Smoke management design and numerical simulation of metro depot with development of upper covers

For the Chongqing Jin’aosi metro depot with the development of upper covers, two sets of smoke exhaust systems are designed according to different heat release rates, and the corresponding smoke exhaust rate of any smoke control zone is 253 200 m3/h and 133 200 m3/h respectively. The numerical simulation is carried out by using FDS software to verify the smoke exhaust effect of the smoke exhaust systems. The results show that in cases of 8 MW fire occuring in the middle, front or right of the metro depot, the smoke exhaust system of the scheme 1 can exhaust the smoke effectively, and the height from the bottom of the smoke layer to the ground meets the minimum clear height requirements. When 2.5 MW and 8 MW fires occur in the middle of the metro depot respectively, the smoke exhaust system of the scheme 2 can exhaust smoke effectively.