Project Background：
Shield tunneling machine, known as the "strongest pangolin" and the "heavy tool" for digging mountains and tunnels, is the core equipment in infrastructure construction, and it is also a symbol of the manufacturing level of a country's underground construction equipment.
The shield tunneling machine is equivalent to a mobile tunnel workshop providing one-stop solution for excavation、hardening and track laying etc., The underground operating environment involves multiple factors such as geology, hydrology, and pressure etc., it is complex and changeable. The high temperature, high humidity, and airtight working environment makes the work difficult and risky. In addition, the shield tunneling machine needs to monitor and analyze a large number of scattered construction data in real time at each point of excavation to determine the best focus of the next excavation. When the machine has failure, it is difficult to find out, the construction period will be delayed and the cost is huge.
Customer Requirements
Through stable and high-speed industrial-grade 5G routers, ultilizing the 5G network's advantages of high bandwidth, low latency, high transmission rate, and high coordination , can realize the 5G industrial application scenes includes 5G+shield tunneling machine sensor data acquisition and transmission, 5G+UWB precise positioning, and 5G+personnel behavior analysis etc., Ensuring smooth 5G communications in tunneling process , realize real-time monitoring of equipment operation process & construction environment and stable data transmission.
1、5G+ sensor data acquisition and transmission: the shield tunneling machine is equipped with many sensors all over the body, which can sense the changes of the environment in the tunnel. If there are geological changes in the tunneling process, it is necessary to change the operation in time, otherwise it will lead to the failure of the cutter head. The application of 5G technology makes the "sensing nerve" more sensitive, reduces the failure rate of data transmission by 99.99%, and enables second level precision parameter control. It can not only analyze vibration data in real time, and quickly feed back to the ground big data terminal, but also analyze massive scattered information through the decision center, and give Fault pre-warning in the first place.
2、5G+UWB precise positioning technology: high precision positioning of workers, materials and machines. Construction workers can wear smart helmets equipped with 5G modules to "live broadcast" the construction site and send the pictures back to the control platform, so that the management staff can guide the front line to carry out equipment maintenance or transmit construction instructions in the first place.
3、5G+ personnel behavior analysis: The binocular UVC camera and behavior analysis algorithm are used to monitor the driving state of the drivers, analyze his actions such as eye closing, yawning, nodding etc., and judge whether he is driving in fatigue, thus improving the safety guarantee of the driver.
In April 2021, 5G intelligent shield tunneling technology accelerating the successful completion of "Sinan Station -- Nancao Station" of Zhengzhou Metro Line 3. In August 2021, the technology was successfully replicated in The Tonghuai Station project of Zhengzhou Metro Line 6.
In the future, relying on this “1+1+N” overall solution(1 of 5G private network, 1 of intelligent decision center, N of 5G applications), the smart shield tunneling 5G technology application innovation base will be built. This intelligent technology will be gradually promoted to in the whole industry, and more extensive exploration will be carried out in tunnel construction with higher construction difficulty.
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