Source: Xinhua Net
Xinhua Network Zhengzhou, January 18 (Fan Zuoyan Gu Chaoxin Yue Ruiguo) On January 18, 2022, the second day of the Spring Festival, the taste of the year is getting stronger, and the wanderers are eager to return home. At 0:20, the night was dark, the cold wind was biting, and the temperature was -6 °C.
Located at the 193-kilometer Zhengyu high-speed railway in the yumai of Funiu Mountain, several mountain village farmhouses are looming, quietly lying across the hillside. Accompanied by weak headlights, 5 high-speed rail flaw detectors quickly carried flaw detection and inspection instruments onto the high-speed rail line.
"Zhengyu high-speed rail upward K193++ 036m, left share, mileage increase... The information entered is correct. "Okay, let's get started!" Cai Hongxun, foreman of the fourth work area of the rail flaw detection team of the Zhengzhou high-speed rail infrastructure section, confirmed the input of rail flaw detection information and announced the start of operation.
In the early hours of the morning, they have to push the instrument, accompanied by the cold wind and the cold moon, walking on the rails, checking, marking, recording, repeating this thing day after day.
According to the plan, they will conduct flaw detection inspections on the zhengyu high-speed rail line totaling more than 7 kilometers from K193+036m to K200+130m on the same day.
At 21:00 on the 17th, they gathered in the office and held an operation plan formulation meeting and a plan layout meeting respectively, determined the operation location, walking plan, etc., and reminded the operators of the division of labor and safety precautions. After that, drive from the work area to the work site.
During the operation, every two people use a flaw detector and are responsible for the flaw detection and inspection of a strand of steel rail. As the person in charge of the operation, Cai Hongxun checks the mileage of a walk with the operator every five minutes to ensure that the inspection parameters are accurate and unbiased.
"Let passengers have a comfortable ride to enjoy, experience a better Spring Festival, rail equipment is the key, everyone listens to the alarm, watch the echo must be careful!" Cai Hongxun reminded.
During the operation, the thought of the flaw detector should be highly concentrated, and both eyes must be closely focused on the outlet of the instrument display. If they find suspected ripples, they have to repeatedly check to confirm whether the rails are safety hazards.
"The flaw detector mainly uses ultrasonic waves to generate reflections at the rail mass interface, and detects whether there is damage inside the rail through the refraction of the wave and the conversion of wave patterns, which is a reason for the doctor to do 'B ultrasound'." If you walk fast, it is easy to miss the test. Cai Hongxun said.
"Duh... At 2:15 a.m., an alarm sounded from the flaw detector of Zhang Junfeng, a flaw detector. He immediately pulled the instrument back and repeatedly pushed it twice at the alarm place, then looked at the alarm place carefully with a headlamp and reported to Cai Hongxun: "It is the weld of the rail, there is no problem." After saying that, he continued to push the flaw detector forward.
"Steel rail is the most basic equipment to ensure the safe operation of high-speed rail trains at a speed of 300 kilometers per hour, and when the temperature is low, due to the principle of 'thermal expansion and contraction', it is easy to break the rail safety problem, and our job is to find hidden dangers in advance to ensure safety." Cai Hongxun said.
"Two flaw detectors, one walkie-talkie, one record book..." At 4 o'clock, the flaw detection operation was completed, the tool inventory was carried out, and the operation was summarized.
"Although the night work is very hard, we are also very pleased to see that a train of high-speed rail will return home for a reunion during the Spring Festival during the day, and people visiting relatives and friends will arrive at their destination safely and on time." Cai Hongxun said. (End)