IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 5 - FLUVIAL HYDRAULICS AND RIVER MANAGEMENT : Restoration of Riffles and Pools within Improved Channels in Meandering Rock-bed Rivers
Restoration of Riffles and Pools within Improved Channels in Meandering Rock-bed Rivers
Author : Hiroshi Hayakawa, Kosei Natsui, Norihiko Muneta, Yasuhiro Yoshikawa and Yasuharu Watanabe
For preserving a comfortable river ecosystem, it is important to protect and restore the riffles and pools within engineered channels, where should play a role in the habitat diversity and complexity. It will be no easy task to restore and preserve the pool-riffle in flat rock-bed river which is lightly covered with gravels, as contrasted with in the gravel river. In the Abashiri River, the improvement by channel deepening projects with rock-bed has been carried out, in which was introduced to construct artificial pools for restoration of the riffles and pools. This study verifies the situation of the present and the future restoration by field survey and undistorted model experiment approach. It shows that point bars were formed on the opposite shore of artificial pools, and riffles were in the downstream of the pools. It is verified that the artificial pools did not deposit overall with most of the flow concentrated in the pools when the flood occurred. Therefore, it is possible to preserve the artificial pools and riffles naturally.
File Size : 1,504,114 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
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