Research on power cable tunnel and urban utility tunnel

2017 ◽  
Author(s):  
Li Taobo ◽  
Zhang Yi ◽  
Yang Bo ◽  
Chen Peng
Keyword(s):  
Power Cable ◽  
Utility Tunnel

scholarly journals A Multi-Scale Analysis of the Fire Problems in an Urban Utility Tunnel

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1976 ◽  
Author(s):  
Kai Ye ◽  
Xiaodong Zhou ◽  
Lizhong Yang ◽  
Xiao Tang ◽  
Yuan Zheng ◽  
...  
Keyword(s):  
Temperature Fields ◽  
Maximum Temperature ◽  
Power Cable ◽  
Relative Width ◽  
Gas Temperature ◽  
Safety Level ◽  
The Sustainable Development ◽  
Fuel Burning ◽  
Important Solution ◽  
Utility Tunnel

Building utility tunnels has been widely adopted as an important solution for the sustainable development of cities, but their unique fire problems have not attracted enough attention to date. With the purpose of preliminarily understanding the fire phenomena in a utility tunnel, this study performed a comprehensive analysis, including the burning behaviour of accommodated cables, hot gas temperature field and enhanced fuel burning rates based on bench-scale, full-scale and model-scale fire tests. The critical exposed radiative heat flux for the 10-kV power cable to achieve complete burning was identified. The whole burning process was divided into five phases. The cable’s noteworthy hazards and dangerous fire behaviours were also examined. The two-dimensional (2D) gas temperature fields and longitudinal maximum temperature distributions were investigated carefully, after which a versatile model was derived. The model predicted the maximum temperature attenuation of both upstream and downstream flows reasonably well. Finally, the phenomenon of enhanced fuel burning was explored. A multivariate cubic function that considers the global effects of relative width, height and distance was further proposed to estimate the enhancement coefficient. The current findings can provide designers and operators with valuable guidance for the integrated promotion of utility tunnels’ fire safety level.

scholarly journals A brief analysis of the power cable planning and design of the utility tunnel

2019 ◽  
Vol 1314 ◽  
pp. 012050 ◽  
Author(s):  
Yan Yao ◽  
Jian Wang ◽  
Jiayu Xu ◽  
Yulong Hu ◽  
Jiaorong Ren ◽  
...  
Keyword(s):  
Power Cable ◽  
Planning And Design ◽  
Utility Tunnel

Strongly robust approach for temperature monitoring of power cable joint

2019 ◽  
Vol 13 (8) ◽  
pp. 1324-1331 ◽  
Author(s):  
Liezheng Tang ◽  
Jiangjun Ruan ◽  
Zhibin Qiu ◽  
Chao Liu ◽  
Ke Tang
Keyword(s):  
Temperature Monitoring ◽  
Power Cable ◽  
Robust Approach
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