Ventilation-cooling method for high-geothermal deeply-buried diversion tunnel construction

The invention provides a ventilation-cooling method for high-geothermal deeply-buried diversion tunnel construction. The ventilation-cooling method comprises the following steps: I, carrying out health management of people; II, ventilation-cooling; III, cooling blast holes; IV, making ice to cool; and V, cooling measurement equipment. According to the ventilation-cooling method, a ventilation technology and a low-temperature cold water technology are integrated so as to construct in high temperature environment, so that the heatstroke symptoms of constructors in high temperature environment are reduced; the wearing of mechanical parts caused by engine oil temperature increase, viscosity drop and lubrication effect reduction of a construction machine is prevented; pipe burst, oil leakage of a joint and solenoid valve coil burning caused by high temperature are prevented; the accelerated aging of a sealing member is prevented; the emulsion explosive failure in high temperature environment is also prevented and the phenomena of nonel softening and misfire are avoided; the normal use of monitoring equipment in high temperature environment is guaranteed.