Calculation of ventilation rate during construction period of plateau tunnel

Through the test of carbon monoxide emitted by construction machinery in plateau tunnel, obtains the data under this geographic climate condition. Based on the test data, calculates the ventilation rate required for dilution CO to a certain concentration by using the specific volume method and safe dilution method. Compares the domestic and foreign related standards, indicates that the ventilation rate in our country’s standard is smaller than the actual calculation value, and it should be increased according to the actual situation.