Occurrence and Geometric Characteristic of Step-Pool Morphology

阶梯池形貌的发生及几何特征

• 批准号: 60550365
• 负责人: EGASHIRA Shinji
• 金额: $ 1.15万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60550365/
• 关键词: Armour Coat; Step-Pool Morphology; Steep Slope StreamBed Load; Sediment Mixture; Sediment Discharge; 流砂量分布; 山地河川

The study has been made to understand the sediment transport phenomena in mountain streams where step-pool morphology plays an important role in the sediment transportation. In this project, the relation between step-pool morphology in mountain streams and the mechanics of bed load movement of mixtures is chosen for consideration. The results of this study show(1) The shear stress along the bed with artificial step-pool morphology was investigated experimentally; its value is negative in the region from crest to reattached point and increases linearly downstream.(2) A method to evaluate the critical discharge for the destruction of step-pool morphology.(3) A mathematical model to evaluate the sediment transport phenomena which include sediment desharge, particle size distributions of armour coat as well as of bed load and bed variation is presented.

本研究旨在了解山间溪流中的泥沙输送现象，其中阶梯池形态在泥沙输送中发挥着重要作用。在该项目中，选择考虑山间溪流中的阶梯池形态与混合物的床荷运动力学之间的关系。研究结果表明：(1)对人工阶梯池形态沿床层剪应力进行了实验研究； (2)一种评估阶梯池形态破坏临界流量的方法。(3)评估泥沙输移现象的数学模型，包括：给出了沉积物排放、铠装层的粒度分布以及床负载和床变化。

项目成果

芦田和男: 京都大学防災研究所年報. 29号B-2. 391-403 (1986)

Kazuo Ashida：京都大学防灾研究所年度报告第 29 B-2 号（1986 年）。

Shinji EGASHIRA: "The Role of Step-Pool Bed Form in Sediment Transport" Proc. of the 30th Japanese Conference on Hydraulics. 223-228 (1986)

Shinji EGASHIRA：“阶梯池床形式在沉积物输送中的作用”Proc。

芦田和男: 京都大学防災研究所年報. 29号B-2. 377-390 (1986)

Kazuo Ashida：京都大学防灾研究所年度报告第 29 B-2 号（1986 年）。

S.Egah1ra: Joint Seminar of Japan-P・O・Con Water Resource Probiems. 1-18 (1987)

S.Egah1ra：日本-P·O·Con 水资源问题联合研讨会 1-18 (1987)。

S.Egashira: Joint Seminar of Japan-R.O.C.on Water Resource Problems. 1-18 (1987)

S.Egashira：日本-中华民国水资源问题联合研讨会。