Study on temperature rise laws of long and large submarine road tunnels

This paper relies on a long and large submarine road tunnel to test the temperature inside and outside the tunnel and the rock layer temperature, and studies the temperature rise law in the tunnel under the influence of factors such as tunnel rock layer temperature, wind speed, traffic flow, and outdoor environmental temperature. The results show that the main factors affecting the change of air temperature in the long and large submarine road tunnel are outdoor environmental temperature, traffic flow and rock layer temperature. Outdoor environmental temperature has a greater impact on the temperature at the tunnel entrance. There is a certain positive correlation between the air temperature rise in the tunnel and the traffic flow, but the change in the air temperature has a delay of 1 to 2 hours compared with that in traffic flow.