DESIGN PRINCIPLES OF NATURE-ORIENTED RIVER IMPROVEMENT BASED ON FLUVIAL HYDRAULICS
基于河流水力学的自然型河流整治设计原则
基本信息
- 批准号:04555126
- 负责人:
- 金额:$ 14.27万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Developmental Scientific Research (B)
- 财政年份:1992
- 资助国家:日本
- 起止时间:1992 至 1994
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This research project has been executed to make clear the design principle of nature oriented improvement works from the view point of the advanced fluvial hydraulics. At first, we discussed the concept of nature concerning to rivers and the fundamental functions of the nature-oriented improvement works based on the field reconnaissance. Then, the key factors for designing the nature-oriented improvement works have been studied by the field investigation, hydraulic experiments and theoretical approaches.The formation of longitudinal bed profiles of alluvial rivers were clarified on the type of river composed of a gravel-bed reach with steep slope and sand-bed reach with mild slpoe. The effect of vegetation on the riverbank formation are also examined by a large-scale experimental flume.On the mechanism of bed-step formation in mountainous streams, the following results have been deduced. The step-pools are generated due to the interaction of antidunes and diagonal cross waves in supercritical flows. When wave lengths of antidunes and water surface waves coincide each other, the antidunes turns out to be diagonal one and then the surface waves begin to be amplified.In order to establish guide lines for designing the bank slope of nature-oriented revetments, the velocity and boundary shear stress distributions in trapezoidal channels with various slopes of side bank were derived by an analytical method. The calculated results were in good agreement with the experimental ones.The multiple step types of revetment were discussed based on physical model tests to clarify the stability of ripraps. The formation process of local flow and scour at flow convergent parts along revetments are discussed from the results of experiments. On the design of riverbed protection works, a series of experimental studies was carried out using several types of protection works. Some methods using riprap works to reduce scour depth were proposed.
本研究项目的实施是为了从先进河流水力学的角度明确面向自然的改善工程的设计原则。首先,在实地勘察的基础上,探讨了河流的自然概念以及面向自然的整治工程的基本功能。然后,通过现场调查、水力试验和理论方法,研究了面向自然的改善工程设计的关键因素。明确了陡坡砾石河段和缓坡砂河段河流类型的冲积河纵向河床剖面的形成。并通过大型实验水槽研究了植被对河岸形成的影响。关于山地溪流河床台阶的形成机制,得出了以下结果。阶梯池是由于超临界流中反沙丘和对角交叉波的相互作用而产生的。当背丘和水面波的波长一致时,背丘变为对角波,面波开始放大。为了建立面向自然的护岸岸坡设计准则,采用解析方法推导了不同边岸坡度的梯形河道中的速度和边界剪应力分布。计算结果与试验结果吻合较好。基于物理模型试验对护岸的多台阶类型进行了讨论,以明确抛石体的稳定性。从实验结果出发,讨论了护岸汇流处局部水流和冲刷的形成过程。在河床防护工程设计方面,针对多种类型的防护工程进行了一系列的试验研究。提出了一些利用抛石工程减少冲刷深度的方法。
项目成果
期刊论文数量(31)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
長谷川和義: "張り芝水路における浮遊砂濃度分布と側岸堆積" 水工学論文集. 39. 727-732 (1995)
长谷川一义:“哈里芝水道悬浮泥沙浓度分布和边岸沉积”《水利工程学报》39. 727-732 (1995)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
C.Ishii: "An Experimental Study on Effects of Revetment Slope on Local Flow and Scour at a Flow Convertment Part in River Channels" Annu.Jour.of Hydrau.Eng.Vol.39. 741-746 (1995)
C.Ishii:“护岸坡度对河道流量转换部分局部流量和冲刷影响的实验研究”Annu.Jour.of Hydrau.Eng.Vol.39。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
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藤田裕一郎: "多自然型護岸周辺の流れ特性に関する実験" 水工学論文集. 39. 557-564 (1995)
Yuichiro Fujita:“天然海堤周围流动特性的实验”水利工程学报 39. 557-564 (1995)。
- DOI:
- 发表时间:
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- 影响因子:0
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亀田 裕二,長谷川 和義,渡邊 康玄,金高 州吾: "広い粒度分布を持つ河岸に対する斜面効果を考慮した浸食砂量式の研究" 水工学論文集. 37. 637-642 (1993)
Yuji Kameda、Kazuyoshi Hasekawa、Yasugen Watanabe、Shugo Kanataka:“考虑宽粒度分布河岸坡度效应的侵蚀沙量公式研究”水利工程学报 37. 637-642 (1993)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
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佐々木 克也,山本 晃一,藤田 光一: "低水路川幅の変化" 土木学会第47回年次学術講演会講演概要集. II. 98-99 (1992)
Katsuya Sasaki、Koichi Yamamoto、Koichi Fujita:“低河道河流宽度的变化”日本土木工程师学会第 47 届学术年会摘要 II(1992 年)。
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MURAMOTO Yoshio其他文献
MURAMOTO Yoshio的其他文献
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{{ truncateString('MURAMOTO Yoshio', 18)}}的其他基金
The study on control of sand bars and bank erosion in meandering rivers
曲流河道沙坝及河岸侵蚀治理研究
- 批准号:
07455196 - 财政年份:1995
- 资助金额:
$ 14.27万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Hydraulic Design of Underground Flood way in a Metropolitan Area
某都市圈地下泄洪道水力设计
- 批准号:
07558172 - 财政年份:1995
- 资助金额:
$ 14.27万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Debris Flows, Floods and Beach Erosion and Their Mitigation
泥石流、洪水和海滩侵蚀及其缓解措施
- 批准号:
05044094 - 财政年份:1993
- 资助金额:
$ 14.27万 - 项目类别:
Grant-in-Aid for international Scientific Research
開水路粗度急変部における流れの遷移と流砂機構に関する研究
明渠粗糙度变化过程中水流转变及输沙机制研究
- 批准号:
02650359 - 财政年份:1990
- 资助金额:
$ 14.27万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
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