Core Viewpoint - The Yangtze River, as China's largest river and a vital inland shipping route, is undergoing significant improvements to enhance its navigational capacity, particularly in the Jingjiang section, with the second phase of the channel renovation set to commence by the end of 2024 and complete by the end of this year [1][16]. Group 1: Project Overview - The Jingjiang section's renovation aims to maintain a stable water depth of 4.5 meters even during low water periods, allowing 5,000-ton vessels to navigate year-round from the Yangtze River estuary to Chongqing [10][23]. - The project includes both dredging to remove sediment and protective measures to prevent erosion, ensuring the channel remains navigable and safe [12][24]. Group 2: Dredging Techniques - The dredging process utilizes a "dredging ship" equipped with large iron rakes to stir up sediment, which is then sucked into the ship's hold, functioning as a mobile "riverbed vacuum" [4][6]. - The dredging is crucial due to the river's winding nature, where sediment can accumulate, especially during low water periods, creating obstacles for navigation [8][10]. Group 3: Erosion Control Measures - Erosion control involves placing protective layers made of woven fabric and concrete blocks along vulnerable riverbanks, effectively acting as a "blanket" to prevent soil erosion [12][14]. - The project also incorporates eco-friendly structures to protect rare fish species, ensuring that construction activities do not disrupt local ecosystems [16][30]. Group 4: Ecological Considerations - The renovation project is designed to enhance biodiversity by creating habitats for aquatic life, such as artificial reefs, while maintaining the navigational integrity of the river [16][30]. - The use of innovative ecological bank protection structures, including tiered designs, helps dissipate wave energy and supports plant growth, contributing to a greener riverbank [28][30].