In order to investigate the smoke diffusion law under the one-side centralized smoke exhaust mode of the urban connection tunnel (UTLT), the influence of the area of the smoke exhaust port on the smoke control, temper...In order to investigate the smoke diffusion law under the one-side centralized smoke exhaust mode of the urban connection tunnel (UTLT), the influence of the area of the smoke exhaust port on the smoke control, temperature distribution and smoke exhaust efficiency of the one-side centralized tunnel was experimentally studied. The results show that increasing the area of the smoke outlet will reduce the thickness of the smoke layer;The top smoke outlet can effectively reduce the temperature at the smoke outlet, and the temperature at the downstream of the smoke outlet is obviously lower than the temperature at the upstream of the smoke outlet;The bend in UTLT can delay the longitudinal spread of smoke. Changing the distance between the fire source and the smoke outlet has little effect on the one-sided centralized smoke exhaust.展开更多
文摘In order to investigate the smoke diffusion law under the one-side centralized smoke exhaust mode of the urban connection tunnel (UTLT), the influence of the area of the smoke exhaust port on the smoke control, temperature distribution and smoke exhaust efficiency of the one-side centralized tunnel was experimentally studied. The results show that increasing the area of the smoke outlet will reduce the thickness of the smoke layer;The top smoke outlet can effectively reduce the temperature at the smoke outlet, and the temperature at the downstream of the smoke outlet is obviously lower than the temperature at the upstream of the smoke outlet;The bend in UTLT can delay the longitudinal spread of smoke. Changing the distance between the fire source and the smoke outlet has little effect on the one-sided centralized smoke exhaust.
