Approaching the 15th day of the first lunar month, the return passenger flow of the Spring Festival continues to run at a high level, and the maintenance tasks on the Qinghai-Tibet Railway are also extremely busy. At 8:10 on the 20th, a crisp bell rang throughout the work area, and a group of 11 people from the Tuotuohe Electric Power Work Area of the Qingshuihe Workshop of the Xining Power Supply Section of the China Railway Qinghai-Tibet Group lined up neatly, counted the tools and got on the train, and went to the Tanggula North Section of the Qinghai-Tibet Railway 100 kilometers away to carry out centralized power maintenance operations.
Today's maintenance task is in the northern section from Buqiangge to Tanggula, with an altitude of more than 5,000 meters. Ying Zhongxue, secretary of the party branch of Qingshuihe workshop, told in the car. After an hour and a half of turbulence, the maintenance personnel arrived at the starting point of the centralized maintenance section at 9:40.
The wind caused the high-voltage lines to sway gently, and the tracks were covered with snow on both sides, and everyone felt the chill from Tanggula as soon as they got off the train. "Today's maintenance task is to Buqiangge to Tanggula North No. 45 tower to No. 245 tower, focusing on the line, insulator maintenance, tower, pole status inspection and other work, high altitude, low temperature, heavy equipment wear, climbing operations we should pay attention to prevent falling, falling. Ying Zhongxue was afraid that his voice would be blown into a blur by the wind, so he shouted loudly again to ensure that everyone could hear it.
Workers in the Tuotuohe Electric Power Zone inspect power equipment. (Provided by Xining Power Supply Section) The sky was clear, the sun shone on the mountains in the distance, and the maintenance workers put on sunglasses. Working at high altitudes, strong UV rays can greatly increase the risk of cataracts.
A train roars by, and workers stand outside the fence quietly waiting for dispatch orders. It didn't take long for the dispatch order conveyed by the attendant Peng Jingcheng to the walkie-talkie: "The power outage order has been issued, you can connect the ground wire, and prepare to start the operation." "With the issuance of the power outage order, everyone began an intense and orderly centralized maintenance work.
The 18-meter iron tower, the foreman Hou Fuping climbed to the top in less than a minute, fastened his seat belt and began maintenance operations. The space on the tower is narrow, and there is a certain safety distance between the installed power equipment and the tower, which is not convenient for maintenance. The fulcrum of the whole body of the electrician is on the safety belt, and the whole body should be suspended in mid-air to complete the equipment maintenance, and at the same time, the safety belt should be moved, the bolts should be tightened, and the cross arm should be lying on the cross arm to observe whether there are any loose bolts on the insulator string of the tower.
The vibration caused by the passing of the train, the shaking of the wire affected by the wind and snow, may lead to the loosening of the screws, and then affect the safe operation of power equipment. Hou Fuping said.
It was almost noon, and the temperature under the tower was still around minus 20 degrees Celsius. Ying Zhongxue moved his hands wearing gloves, "After a long time, my hands are numb, and the comrades who climb the pole are the hardest, especially when standing on the top of the door-shaped pole, there is only one angle steel with the width of the sole of the foot under his feet, there is no cover on both sides, the cold wind blows, even if he wears two cotton pants, he feels frozen." Ying Zhongxue pointed to the workers next to him, who still have chilblains in their ears and chapped and peeling their hands at this time of year, and they will not heal until the warm weather in July and August.
Workers in the Tuotuohe Electric Power Zone inspect power equipment. (Provided by Xining Power Supply Section) At an altitude of 5,000 meters, the oxygen content is only half of that of the plain, and even simple walking will make people feel chest tightness and shortness of breath, and they have to climb up and down the maintenance tower and electric pole dozens of times a day, and this maintenance operation will continue until the end of September.
At 18:40, with the issuance of the power transmission order, the workers of the Tuotuohe Electric Power Work Area completed the day's maintenance work. Snowflakes were floating in the sky, and on the returning car, everyone leaned together to keep warm, and after a while, snoring in the car was everywhere. Ying Zhongxue didn't fall asleep, he was still reviewing the day's work in his mind. On the same day, they completed a total of 4 line maintenance25 kilometers, overhaul 3 transformers, 2 isolation switches, 6 drop-out fuses, and a total of 29 equipment defects. "Back in the work area, we still have to hurry up to sort out today's maintenance data, and every detail cannot be ignored. ”
It was getting dark, the wind and snow were getting heavier and heavier in Tanggula, and train after train passed by the railway line beside the road. (Reporter Wang Huns).