Temperature rise factors and measures in Yamate tunnel

Abstract

This paper describes measures to suppress the temperature increase inside tunnels on urban roads. The Yamate Tunnel is a long tunnel extending a total of 18km in the center of Tokyo. The tunnel interior temperature has increased during the summer. Motorcycle riders have complained about the heat inside the tunnel. So we investigated and analyzed the causes of the temperature increase. To suppress the increase of the temperature, we installed mist spraying equipment inside the tunnel. This system successfully cooled the inside of the tunnel. Furthermore, we compared the calculated value to the measured value of the temperature in the tunnel.