Yokohama-kita Tunnel accounts for about 70% (about 5.9 km) of the Yokohama North Line(Yoko-hama Circular Northern Route) which began operation recently, and is the longest tunnel in the metropolitan area. In addition to have heavy traffic, this tunnel contains a complex ventilation system with branching and merging flows through the tunnel, and securing an evacuation environment in the event of a fire in the tunnel was a major challenge. Thus, various studies were carried out on how to secure evacuation environments in the event of a fire in the Yokohama-kita Tunnel. This is a report of efforts to ensure a safe evacuation environment in the Yokohama-kita Tunnel in the event of a fire.%高速神奈川7号横浜北線(以降，横浜北線とする.）は 高速神奈川1号横羽線の生麦ジャンクションから，第三 京浜道路の港北インターチェンジまでの約82kmをつな ぐ路線で，全線の約7割(約5.9km)の区間がトンネル構造 (横浜北トンネル)となっている.