Grand Canal Leverages Digital Technology for Heritage Preservation

China's Grand Canal, a waterway with 2,500 years of history, is being preserved through advanced digital technologies. Alongside traditional maintenance, methods like laser scanning assess structural integrity and sensors monitor for movement, all analyzed through data. This approach ensures the vitality and upkeep of this ancient route.

At Zhejiang University, engineers are developing a digital protection project for the Gongchen Bridge using photogrammetry. This creates a millimeter-accurate 3D digital replica, allowing for condition monitoring without physical intervention. The vast amounts of data generated are managed by cluster computing systems, aiming to transform fragile physical artifacts into permanent digital assets.

Hangzhou's 110-kilometer section of the canal faces complex management challenges. The "Smart Canal" system integrates data from a "Water, Land, Satellite, and Sky" monitoring network. However, physical inspections and "fingertip inspection" methods, comparing image pairs for changes, remain crucial.

Monitoring modules, described as "digital armor," are installed on boundary markers. At historical sites like the Fengshan Water City Gate, precise monitoring includes early warning systems with color-coded danger levels. Inclination sensors act as nerve endings, transmitting data 24/7, benefiting both experts and the millions of visitors to this significant heritage site.