China News Service, Nanchang, February 24th, title: Spring Festival Story: "High-altitude acrobats" on the Yangtze River
Author Yuan Rujing Xu Jiaqi
What kind of experience is it like to work on the top of the Yangtze River in the dark night?
During the Spring Festival travel period, a group of people needed to use the "skylight" time when the high-speed rail was out of service at night to repair and maintain the catenary equipment on the bridge to ensure the safe operation of the high-speed rail.
The Anjiu High-speed Railway Brillzhou Yangtze River Bridge spans the Yangtze River and is located at the junction of Jiangxi and Hubei, with a total length of 3.5373 kilometers. It is the first cross-cable cable-stayed bridge in my country.
The deck of the bridge is 40 meters high, and it is located in the "air vent" of the Yangtze River. It is accompanied by rain and snow in winter, and the average nighttime wind force is above 6.
At 1:35 in the morning, Gong Jichao, the foreman of the Lushan High-speed Railway Power Supply Zone in Jiangxi Province, and his workers arrived at the Brillzhou Yangtze River Bridge by work trucks.
Under the illumination of the car lights, the dark river surface was bottomless, and the whistling wind and the roar of the work truck came one after another.
"Everyone, hurry up and put on your rain pants, and prepare to go to the heights!" Gong Jichao reminded loudly in the cold wind.
When working on the river at night, the catenary workers will wear thermal underwear, tie their trouser legs with socks, and put on rain pants to prevent the cold wind from entering the trousers no matter whether it is raining or not.
The catenary workers measure the parameters of the equipment on the bridge.
Photo by Yang Ling
After taking safety measures, they began to work on the heights.
In winter, the temperature is low and the air is humid. Gong Jichao's task today is to check the compensation device of the catenary, which is easily affected by the temperature, to ensure that the equipment is in good condition.
The compensation device of the catenary can keep the exposed catenary equipment in balance at all times, minimize the impact of low temperature on the equipment, and ensure that the equipment can operate normally in bad weather.
"This balance wheel is a bit skewed, come and see!" The sharp-eyed Gong Jichao quickly took out a spirit level to measure. "The offset is 20 degrees, which exceeds the standard value."
The balance wheel is an important part of the compensation device, and if the balance wheel is too misaligned, the internal ropes will be worn and the risk of equipment failure will increase.
Gong Jichao and his co-workers climbed the pillars and used a spirit level to check the offset angle of the balance wheel one by one.
High in the sky, they go up, down, left, and right, stepping on the contact net in the air, just like performing acrobatic tightrope walks.
They had less than half an hour left. The cold wind made people sway all the time, but the movements of their hands had to be accelerated. Gong Jichao and his co-workers used wrenches to quickly correct the offset balance wheel.
At 4:10 in the morning, the offset balance wheel was corrected to its original position, and Gong Jichao, who had been nervous all the time, finally breathed a sigh of relief.
"During the Spring Festival, more than 1,500 people take the Anjiu high-speed rail to go home every day. If there is a problem with the power supply equipment, it will directly affect the safe operation of the high-speed rail."
The average age of the boys in the Lushan High-speed Railway Power Supply Zone is only 26 years old. Many of them came here after the Anjiu High-speed Railway entered the acceptance stage last year.
"During the Spring Festival, there are about 4 to 5 maintenance operations like today." Gong Jichao led the boys to brave the wind and cold to perform "acrobatics" on the Yangtze River, guarding the safety of the high-speed rail, and smoothing the return of millions of passengers. home road.
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