Wuhan Metro Qianchuan Line First Phase 1 "Dentong"

The Yangtze River Daily Da Wuhan Client August 1st News On July 31st, the first phase of the first phase of the Wuhan Metro Qianchuan Line was successful, marking the success of the power supply system equipment of the line Powerful power guarantee. This also means that the first phase of the Sichuan Line is a big step away from the goal of opening to traffic.

The power supply system is hailed as the "heart" of the subway, providing power support and energy supply for the safe and stable operation of the subway. From the 220 kV substation of the State Grid, the power supply is transported to the main substation of the subway through the pressure reduction to 110 kV. The main transformer of the subway is lowered to 35 kV to the substation on the stations across the line, and then the substation is powered by the station's power station power lighting, communication signals and interval equipment, and provides power guarantee for rail vehicles.

Placed tracks. Reporter Li Yonggang Photo

Refined construction with national excellent standards

In accordance with the national excellence standards, the project department has achieved the results of the quality improvement of 7 processes in innovation.

The first time the bridge telescopic joints of the elevated section are installed, the sunshade retractable section is used to reduce the deformation of the sunshade caused by thermal expansion and contraction, which increases the safety and stability of the cable operation; , Ensure the horizontal degree and regulating gap value of the base installation, and enhance the accuracy of derailed installation. At the same time, the BIM modeling technology is used to digitize and picture the standards of each process in detail. The image intuitively guides and standardize the on -site construction process to ensure that one time is formed and one time.

90 sunroofs and "hard bones"

The first phase of the Qianchuan Line has two cable connection construction, and the power supply is introduced from the Songjiagang owner of Line 2 and the North Station of Line 7, respectively. After the construction requires the operation and revenue on the day of Line 2 and Line 7 and stop the power supply in the interval, the construction staff uses it at 00:00 to 3:30 am.

Ye Nian, the person in charge of the construction of the China Railway Wuhan Electricization Bureau, introduced that the operators carried the equipment at 0:40 to enter the underground interval. In the previous two hours, the security officers conducted on -site safety technical intercourse on the operators and prepared tools and equipment. At 3 am, all the established tasks of the day must be completed; at 3:30, the staff, equipment, and the construction.

During the 3 -month sunroof point construction, the project department was linked to fight, and the key tasks of the day, Zhou and Months were detailed and decomposed, and the pins were sewed, and the key points, difficulties, and nodes were shown.

"Electric Tong" is an important milestone node for subway construction. As the first phase of the Qianchuan Line is "light up", Sun Zibo, the head of the power supply project of the construction business headquarters of Wuhan Metro Group, said that the power consumption of the project from previous temporary power consumption needs The transition to formal electricity also means that the signals, power lighting, ventilation, water supply drainage, escalators, and automatic ticket vending machines in all stations in the line will enter the stage of electrical debugging and implementation function. "Electric Tong" will also provide continuous power support for the cold, hot, comprehensive joint and trial operation of subway trains.

The Qianchuan Line Project is going to a schematic diagram. Correspondent Yuan Yonghua's picture

The first phase of Qianchuan Line extends from the North Station of Line 7, and passes 7 seats such as Maichi Station, Tangyunhai Station, Dragon Avenue Station, Tenglong Avenue Station, Tianyang Road Station, Linkong North Road Station, Hengdian Station station. The Qianchuan Line is one of the important passenger corridors in Wuhan. After completion, it will bring great convenience to the travel of the residents of Qianchuan, Hengdian, and Panlong City. The airport hub distribution capacity is of great significance to promote the sustainable development of the urban economy in the northern part of Wuhan.

(Changjiang Daily reporter Tao Changning correspondent Zeng Si Yuan Yonghua Pan Xing)

【Edit: Wang Rongfei】

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