Our reporter He Liang
Recently, the Pearl River Delta Water Resources Allocation Project (hereinafter referred to as the Pearl River Delta Project), one of the country's 172 major water conservancy projects for water conservation and water supply deployed by the State Council and a major water conservancy infrastructure in the Guangdong-Hong Kong-Macao Greater Bay Area, has been fully opened to water. Behind this water transmission project spanning 113.2 kilometers, there is also a digital water transmission project running along with it. It is the underground digital "hidden dragon" of the Pearl River Delta project's full life cycle BIM+GIS system platform project construction.
In 2019, when the Pearl River Delta project officially started, the smart engineering project during the construction period jointly undertaken by the General Institute of Water Resources and Hydropower Planning and Design of the Ministry of Water Resources and the Shanghai Survey and Design Institute Co., Ltd. (hereinafter referred to as the Three Gorges Shanghai Institute) affiliated to the Three Gorges Group—— The BIM+GIS system platform (Phase I) project started construction simultaneously. Three years later, all 48 shield tunnels in the Pearl River Delta project were successfully completed, and the construction of the BIM+GIS system platform (Phase II) project, a smart engineering project during the operation period, began. After more than five years, a digital water conservancy project covering the entire life cycle of the project has gradually emerged. Digital technology has given wisdom to engineering construction and operation and maintenance.
Configure a "CT machine" for project construction
"The full life cycle BIM+GIS system platform focuses on providing auxiliary decision-making for project construction." Deng Peng, deputy director of the Intelligent Engineering Research Institute of the Three Gorges Institute of Shanghai, told reporters that the platform integrates "people, machines, materials, methods, and environment" The element monitoring system can be integrated with core management data such as safety, quality, progress, and investment during the project construction process to provide full situational awareness of the project construction process.
The Pearl River Delta region has dense river networks, intertwined road networks, and dense buildings. The Pearl River Delta project stretches for more than 100 kilometers and passes through the core urban agglomeration of the Pearl River Delta. It passes through 4 high-speed railways, 8 subways, 12 expressways, and 16 rivers, lakes and seas. In order to protect the ecology, reduce land occupation, and reserve surface and shallow underground space resources for the future development of the Bay Area, the Pearl River Delta Project innovatively chose the ecological water diversion plan of "going underground", that is, deep-buried tunnel water transfer Way. However, the construction of water pipelines using deeply buried shields 40 to 60 meters underground brings many problems to project construction and operation.
"The geological conditions in the Pearl River Delta region are very complex. It is known as the 'Geological Museum'. Long-distance shield construction is very risky. The surrounding environment is very sensitive. Slight changes in groundwater and other factors may cause deformation of surrounding buildings." Deng Peng told reporters, In order to allow project builders to have a clear understanding of underground operations, the full life cycle BIM+GIS system platform provides a solution.
On the full life cycle BIM+GIS system platform, engineers can open the special shield scene with geographical information data and intuitively see the progress of the shield machine's underground excavation. "Wherever the shield machine goes, its superstructure and changes in the surface appearance can be displayed in real time on the system platform." Deng Peng said that this is equivalent to configuring a "CT machine" for construction, so that the ground beneath the The changes can be seen at a glance, and the builders can intuitively understand the underground construction progress and abnormal changes around the project.
"The platform reflects the project construction progress, image appearance and on-site safety monitoring results in real time in a three-dimensional form. Compared with traditional paper records and chart record analysis, the platform is more efficient and timely, and realizes the real-time status of the project construction process. Mapping and future risk prediction." Deng Peng told reporters that this is the first comprehensive use of the full life cycle BIM+GIS system platform in the construction process of a large water conservancy project. It does not completely replace the original management methods, but it plays a greater role in improving the efficiency of project construction management.
Explore new models of water conservancy project data management
Smart water conservancy construction is one of the ways to promote high-quality development of water conservancy in the new stage, and there are high hopes for empowering water conservancy projects through digital technology.
"From an engineering practice perspective, the construction and application of the full life cycle BIM+GIS system platform has explored a new construction model for smart water conservancy construction." Deng Peng told reporters, "In the construction of smart water conservancy projects, true and standardized data are particularly valuable. Previously, "Although digital technology has been applied in some water conservancy projects, most of the participating units work independently, the application systems are scattered, and the data chimneys are numerous, so the actual application effect is very limited."
In the Pearl River Delta project, the exploration of the application of digital technology is unique. "We have achieved standardized data creation, integration, governance and services in terms of data governance. Through the construction of systems and standards, we have standardized the responsibilities of all parties involved in the project construction data management process." Deng Peng said that in the project data management In the platform, the construction unit is responsible for creating data, the project supervision unit reviews the accuracy of the data, and the digital engineering consulting unit reviews the data standardization to ensure the validity and usability of the imported data. This is precisely the missing link in previous similar water conservancy project construction.
"With the development of social economy, the scale of water conservancy project construction is getting larger and larger, and the project investment, construction cycle and number of participating units have frequently broken historical records. During the construction process of these large-scale water conservancy projects, how to standardize and manage the large and complex construction data And utilization? Institutional standards are particularly important." Deng Peng suggested that the data management model explored by the Pearl River Delta Project be actively promoted to provide valuable experience for the construction of major water conservancy projects in other countries.
(Science and Technology Daily)