Lui Zhixin on the construction site courtesy of the picture
"Son, the festival is also busy, but don't take care of your body!" "Mom, it's okay, you know, the construction site is busy all year round, can't go home to spend more time with you, you take care of yourself..."
Lv Zhixin is a young man of China Railway 16th Bureau Rail Company, who began the construction of Kunming Metro in July 2018, and entered the Kunming Metro Line 5 in April 2019.
"I still remember that during the National Day in 2020, the fence pile of Yuantong Park Station was only completed 1/4, and I just transferred to this station, I thought to myself, isn't it a two-story small station, it should be completed quickly and easily," Lu Zhixin said with a smile, "But a series of problems in reality, let me know, I underestimated this station!" ”
Speaking of the construction of the enclosure structure of Yuantong Park Station and the excavation of the earthwork, Lu Zhixin has always remembered it, in his own words, that is, "a hanging heart plus a handful of tears and a handful of sweat can achieve a pile and a side of soil." ”
The underground rock formation of Yuantong Park Station has high hardness, which increases the difficulty of drilling. A 20-meter-long enclosure pile can be drilled in just three or four hours in the ordinary soil layer, while yuantong park station is completed in at least eleven or twelve hours. "At that time, the construction period was tight, and under the premise of ensuring safety, I wished I could drill holes myself!" Speaking of this, he clenched his fists.
There are caves under the station, which are more likely to cause collapse holes. Lu Zhixin introduced that in addition to doing a good job of side station supervision with colleagues on site, he also actively worked with the project leaders to find ways to continuously adjust the grouting parameters and change the grouting method to shorten the solidification time of cement and water glass, and ensure that the formation around the hole was reinforced in place in the shortest possible time, so as to effectively improve the porosity and prevent the occurrence of collapse. "Before the relevant parameters and methods are fully determined, I don't dare to take a nap in my thinking." He said happily.
When the earthwork excavation of Yuantong Park Station, the geology of the round gravel layer is rich in water, and some of them have caves, so that the water in the foundation pit is much more than before, but in order to catch up with the delayed construction period of the previous enclosure construction, more than 20 excavators work on the foundation pit surface at the same time every day.
"In order to ensure safe excavation and digging in place, our technicians took turns to fight, wearing raincoats, rain pants, and rain boots for more than 20 hours a day, stepping on the slippery muddy water, one foot deep and one foot shallow in the mud pool, in order to be a good excavator instructor and measure the height of the formation," Said this, Lu Zhixin choked up a little, "That more than 1 month, when you sleep at night, you can dream of the sound of the excavator's 'bells', now that I think about it, it is difficult to forget." ”
"Yuantong Park Station is also a subway station with the most forms of enclosure structure I have seen so far, with spacer piles, stilt piles, snap piles, ground walls, and more mechanical equipment is needed, which adds difficulty to the narrow construction site again," Lu Zhixin added, "Of course, only by taking down all the difficulties can we live up to the title of 'Four King Kongs' given to me by the leaders, Li Qiang, Xiao Wang, and Xiao Meng!" ”
"In the blink of an eye, a year has passed, the main structure of Yuantong Park Station has been completed, and the auxiliary structure has also been completed 1/3, this National Day, I still choose to stay at the construction site and continue to fight with my teammates, in order to ensure the smooth and timely completion of the remaining auxiliary structures, and it is also a contribution to the scheduled opening of Metro Line 5!" Lu Zhixin clenched his fist again.
Yunnan Network reporter Zhao Gang correspondent Zeng Lizhen photographic report