Abstract: In the construction process of long-distance single-head roadway，due to the conduct of various operations，it is easy to cause the air index in the roadway to exceed the standard. When the length of the single-head roadway continues to extend，the original pressure ventilation method has been unable to meet the requirements of underground ventilation. In order to solve the ventilation problem of long-distance single-head roadway，on the basis of theoretical calculation，Ventsim software is used to simulate the venti⁃ lation of long-distance single-head roadway. The forced ventilation，extraction ventilation，mixed ventila⁃ tion and mixed + air curtain machine ventilation simulations are carried out under the conditions of 1 500 m， 2 200 m and 3 554 m，respectively. The air volume，total air resistance and air network efficiency are ana⁃ lyzed. The results show that the mileage of the single-head roadway is less than 1 500 m，and a single 22 kW fan is used for forced ventilation. The air volume is 9.4 m³ /s，the total air resistance is 20.917 N·s ² /m⁸ ，and the air network efficiency is 55.8%. After the roadway mileage reached 2 200 m，three 22 kW fans were used for hybrid ventilation. The air volume was 13.2 m³ /s，the total air resistance was 41.647 N·s ² /m⁸ ，and the air network efficiency was 80.4%. The roadway mileage reaches 3 554 m，and the mixed + air curtain machine is used for ventilation. The air volume is 15.2 m³ /s，the total air resistance is 81.186 N·s ² /m⁸ ，and the ventilation efficiency is 71.3%.The simulation results are used in engineering practice, and the ventila⁃ tion mode of hybrid + air curtain machine is adopted, which effectively solves the ventilation problem of long-distance single-head roadway.

Key words: long-distance single-head roadway, ventilation calculation, Ventsim software