Illustrated by Zhang Weilin.
"Face brushing" in and out of the construction site, AI real-time monitoring, tower crane monitoring, construction robots instead of manual work ......This series of measures full of scientific and technological content has been widely used in the construction sites of key projects in the province.
With the popularization and application of digital technology in the field of transportation infrastructure and urban construction, the digitalization, refinement, collaboration and full life cycle of engineering have become the major trends of industry development. Nowadays, not only do many construction sites have "smart brains", but also equipment can "learn to Xi" and "think", and the operation and management are more efficient. Under the empowerment of the "smart brain", the construction of key projects in the province is promoted to press the "fast forward button" and run out of "acceleration".
Digital intelligence empowerment turns "craftsmanship" into "craftsmanship".
In tunneling, the fully computerized three-arm drilling rig can realize automatic positioning and precise drilling of excavationThe full-section micro-step switched arch installation trolley only uses a remote-controlled intelligent controller to complete the automatic hydraulic switching and a series of installation operations of full-section and two-step constructionThe integrated trolley for automatic installation of waterproof board and steel bar realizes the functions of cloth transportation, precise positioning and hydraulic jacking of tunnel geotextiles, wide waterproof boards and steel reinforcement components, which greatly reduces the labor intensityThe intelligent two-lining trolley integrates the functions of automatic rail feeding, mold grouting, high-frequency dense vibration, etc., which can realize visual pouring and anti-hollowing early warning functions, and the intelligent curing trolley can sense the temperature and humidity of the concrete surface, and automatically maintain the constant temperature through real-time monitoring of temperature.
With the advent of the digital economy, digitalization and informatization are widely used in various scenarios in the field of infrastructure construction. During the construction of the Chongqing-Kunming high-speed railway, 3D scanning of the tunnel and BIM (Building Information Modeling) technology can control the on-site construction situation in real time through human-machine information transmission and interaction. Part of the information technology can not only provide the data of the initial section of the tunnel, but also connect with the tunnel concrete material system, through the comparative analysis of multiple data, the quality closure results of the tunnel pouring link can be obtained, and the quality and speed of the project construction can be guaranteed. At the same time, the integrated application of GPS positioning system and visual monitoring system can also realize the multi-dimensional perception of operators' points, paths and status, and escort the safety of major engineering construction and personnel in all scenarios.
In the town to be supplemented in Huize County, Qujing City, the 12th Bureau of China Railway empowered the construction of the project with innovation to build a mechanized, intelligent and information-based demonstration project for tunnel construction in an all-round way. With a total length of 6,327 meters, the Ningjingli Tunnel of the Chongqing-Kunming High-speed Railway is a key control project of the Yunnan-Guizhou section of the line. During the construction of the tunnel, the construction personnel took a "two-pronged approach" from both hard power and soft power to continuously improve the tunnel excavation efficiency and tunneling safety.
In terms of hardware, each tunnel mouth of the pipeline section is equipped with an information center and a dispatching command center, which can realize the visual management of the tunnel face, and the staff innovation studio provides soft power support for us to tackle technical problems and carry out tunnel mechanized construction. The person in charge of the six standards and one branch of the Chongqing-Kunming high-speed railway of the 12th Bureau of China Railway told reporters that since the project entered the site, the technical team of the construction unit has successively configured and applied advanced geological drilling rigs, full-computer three-arm rock drilling trolleys, full-section micro-step switching arch installation trolleys, self-propelled hydraulic inverted arch trestles and the main intelligent waterproof plate steel laying trolley, lining trolley and maintenance trolley and other full-process tooling equipment, with these advanced equipment, tunnel construction has entered the era of the original "technology" The era of "technology", and the construction operation surface under the mechanization also creates conditions for safe, fast and high-quality construction of the tunnel.
The application scenario of the construction site unlocks "digital intelligent construction".
For safe operation, please wear a compliant helmet. "Walking into the construction site of the Lincang Vocational College project jointly built by China Railway Development and Investment Group and China Railway Ninth Bureau Group, the smart system is sending out an alarm sound to remind the admission staff to correct the violations and wear safety helmets.
The Lincang Vocational College project is the largest education investment project in the province's "four hundred" key construction projects in 2021, and it is also the province's "14th Five-Year Plan" education power promotion project. Since the beginning of this year, the Yunnan Lincang Vocational College project has actively explored and promoted the construction of "smart construction site", promoted the deep integration and development of digital technology and project construction, and put into use "smart construction site" modules including holographic digital sand table, 5G high-definition ** monitoring, smart broadcasting, environmental monitoring, fog cannon spraying, etc., to achieve effective control of major risk sources, build green construction sites with scientific and technological innovation, and help safe construction.
The reporter saw at the construction site that the tower crane deployed a 720-degree three-dimensional monitoring system, and each tower crane was equipped with 5G terminals, zoom cameras and other equipment to achieve 360-degree safety monitoring and reduce the risk of tower crane safety accidents. The site management personnel can implement all-weather real-time high-definition monitoring of key areas such as the construction site through the high-definition network camera installed in the construction site, and through the intelligent broadcasting system, remotely and timely stop the illegal operation of the on-site operators, effectively stop the illegal operation of the construction site, and implement circular rolling inspections and key inspections on the construction site.
In addition, a face recognition identification system is also installed at the entrance and exit of the project gate, and the turnstiles for construction workers to enter the construction area need to "brush their faces" for identification, and the information of each construction personnel entering the site is displayed on the LCD screen, so as to ensure the safety of construction site personnel by standardizing the entry and exit of personnel. The real-name management system of the project records the basic information, working hours, and whereabouts of construction workers in detail, and automatically counts and analyzes the working hours data of each stage. At the same time, it has formed an effective connection with the Lincang Municipal Bureau of Housing and Urban-Rural Development and the China Railway Co., Ltd. labor and employment management system, and the labor and employment management data are compatible with each other, and the functions are shared with each other, so as to realize the on-site control and dynamic supervision of each project, and truly realize the purpose of "science and technology leading and intelligent construction" under the premise of cost saving.
In order to actively respond to the requirements of the ecological civilization construction goal, the project department has installed dust and noise monitoring system TSP, fog cannon spray system, vehicle flushing monitoring and other equipment at the construction site, and through the multi-system digital information fusion application, it can observe the temperature, humidity and PM2 of the construction site in real time, remotely and automatically on the smart chemical site system5 and other data. When the environmental pollution value exceeds the standard, the system will automatically alarm and take effective measures such as sprinkling water and dust reduction on the construction site in time.
According to the project leader of Lincang Vocational College, as the first "smart site" system in Lincang City, a series of "smart" measures such as labor management system, safety management system, quality management system, and production management system have solved many key technical problems. The application of "smart construction site" improves the interaction between various stakeholders and personnel of the project in a more intelligent way, improves the accuracy, efficiency, flexibility and response speed of interaction, makes the construction site more comprehensive and intelligent, greatly improves the work efficiency of on-site operators, and realizes the role of management upgrading, shortening the construction period and saving costs.
Yunnan Net reporter Hu Xiaorong.