書誌事項
- タイトル別名
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- FIELD TRIAL AGAINST SCOURING OF SOFT ROCK RIVERBED IN THE MUKA RIVER OF THE TOKORO RIVER SYSTEM AND ITS EFFICACY
抄録
<p>In the Muka River of the Tokoro River system, riverbed scouring has been progressing, influenced by reduction in the river width as a result of river channel improvements, reduction in sediment supply from the upper reaches and increases in discharge in recent years. As the result of riverbed scouring, soft rock and volcanic ash layers have been exposed. The progressive riverbed scouring has caused the banks to lose their ability to protect against flooding and has caused the bridge piers to have inadequate embedment depth. These have resulted in a loss of flood safety. To explore effective measures against riverbed scouring, the characteristics of river bed scouring were investigated. To retard the presently progressing riverbed degradation and to plan for a fundamental countermeasure, field trial was done in which the low-water channel was widened and the exposed soft rock was covered by gravel. This paper reports the results of investigation and field trial, and examines the efficacy of such construction.</p>
収録刊行物
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- 河川技術論文集
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河川技術論文集 20 (0), 229-234, 2014
公益社団法人 土木学会
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詳細情報 詳細情報について
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- CRID
- 1390295603316005760
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- NII論文ID
- 120007174224
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- ISSN
- 24366714
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用可