Study on Temperature Control of Ventilation System in Construction Period of High Ground Temperature Tunnel

As China’s infrastructure continues to advance, tunnels will encounter increasingly complex geological conditions during construction. High geothermal heat seriously affects not only the normal construction of tunnels but also the physical and mental health of construction workers. Due to the existing cooling measures have poor effect and high energy consumption, so the cooling effect of the ventilation system is neglected. This paper studies the influence of ventilation system on the temperature inside the tunnel under different air supply volumes, and the distribution of temperature inside the tunnel. The numerical results show that the ambient temperature in the tunnel decreases gradually with the increase of air supply volumes at the same air temperature, but it will not change with the increase of air supply at a certain temperature. This study provides the theoretical basis for optimizing the ventilation and cooling system, it will provide a better construction environment for tunnel workers.