Don’t be afraid of the “baked” test! Construction of Oujiang water diversion project continues to advance

At the construction site of the west-bound water diversion tunnel TBM (tunnel hard rock boring machine), the tunnel has been bored to 1111 meters, and the operating temperature in the limited space on site is as high as 40°C. The segment assembly work is currently in progress. The site is in full swing and the workers are sweating profusely. With the advancement of the jack inside the TBM host, the cutterhead rotates and rolls to break the rock. The generated gravel is sent to the belt conveyor through the scraper plate on the cutterhead. , in the excavated cylindrical space, the assembler assembled the segments weighing 3.5 tons into rings along the periphery of the tunnel. Under the high temperature, the workers climbed up the elevated structure, cooperated with the TBM equipment, raised their arms, put the long screws into the cavity, used the hammer in their hands, and knocked the nuts hard, so that each segment was firmly fixed on the cave wall. .

Due to the continuous operation required for TBM excavation, heavy labor processes during high temperature periods have been adjusted recently. However, the temperature in the cave remains high. Refrigeration equipment and industrial ice are installed on site to cool down and reserve for heatstroke prevention. Cooling drinks, medicines, etc. create a safe and good working environment for the majority of workers.

At the construction site of the water intake hub at the ferry head, workers were working on the third layer of the grit chamber, dripping with sweat. In order to seize the fine weather and speed up the progress, the grit tank structure construction team invested nearly 50 workers every day, carried out peak-staggered construction in summer, and adopted a construction method of "grab the two ends and rest in the middle" to avoid the high temperature period at noon.

Rebar worker Zheng Huashun said: “In order to avoid the high temperature, we work in two shifts. We come to the construction site at 5 a.m. every day and work until about 10 a.m., and start working again at 3:30 p.m. Until evening..."

Currently, the third support beam construction is being carried out in the grit chamber of the ferry head water intake hub. Although the roof of the grit chamber has blocked most of the scorching sun, the bottom of the grit chamber is not It was drafty and the place was extremely hot and stuffy. In such a hot weather, the steel bars are extremely hot when exposed to the sun. There are many steel bars in the support beams of the grit chamber and they are large in size. It is very hard work to carry, arrange and cut them before tying them.

"Everyone pay attention to safety. The temperature in the tunnel is relatively high. If you feel unwell, come out and take a rest." In the engineering forest bridge maintenance tunnel, safety officer Gao Yueqing wore a safety vest and held a small speaker. ,forwardCall the construction team in the tunnel. Gao Yueqing said that drilling and blasting operations are currently underway in the tunnel. In order to prevent heat stroke caused by suffocating air in the tunnel, he walks around the construction site every day to remind everyone to pay attention to safety.

Drilling and blasting engineer He Chao comes from Yichang, Hubei Province and has 6 years of experience in drilling and blasting. He and his co-workers were drilling holes in the tunnel face with hand drills. "After one working cycle, my clothes are soaked, the dust mask has turned black, and the work in the tunnel is hot and humid. Although the tunnel working face has been continuously ventilated, the temperature inside the tunnel is still as high as 35°C." Master He said. Currently, the construction tunnel face is scheduled to work in three shifts. More than 200 workers enter the tunnel from 5 a.m. to complete a process at 10 a.m., enter the cave from 3 p.m. to complete a process at 8 p.m., and complete a process from 11 p.m. to 4 a.m. Complete the shotcrete support work. Tea lounges are set up at each working surface, fully equipped with functional drinks and heatstroke prevention medicines.

In the foundation pit of the water outlet valve chamber of Kean University, the high temperature of 38°C was scorching everyone. Not long after the work started, the workers’ clothes were soaked. Team leader Zheng Jun said that since the valve chamber is located on the campus of Kean University, the school requires that the main project of the valve chamber be completed, greening restored, and the site cleared before the first batch of freshmen arrive on campus. Currently, he is focusing on investing in equipment and personnel there, racing against time to meet the construction deadline. Seeing the workers turning into "water men" under the high temperature, he can't help but persuade the workers to take a rest.

The municipal public utility group’s Oujiang water diversion project has a total investment of 5.5 billion yuan and a total construction period of 5 years. The project started on April 10, 2021. As of July 15 this year, all four projects There are 31 working surfaces in the bidding section, and the cumulative excavation has reached 47,195.57 meters, completing 58% of the total tunnel length, achieving the goal of completing more than half of the time and completing more than half of the task. Next, more than 1,400 workers on the entire project will continue to exert the spirit of the Oujiang water diversion iron army, not afraid of the "baking" test of high temperatures, fighting against high temperatures, refusing to accept the "heat", grasping the progress, seizing the construction deadline, and striving to complete the project in advance and complete it as soon as possible. Benefit the people.

Original title: Don’t be afraid of the “roasting” test, “steam” the front line (1) and “sweat” the progress! Tribute to the construction workers of the Oujiang water diversion project