A theoretical and experimental study of flame length under a tunnel ceiling

Fan, Chuan; Yang, Jian; Li, Man Hou

doi:10.1007/s10973-016-6020-7

Cited by 12 publications

(1 citation statement)

References 32 publications

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“…However, for the length of near fire source area, the calculation is not accurate. Fan [14] conducted experimental research in a 1:20 model tunnel, studied the flame length integral model considering the influence of tunnel section and ventilation velocity under large HRR near the fire source, and proposed a dimensionless ventilation velocity form considering the hydraulic diameter of the tunnel. Through a series of fire experiments, Jiang [15] studied the phenomenon of the central smoke exhaust system of the tunnel through a series of fire experiments, and measured and analyzed the height, temperature and flow rate of the smoke layer below the smoke vent.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on fire characteristics in cable compartment of utility tunnel with natural ventilation

2022

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The fire characteristics under natural ventilation in the cable compartment of the utility tunnel are studied. A series of small-scale fire experimental tests are conducted to obtain the maximum temperature below the ceiling of different ignition vertical heights and cable types. In this paper, the ceiling temperature decay and heat release rate (HRR) are studied in the cable compartment of utility tunnel. Through experimental tests, the fire characteristics of placing the fire source on the near wall side 3.0 m away from the shaft of the utility tunnel cable compartment are studied. The results showed that under the action of natural ventilation, with the decrease of fuel quantity, the mass loss of cable decreases, and the maximum temperature below the ceiling of the cable compartment in the utility tunnel decreases. ZRYJV cables burn more sufficient combustion than RVVR cables. A new empirical association for total HRR is proposed. Those experimental test results are used as validation data for the newly proposed empirical correlation of total HRR. This paper hopes to provide some basic fire safety references for the utility tunnel planning of the urban underground cable compartment.

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Section: Introductionmentioning

confidence: 99%