Struggler Zheng Youth 丨 The Driver of the Shield of the China Railway Tunnel Bureau Yongqi —— Perseverance for eleven years is true skills

The tunnel is deep and the machine roars, the main driver of the shield machine of the China Railway Tunnel Bureau, Yong Qi, wears a helmet, keeps an eye on the screen on the screen.

For 12 hours a day, Mother Yongqi has persisted for 11 years, and has been excavated for more than 20 kilometers. After practicing a good ability.

In 2016, the China Railway Tunnel Bureau built the new Chengcheng Kun -Kun Railway in Daliangshan. As the driver of the shield machine, Mother Yongqi is the task of opening the first long tunnel of Xinchengkun -Kun Railway, the newly -length 21.8 kilometer -Xiaosanling Tunnel.

In March of the following year, the company organized party members to return to the Samura Tunnel of the Laicheng Kun Railway 30 kilometers away, and sacrificed the martyr's cemetery by the tunnel. On the monument of the "Eternal Immortal" in the cemetery, the mother never discovered the name of his grandfather Han Lifang.

"At that time, the grandfather sacrificed when he was repaired, but his family never knew which paragraph it was, and where he was buried. Until this moment, the power of inheritance was except!" Mother Yongqi said.

In this valley, the dark river and faults are everywhere. Difficulties are still those difficulties, but the construction conditions of railway tunnels are not the same as before. In the past, everything relied on manpower, surveyed, drilling, and drilling; now drone survey, three -arm full computer rock -cutting trolley drilling, all use advanced technical equipment.

"My current working conditions are compared with my grandfather, and I have improved too much. I have to persist and make more achievements." Mother Yongqi said.

As the mainstream high -tech equipment of tunnels and underground engineering, there are more than 50,000 parts and components of the shield machine, which integrates more than 30 subsystems of five major systems, and it is very difficult to operate. "We usually drive, and the navigation positioning difference is quite accurate, but when the shield is digging in, the four directions of the shield's upper, lower, left, and right are not more than 5 cm." Mother Yongqi said.

When do I need to spray foaming agents? What is suitable for using puffed soil? What situations need to be mixed? From the Yangtze River Delta, the Central Plains urban agglomeration to the Shuangcheng Economic Circle in Chengdu and the Guangdong -Hong Kong -Macao Greater Bay Area, the mother Yongqi optimized the solution in practice again and again.

In the construction of Ningbo Metro Line 1, the shield machine needs to cross special areas such as the Hangzhou -Ningbo Railway Bridge and the Yongfeng Cuisu cultural relics site of the Yuan Dynasty, and requires strict control on the surface to be controlled within 4 mm. The mother -in -law team has been in close day and night, constantly optimizing and improving the excavation plan, and controlling the surface settlement within 2 mm, setting a world record under the same construction conditions.

In the construction of Zhengzhou Metro Line 2, the shield machine needs to wear major risks such as Longhai Railway route and Zhengxi Passenger Dedicated Line. Mother Yongqi worked for 18 consecutive hours in the tunnel every day, carefully studying the scum improvement technology, and created a good result of a 28 -day excavation of 28 rings. It only completed the 1.6 -kilometer tunnel digging in 80 days in just 80 days.

In October 2016, the China Railway Tunnel Bureau established the "Mother Yongqi Shield Operation Skills Master Studio". From self -research to leading teams to cooperate, Mother Yongqi Studio completed 34 innovation results, created more than 10 million yuan of economic benefits for enterprises, and trained 48 outstanding shield operation skills.

As long as the machine is running, the work of the shield machine driver begins, without weekends, no holidays. The narrow host room, more than ten hours a day, high temperature, dust, humidity, noise shrouded environment ... In the post of the driver of the shield machine, the mother Yongqi has adhered to 11 years.

In the past 11 years, he read more than 2 million words of technical information and led 12 special technical solutions and construction manuals for 12 shield construction construction. Over the past 11 years, he completed one after another. In 2019, he penetrated the world's largest underwater railway shield tunnel -the Lion Ocean Tunnel of the Fogwin Intercity Railway; Each dug 20 ring switch is increased to each digging 60 ring and replaced. At present, Mother Yongqi is driving the first intelligent full -section hard rock tunnel excavation machine in my country to challenge the construction of the Plateau High -Han -Han Railway Tunnel ...

From imported equipment to domestic equipment, from small diameter to large diameter, from underground to underwater, Mother Yongqi's tunnel digging technology has continued to improve, so it has won the National May Day Labor Medal, the Chinese Youth May 4th Medal, etc. The 70th anniversary of the founding of the People's Republic of China. "Witness the connection between the tunnels, and all the efforts are worth it!" Mother Yongqi said.

"People's Daily" (September 22, 2022, 06 version)

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