"One board and one gear" helps the quality upgrade of tunnel construction

Correspondent Chen Yingxia Li Yanlin

Design vertical diagram, deformation monitoring records, high -elevation concrete intensity report ... a key information of a tunnel construction becomes visual electronic file, and the "one board, one file" management of the Chongqing Yangtze River Tunnel of the China Railway 14th Bureau The information system is updated in real time.

"One Board and One File" management information system

The Chongqing Yangtze River Tunnel is the first high -speed rail on the upper reaches of the Yangtze River and the longest underwater high -speed rail tunnel in the country. In order to ensure the safety and quality of the entire process of tunnel construction, the project establishes the "one board, one file" management information system. "One board" refers to the molding concrete built by the tunnel lining, and the vertical length is generally 12 meters. Through this system, important construction materials are implemented in time, and the management requirements of important links are implemented, and the quality of tunnel lining is improved.

At the construction site, the technician was taking pictures of the arch wall lining of the tunnel just poured. Each board file includes 24 numbers, which records the entire process data of the construction of tunnel construction from survey and design, construction construction to later acceptance and operation and maintenance. Each construction link needs to complete the upload of electronic files within the specified time, and the QR code generated at the same time will also be printed and pasted at the construction site. Each board like this has established an independent file, and the project department has uploaded 313 boards. From the import of tunnels to the current construction of 3.75 kilometers, each board is uploaded to the system with detailed data.

In the "one board, one file" information center, the technical supervisor of the project is reviewing the image data of the tunnel construction on the day of the tunnel construction, clearing records, wall prevention and drainage system images, concrete appearance records ... The mileage of this board is not clean. This section of construction is unqualified. The information shows that the second team of the tunnel shelf team can be rectified quickly! "After discovering the flaws in the construction, he immediately notified the on -site technician and directly found the corresponding team. It is required to rectify the scarce period within a time limit to ensure that the quality of the process is controllable.

By using the "one board, one file" management model, the various processes of the construction of the Guizhou Railway Tunnel are clearer and clear. With the help of all links and data data of each process and files, a complete set of 4 stages from design to operation and maintenance , Long -term quality supervision mechanism of 24 links. Since the construction of the tunnel, the builders have rectified 94 hidden dangers at the site of the system, and the project acceptance rate has increased to more than 95%. In July of this year, in the first half of the owner's credit evaluation assessment in the first half of 2022, the project scored 300 points and won the "A+" rating in one fell swoop.

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