Xinjiang Dashixia: 3D technology "prints" a smart dam-Guangzhou International 3D Printing Exhibition|

On the western frontier of the motherland, in the Dashi Gorge Valley of Aksu Prefecture, Xinjiang, a 247-meter-high smart dam, the Xinjiang Dashi Gorge Water Control Project, is constantly growing and rising majestically.



This "magic" world's tallest face-faced sand-gravel dam is another hydropower monument dedicated to the world by China Energy Construction Gezhouba Group using "3D printing" technology, and will add "green wings" to the high-quality economic and social development of Xinjiang. .
▶Project construction site◀



"3D printing" dam: China's infrastructure continues to climb to the top of technology



Walking into the Dashi Gorge, the machines roared one after another, breaking the tranquility of the barren mountains and Gobi.



At the site of the Dashixia Water Control Project, thousands of workers, hundreds of construction vehicles and large-scale machinery and equipment are refreshing the "progress bar" of the dam construction in an orderly and orderly manner. ——This is a super-large "3D printing" scene.



What kind of magical "black technology" can "print" a 247-meter-high behemoth?



Li Dongfei, manager of the Dashixia 1 bid project department, explained the secret of "3D printing" to reporters: "The application of 3D printing technology in the Dashixia water conservancy project is not to directly print a complete hydropower station through a huge machine, but to The engineering intelligence cloud platform uses computer models to 'decompose' the dam, slice it into multiple different construction steps, complete the work layer by layer, and achieve the overall effect of 3D printing step by step."
▶Engineering Smart Cloud Platform◀



At the Dashixia project site, advanced digitization, intelligence and the Internet of Things make the Gobi Barren Valley glow with the color of modern technology. In the monitoring center of the smart construction site of the project, the reporter saw that various data such as the dam rolling path, rolling times, rolling pressure, and internal temperature of the concrete were dynamically displayed in the monitoring center. According to reports, after the launch of the engineering smart cloud platform in July, the project construction will also realize unmanned driving, unmanned rolling, intelligent temperature control, virtual simulation... The media amazed that artificial intelligence + 3D printing has made Chinese architecture and Chinese construction continue to climb to the top of new technology!
▶Engineering BIM Center◀



"We are building a smart management cloud platform for the construction of Dashixia Water Control Project based on 'BIM+GIS (Geographic Information System)+IOT+Blockchain+AR (Augmented Reality)' and other multi-technology integration." Dashixia Project Company Technology Management Department Minister Wang Fengbin introduced that on the basis of traditional water conservancy projects, the platform uses advanced technologies such as cloud computing, big data, Internet of Things, mobile Internet, artificial intelligence, and virtual simulation to develop and cover "project construction management, dam intelligent construction, It is a large-scale application system for eight core businesses of reservoir scientific dispatch, engineering safety monitoring, intelligent analysis and decision-making, rapid emergency response, integrated operation and maintenance, and comprehensive transaction management.
▶Dam BIM model◀



Automatic, remote, mobile and convenient management and control technology turns the entire construction site into a giant "3D printer". How was this giant "3D printer" made?



According to reports, as early as October 2020, at the beginning of the Dashixia project, Gezhouba people began to plan the application of smart technology in Dashixia. To this end, the project company, the project department, together with scientific research institutes and post-doctoral workstations formed a strong consulting team, and carried out research on 9 major scientific research projects, 16 subtopics, and 13 general scientific research projects, and successively in digital information technology services. Invested more than 80 million yuan to assemble this giant "3D printer".



"Electrocardiograph": real-time pulse diagnosis for dam construction



How to ensure the quality of the "3D printed" dam is always controlled during the "printing" process? Accurate data support is the key. It is the dam's "electrocardiogram detector" - the additional quality method, which is always used to check the pulse of the dam's construction and ensure the health of the dam.
▶Project construction site◀



When you walk into the construction site of the Dashixia project, you will find that digital and intelligent elements are everywhere: the construction workers drive the sand and gravel dump truck close to the weighing room, and the traffic pole automatically rises; when passing the floor scale, the vehicle is automatically displayed on the monitoring screen. And the weight of the sand and gravel to be transported; from the weighing room, the intelligent water adding system automatically starts the spray function, and the spray system will automatically adjust the amount of water sprayed on the sand and gravel under different temperature conditions.



When they came to the filling area of the dam, the technicians pulled 7 large iron blocks of different masses to a certain height and let them fall freely towards the filled dam body. The sensor on the bearing plate not far away automatically collected the vibration wave The data can be obtained by computer analysis to obtain the dry density of the filling body, so as to direct the rolling equipment to carry out the next operation. This modern detection method is called "additional mass method".
▶Project construction site◀



"The traditional method is to carry out artificial digging density test, but the detection efficiency is low, the accuracy is not high, and it is destructive. The additional mass method is equivalent to connecting an ECG detector to the dam. We obtained the result by measuring the fluctuation. 'ECG', you can see the density of the dam filling and monitor the current health of the dam." Xu Shumei, a technician who has worked in Xinjiang Uluwati, Artash and other projects for 24 years, is very concerned about this convenient New technology is very confident.



"The additional quality method can replace more than 60% of the pit inspection volume, and can reduce the inspection time by more than 50%." Xu Shumei said that there is no need to manually carry out pit inspection every time a layer is rolled, which saves a lot of manpower and time.



"Concrete ID Card": Control the pouring quality of each warehouse



The wood that hugs each other is born at the end of the hair; the platform of nine layers starts from the earth. "3D printing" dam, "concrete ID card" is a bright and unique job to ensure the quality control of the concrete of each warehouse dam.



According to the on-site construction personnel, before the concrete is officially poured, the construction personnel will select a representative concrete mixture and put it into the test mold, and send it to the laboratory for testing after forming and demoulding.
▶Concrete pouring◀



In order to ensure that the whole process of the test block from sampling to detection is under control, the intelligent management cloud platform applied in the Dashixia Water Control Project is equipped with an "identity card" for the concrete test block, and the human brain and the computer are "same frequency" between the square-inch screens. Unified implementation of information management and control.



In layman's terms, it is the "identity registration" of each warehouse concrete test block: construction personnel, raw materials, mix ratio, equipment, statistical analysis and other module data are entered into the intelligent management cloud platform one by one, and the corresponding business operation procedures are set up. Finally, an "identity card" is generated.
▶Intelligent control of the whole process of concrete quality◀



With this "identity card", concrete quality can be traced at any time. If there is a quality defect, it can be investigated at any time where the problem is, and traceability and rectification can be realized immediately, forming a closed-loop management of the whole process of "construction-feedback-planning".



Turning synergistic advantages into concrete results, and empowering traditional processes with new technologies, in the eyes of Gezhouba builders, there is no so-called traditional industry, only constant innovation and progress.



"In the past, during the construction of hydropower stations, the proportion of concrete was recorded manually. Now, the smart management cloud platform assigns an "identity card" to each warehouse of concrete raw materials, and direct supervision can be carried out under the "eyelid", which greatly improves the efficiency of supervision. , to help the dam grow "highly".
Aksu's melting ice and snow has lightly touched the important weapons of a new era. It is witnessing the new journey of Gezhouba people's participation in the construction of Damei Xinjiang and helping the frontier's green and low-carbon development. The continuous stream of clean electricity nurtured by the majestic waters will light up the lights of thousands of homes on the border. A beautiful picture of practicing the "Belt and Road" initiative in the new era, benefiting the people in the frontier, and enhancing national unity, is slowly spreading in the snow-capped mountains and clouds. between.