Video · Shenzhen Read Shenzhen ｜ "Steel Giant" digging forward!The reporter hit the deepest tunnel project under construction in Shenzhen

Planning, overall planning/Li Tianjun

Text/Yangcheng Evening News all -media reporter Song Wangqun Guo Qi

Video, picture/Yangcheng Evening News all -media reporter Wang Lei Guo Qi

The spring breeze of Shenzhen Binhe Road has always been one of the most congested sections, but this situation will soon be completely improved. A "Iron Giant" weighing 4,800 tons and more than 5 floors is fighting in the underground area of ​​the core area of ​​this city. It is digging forward at a rate of 4-6 meters a day. This "Iron and Steel Giant" is the famous Spring Wind Shield Machine with a proper major country with a diameter of 15.8 meters. It was the largest diameter shield machine in China at the beginning. 24 times the quality of the Long March 5 carrier rocket in my country ...

Spring wind number shield machine excavated 47 meters underground

Recently, a reporter from Yangcheng Evening News entered the deepest part of the Chunfeng Tunnel under construction and interviewed that the Spring Wind Shield Machine has been excavated for 2157 meters and is in a level of 47 meters underground. The shields are expected to achieve tunnel penetration in December next year. The completion of the Chunfeng Tunnel will become the deepest underground tunnel in Shenzhen, which will even exceed the Mom Bay Underwater Tunnel.

The Spring Wind Number Shield Machine excavates 4-6 meters per day

The Chunfeng Tunnel is the first single -hole and double -layer motor vehicle tunnel in Shenzhen. It is located in the underground area of ​​the core area of ​​Luohu District. The buildings are built along the line, and the safety risks are extremely high. The crushing zone of the fault, the highest rock strength can reach 173MPa, which brings great challenges to the management of tool management.

Chen Jianlian, the manager of the Chunfeng Tunnel Project of the China Railway Tunnel Bureau, told Yangcheng Evening News reporter, "The Chunfeng Tunnel needs to pass directly through 28 high -rise buildings, including Shenzhen Railway Station, with 78 buildings on the side, with an average depth of 25 meters. ","

Spring wind number shield machine excavation diameter 15.8 meters, 135 meters long

To complete this major people's livelihood project, the Spring Wind Shield Machine came into being. The Spring Wind Number Shield Machine excavated diameter of 15.80 meters, as long as 135 meters, and a total weight of 4800 tons. It is a "big country heavy weapon" designed and manufactured independently in China. It was successfully started in Shenzhen on August 13, 2019. Top Ten Scientific Communication Incidents of 2019. The total installed power of the Chunfeng Shield is 11,000 kilowatts, which is 10%higher than the most advanced high -speed rail. The total thrust is 24,600 tons, which is 24 times that of my country's Long March 5 carrier rocket.

The reporter learned in the tunnel that the head of such a "steel giant" is a rotating knife plate with 89 rolling knives, 52 conventional cutting knives, 155 normally pressed knives, 36 border spatulas, in 36 border scrape, in the Under the advancement of the powerful hydraulic jack, the rocks in front of the excavation are excreted from the tunnel through the slurry pipe, and the average digging is 4-6 meters per day. Chen Jianli said: "When the rock is high, the knife tray is large. On average, you need to change a knife every 2 meters, and change a scraper every 20-30 meters."

Behind the blade is the assembly machine for hanging and installing tube films, which is responsible for completing the "ring -to -ring" task. During the installation process, the hydraulic jack will retract and start accurately: temporarily retracted when installing pipes to provide sufficient space for the new tube; after the installation connect.

The reporter saw at the scene that the inner wall of the tunnel was spelling from 10 pipes. The thickness of the tube was 65 cm, the lightest piece weighed 5 tons, and the heavier one was 16 tons. As the pipes are made up one by one, the tunnel is also completed.

Although the Spring Wind Shield Machine is large, it has an embroidered needle. At the beginning of 2020, the Chunfeng number shield machine was "passing by" with the pile foundation of the redling roads over the redling road at more than 10 meters underground, and the distance between the two was only 1 meter. Passing 9 meters below the community piles, "For a behemoth with a diameter of more than 5 floors, 135 meters long, and a total weight of 4,800 tons, the distance between this meter is comparable to the underground 'embroidery'." Chen Jianli said.

Accurate navigation benefits from "digital brain"

Spring Wind Number Shield Machine Pipe Film Dressing Machine

The reason why the Chunfeng number shield machine can accurately control the direction and accuracy of the excavation is due to the powerful "digital brain" behind it. Chen Jianjian introduced that the Chunfeng number shield machine has a satellite monitoring and artificial intelligence navigation technology, controlled the accuracy of the excavation, and transmits the various dynamic parameters of the shield machine to the national key laboratory of the shield to excavate in real time.调整参数、刀具选型等，及时纠偏生产过程中出现的问题，逐步提升施工进度；在公司后台专家坐诊指挥下，严格按“决策指导层、诊断指令层、分析反馈层、操作执行层”四The construction of a hierarchy is "one -ring, one research", "one ring and one summary". "We not only grasp the accuracy of tunnel excavation in real time, but we also use satellite real -time monitoring and perception of various parameters of the buildings around the tunnel surface to ensure construction safety."

The reporter learned that the Chunfeng Tunnel project team jointly established academician workstations in the country's first pioneering and national key laboratory to establish the first star land monitoring platform in Shenzhen to carry out millimeter -level safety control through satellites.

More than 400 workers fought on the front line day and night

At present, more than 400 workers fight on the line inside and outside the Chunfeng Tunnel to speed up the progress of the project day and night. The reporter learned that except for peripheral workers, there were more than 40 operation teams of the Spring Wind Shield Machine, divided into two classes. The team members from the post -70s to the post -90s, meticulous division of labor, all of them were controller in their posts. After the 80s, Chen Jiao came from Sichuan. When the shield machine with a weighed 620 tons arrived in Shenzhen, how to install the front face of the shield machine became a big problem. The dragon door hanging girl with more than ten years of cranes was not allowed to be kept, and she controlled the huge dragon door crane to hang a knife plate of 15.8 meters high, 2.8 meters thick, and 620 tons, and then accurately assembled in the front of the shield machine. Chen Jiao's husband Li Guofu is responsible for the ground command. The cooperation between the two can be described as seamless. Therefore, the couple are also called "God Hangs" by the workers.

The rainbow lighting in the Chunfeng Tunnel plays a role in regulating the working atmosphere

The reporter saw in the completed Chunfeng Tunnel that because workers worked in the underground tunnel all year round, they faced a single gray every day, which was not conducive to the mental health of workers. To this end, the Chunfeng Tunnel Project Department of the China Railway Tunnel Bureau has been built in the tunnel, setting a blue light every 200 meters, and a colorful light every 1 kilometer. Colorful lights can not only provide wizard for workers, but also dress up the working environment of workers.

It is expected to achieve penetration next year

Shenzhen citizens who drove through the spring breeze of Binhe Road knew that the traffic here was huge. From the four lanes of Binhe Road to the two lanes on the elevated, coupled with the high -rise buildings on both sides of the road, it did not have the conditions to broaden the road surface, which became the most in Shenzhen. One of the congested road sections can be described as on the list on the congestion level of the Shenzhen Road Transportation Index. In order to improve this situation, through comprehensive planning, the innovative design of the Chunfeng Tunnel is the first motor vehicle tunnel in Shenzhen with the "single hole and double -layer" structure. The speed is 60km/h, which is a special passage for small passenger cars.

Chen Jian introduced that the shield machine has been excavated for 2157 meters, and the shield machine is in the piercing area, with the remaining 1446 meters. In the next stage, the shield machine continues to excavate, and the open section of the east side continues to promote the construction of enclosure structures, earthwork, and main structure. It is expected that tunnel penetration will be achieved in December next year.

【Engineering Business Card】

The Chunfeng Tunnel is an important part of the "South Ring" fast road system in Shenzhen. The project is 5.08 kilometers in length, and the shield section is 3603 meters long. The second phase of the foundation pit is carried out in earthwork, and the third phase is carried out. The spring breeze tunnel is "V" shape, and the deepest part is 49 meters underground. In order to solve the drainage problem, there is a pool in the deepest part of the tunnel, and it is equipped with a pump to drain the water on both sides of the tunnel. The amount of water pumping per hour can reach 450 square meters. Not only that, there is a safe passage every 60 meters in the tunnel. After the project is completed, the "Spring Wind Road Elevated+Spring Wind Tunnel" corridor will be formed to open up the transportation bottleneck in the spring wind section, effectively solve the problem of traffic congestion of the Spring Wind Road elevated traffic, greatly improve the efficiency of traffic operation, and effectively alleviate traffic congestion in the southern region of Luohu District.

Source | Yangcheng Evening News • Yangcheng School

Responsible editor | Li Cheng and Weiqin

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