A STUDY ON CHANGES IN CHANNEL GEOMETRY AND DAMAGE RISK POTENTIAL DURING A FLOW RATE CHANGE BASED ON STABLE RIVER CONDITIONS

DOI Web Site 4 References

Bibliographic Information

Other Title
  • 安定河道の条件を基準とした河道応答と流量変化時の被災リスクポテンシャルの把握に関する実験的検討

Abstract

<p> In this study, an experimental investigation was conducted to examine the response of a river channel with a risk for failure. We used the condition of a stable channel occurrence as a criterion. We conducted experiments where the river width decreased toward the stable channel. We examined the differences in channel response within and outside the stable channel condition. We also conducted experiments when the flow rate varied from the channel-forming flow. We examined the response characteristics of the river channel. The results were compared with stable channel conditions. The results showed that the risk potential for damage to riverbanks and revetments increased in the following cases. (1) When the K value exceeds the stable channel condition due to increased flow rate, the riverbank or revetment restrains the channel's response to widening. (2) When the K value is near the boundary of the stable channel area with two rows of sandbars, the river channel transitions to the single-row sandbar area and the riverbed is degraded.</p>

Journal

References(4)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top