High-voltage Entry into the Tunnel Power Supply Construction Technology for Long and Large Tunnel
In the construction of long and large tunnels,with the increase of tunnel excavation footage,the extension of power supply lines and the increase of some electrical equipment,the voltage decreases obviously,and the terminal voltage can not reach the rated voltage of electrical equipment,which affects the service life and normal operation of equipment,and then affects the construction progress.The original low-voltage entry into the tunnel method can not meet the requirements of long and large tunnel construction.Based on the practice and power consumption analysis of high-voltage entry into the tunnel power supply in 9#extra-long tunnel of Georgia modern railway,this paper summarizes the high-voltage entry into the tunnel construction technology in long and large tunnel,aiming to provide reference for the high-voltage entry into the tunnel power supply construction in tunnels.
long and large tunnelhigh-voltage entry into the tunnelpower supply construction
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