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An experimental study of the effects of classifying dredged dam sediments on their transport
ID：114 View Protection：ATTENDEE Updated Time：2025-11-03 17:12:53 Hits：159 Oral Presentation

Start Time：2025-11-05 15:30（Asia/Shanghai）

Duration：20min

Session：S2 Session 2： River and Coastal Scour & Erosion » S2-1Session 2（5th）

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Abstract
This study investigates the effects of classifying dredged dam sediments on their transport properties. Using a small recirculating flume, experiments were conducted to analyze the erosion and breakdown of placed sediment models composed of silica sand, non-plastic silt, and kaolin. Various mixing ratios were tested, focusing on the influence of fine content ratio (Fc) and clay content ratio (Cc). Results indicate that the erosion resistance of placed sediment models is significantly affected by the clay content ratio (Cc), with higher ratios leading to increased resistance. Additionally, sediment classification and placement methods were explored, revealing that horizontally layered configurations, with sand in the lower layer and clay in the upper layer, increased erodibility. These findings suggest that proper classification and placement of dredged dam sediments can enhance their transport and utilization downstream, addressing issues of riverbed degradation and coastal erosion. Future research should focus on long-term sediment consolidation and full-scale effectiveness evaluations.
Keywords
dredged dam sediment,placed sediment,sediment transport,clay content
Speaker
Hiroki Oguma
Senior Researcher Technical Research Institute；Toyo Construction

Submission Author
Hiroki Oguma Technical Research Institute；Toyo Construction
Junji Miyamoto Technical Research Institute；Toyo Construction
Nao Ogawa Technical Research Institute；Toyo Construction
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Important Date

  • Conference Date

    Nov 04

    2025

    to

    Nov 07

    2025

  • Oct 20 2025

    Abstract Submission Deadline

  • Oct 20 2025

    Draft paper submission deadline

  • Oct 30 2025

    Draft Paper Acceptance Notification

  • Nov 07 2025

    Registration deadline

Sponsored By
Hehai University
Chongqing Jiaotong University
Organized By
Hehai University
Chongqing Jiaotong University
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