PIANC Smart Rivers 2022

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Inland waterway maintenance could guarantee channel dimension and maintain navigation conditions. By the end of 2020, China had 127700 kilometers of inland waterways, including 67300 kilometers of grade waterways. With the continuous increase of navigation mileage, inland waterway maintenance was also gradually heavy and frequent. Waterway maintaining would inevitably disturb the ecology of navigable waters and cause adverse environment effects. For example, cleaning up navigation aids produced waste water and garbage; channel dredging could destroy fish habitat; repairing regulating structures would damage vegetation. Therefore, it was necessary to implement the green maintenance of inland waterway to reduce the environmental impact in the maintenance process. In May 2021, the Ministry of transport issued the technical guide for green maintenance of inland waterways. However, at present some scholars have carried out research on individual channel maintenance technology, but the research on green channel maintenance was not systematic and comprehensive. Aiming at this problem, this paper studied the concept and connotation of green maintenance of inland waterway, according to the concept of green transportation and green channel. Secondly, the study constructed the technical framework of green maintenance based on the environmental impact analysis of channel maintenance. According to the content of channel maintenance, the technical system included green maintenance technology of navigation aids, maintenance dredging technology, channel regulation structures repairing and other technologies. In terms of environmental factors, the technical system contained ecological protection technology, water and acoustic environment protection technology, solid waste prevention & control technology and so on. An last, implementation path in green maintenance of inland waterway was addressed including standard-setting, establishing system management, technology research and development , etc.

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