3D Numerical Simulation on the Construction Ventilation of Large Underground Tunnel-chamber Groups

The construction ventilation problem of large underground tunnel-chamber groups is the key to ensuring security and speeding up the construction progress.The traditional construction ventilation design can not control the real ventilation effect,resulting in the waste of resources.Based on fluid mechanical theories,3D numerical simulation on the construction ventilation of underground tunnel-chamber groups can quantitatively analyze the ventilation effect of large tunnel-chambers,key nodes or ventilation holes(wells),etc,and provide a basis for ventilation design and optimization.Engineering applications show that the method is feasible,reasonable and scientific.