本文關(guān)鍵詞：支流河口水沙運(yùn)動(dòng)的二維數(shù)學(xué)模型研究——以長(zhǎng)江上游的嘉陵江河口為例，由筆耕文化傳播整理發(fā)布。

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水利水電工程

地球物理學(xué)

公路與水路運(yùn)輸

water and sediment movement

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    Study on 2 D mathematical model of water and sediment movement at the branch river estuary

    支流河口水沙運(yùn)動(dòng)的二維數(shù)學(xué)模型研究——以長(zhǎng)江上游的嘉陵江河口為例

短句來(lái)源

    The calculating results using the testing information from undistorted model of Hong Sing section and using prototype observation information indicate that the stream wise water table, sectional velocity distribution and channel sedimentation from the model coincide well with prototype size of that. Those will provide basic theory for study regulation of water and sediment movement.

    重慶河段正態(tài)模型試驗(yàn)資料和原型觀測(cè)資料計(jì)算結(jié)果表明，模型計(jì)算的沿程水位、斷面流速分布和河床沖淤變化與原型資料符合較好。 為今后研究河流水沙運(yùn)動(dòng)規(guī)律提供了理論依據(jù)。

短句來(lái)源

    (3) Erosion mechanism in the concave bank was studied according to the water and sediment movement and the distribution of the shearing stress in the curve reach, and the stable cross-section equation was derived for the cohesive concave bank.

    (3) 通過(guò)分析彎道水沙運(yùn)動(dòng)和剪切力分布的特點(diǎn)，探討了彎曲河道的淘刷機(jī)理，導(dǎo)出了粘性岸灘的穩(wěn)定斷面方程。

短句來(lái)源

    Then, the calculation was carried out on the 2 D model of water and sediment movement and stream bed erosion before and after the channel improvement when TGP is put into operation and the water storage level at Tunaozi reach is 135 meters or 156 meters.

    在此基礎(chǔ)上，進(jìn)行了三峽建庫(kù)后，土腦子河段135m蓄水期及156m蓄水期整治前后的二維水沙運(yùn)動(dòng)及河床沖淤計(jì)算。

短句來(lái)源

    Study on 2 D mathematical model of water and sediment movement at the branch river estuary

    支流河口水沙運(yùn)動(dòng)的二維數(shù)學(xué)模型研究——以長(zhǎng)江上游的嘉陵江河口為例

短句來(lái)源

    The calculating results using the testing information from undistorted model of Hong Sing section and using prototype observation information indicate that the stream wise water table, sectional velocity distribution and channel sedimentation from the model coincide well with prototype size of that. Those will provide basic theory for study regulation of water and sediment movement.

    重慶河段正態(tài)模型試驗(yàn)資料和原型觀測(cè)資料計(jì)算結(jié)果表明，模型計(jì)算的沿程水位、斷面流速分布和河床沖淤變化與原型資料符合較好。 為今后研究河流水沙運(yùn)動(dòng)規(guī)律提供了理論依據(jù)。

短句來(lái)源

    (3) Erosion mechanism in the concave bank was studied according to the water and sediment movement and the distribution of the shearing stress in the curve reach, and the stable cross-section equation was derived for the cohesive concave bank.

    (3) 通過(guò)分析彎道水沙運(yùn)動(dòng)和剪切力分布的特點(diǎn)，探討了彎曲河道的淘刷機(jī)理，導(dǎo)出了粘性岸灘的穩(wěn)定斷面方程。

短句來(lái)源

    Then, the calculation was carried out on the 2 D model of water and sediment movement and stream bed erosion before and after the channel improvement when TGP is put into operation and the water storage level at Tunaozi reach is 135 meters or 156 meters.

    在此基礎(chǔ)上，進(jìn)行了三峽建庫(kù)后，土腦子河段135m蓄水期及156m蓄水期整治前后的二維水沙運(yùn)動(dòng)及河床沖淤計(jì)算。

短句來(lái)源

    ENVIRONMENTAL EVOLUTION AND THE REGULARITIES OF WATER AND SEDIMENT MOVEMENT IN THE YELLOW RIVER BASIN

    黃河流域環(huán)境演變與水沙運(yùn)行規(guī)律

短句來(lái)源

    2-D Mathematic Model of the Yellow River Estuarine Tidal Wave and Sediment and Its Application(Ⅱ) ——Water and Sediment Movement Process Simulation

    黃河河口二維泥沙有限元數(shù)學(xué)模型及應(yīng)用(Ⅱ)——潮流和泥沙輸運(yùn)沉積過(guò)程模擬分析

短句來(lái)源

    A split vertical 2-D water and sediment mathematical model and 1-D density current mathematical model were set up to get the primary knowledge about water and sediment movement.

    本文分別建立壩區(qū)立面二維水沙數(shù)學(xué)模型和一維異重流模型,對(duì)壩區(qū)水沙運(yùn)行情況進(jìn)行模擬研究,得出壩區(qū)水沙運(yùn)動(dòng)的初步認(rèn)識(shí)。

短句來(lái)源

    Due to an urgent need for taming the Yellow River, it is of important practical and theoretical significances to study systematically the environmental evolution and the regularities of water and sediment movement in the Yellow River basin.

    由于黃河治理任務(wù)的緊迫性,系統(tǒng)地研究黃河流域環(huán)境演變與水沙運(yùn)行規(guī)律,有著重大的實(shí)踐意義和學(xué)術(shù)意義。

短句來(lái)源

    A mixed method was employed to solve the numerical equations of water and sediment movement, and finally , a special flood process in the Lower Yellow River was calculated with the model to verify the applicability for the high sediment laden flow river.

    通過(guò)工程實(shí)例的計(jì)算驗(yàn)證，證實(shí)了模型所采用的基本方法是合理的，模型有較強(qiáng)的河床邊界適應(yīng)能力，，可用以解決有關(guān)多沙河流河床演變預(yù)測(cè)及渾水洪水預(yù)報(bào)的有關(guān)問(wèn)題。

短句來(lái)源

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  water and sediment movement

Water and sediment movement around a coastal headland: Portland Bill, southern UK

This required file contains parameters governing water and sediment movement in the main channel of the subbasin.

This paper is based on the characteristics of water and sediment movement in the Chang Jiang Estuary, the evolution characteristics at .modern time are as follows:(1) The island and sandbank made waterway dividing into branches regulary.(2) The south side erosion and the north side deposition result in the islands and sandbanks moving northward.(3) Shifting of the thalweg of ebbflow, the South and North waterways to be thriving and degenerating alternatively. In order to make the South and Norrh waterways...

This paper is based on the characteristics of water and sediment movement in the Chang Jiang Estuary, the evolution characteristics at .modern time are as follows:(1) The island and sandbank made waterway dividing into branches regulary.(2) The south side erosion and the north side deposition result in the islands and sandbanks moving northward.(3) Shifting of the thalweg of ebbflow, the South and North waterways to be thriving and degenerating alternatively. In order to make the South and Norrh waterways of the South Branch to be stable, the following three measures are required. (1) To stabilize the dividing point and prevent its furher retreat by strong engineering structures.(2) To control the water and sediment distribution and make them basically to be balanced in the South and North water ways, and prevent the shifting of the thalweg.(3) To stabilize the Biandan sandbank and prevent violent change of shoals and channels causing large amount of sediment to move downstream.

本文從長(zhǎng)江河口水流和泥沙運(yùn)動(dòng)的特性,論述長(zhǎng)江口河床演變的特征有三:(1)沙島淺灘使水道有規(guī)律地分汊。(2)南沖北淤沙島北移。(3)落潮主泓擺動(dòng),南北港交替興衰。根據(jù)這些特征對(duì)南支南北港的治理認(rèn)為必要條件有三:(1)南北港分水分沙要基本平衡,防止落潮主泓的偏移。(2)固定分汊口不使繼續(xù)后退。(3)穩(wěn)住扁擔(dān)沙,防止灘槽的劇烈變動(dòng)和大量泥沙下移。

Due to an urgent need for taming the Yellow River, it is of important practical and theoretical significances to study systematically the environmental evolution and the regularities of water and sediment movement in the Yellow River basin. An outline is given in this paper concerning the important significance of this study, the content and principal objectives of the research project, the progresses made so far and the working arrangement for the near future. In the recent two year studies of this project,...

Due to an urgent need for taming the Yellow River, it is of important practical and theoretical significances to study systematically the environmental evolution and the regularities of water and sediment movement in the Yellow River basin. An outline is given in this paper concerning the important significance of this study, the content and principal objectives of the research project, the progresses made so far and the working arrangement for the near future. In the recent two year studies of this project, a series of background values have been obtained which can be used as a basis for revealing the environmental evolution, and the understanding has been deepened concerning the regularities of water and sediment movement. All these have accumulated valuable and reliable scientific data for comprehensive analises and all-aspect studies in the coming two years.

由于黃河治理任務(wù)的緊迫性,系統(tǒng)地研究黃河流域環(huán)境演變與水沙運(yùn)行規(guī)律,有著重大的實(shí)踐意義和學(xué)術(shù)意義。本文就該項(xiàng)目研究的重要意義、項(xiàng)目?jī)?nèi)容與主攻目標(biāo)、研究進(jìn)展和下一步工作打算作了簡(jiǎn)要的闡述。近二年來(lái)本項(xiàng)研究取得了一系列環(huán)境變化背景值,深化了水沙運(yùn)行規(guī)律的認(rèn)識(shí),為今后二年的綜合分析和全面總結(jié),積累了可靠的科學(xué)數(shù)據(jù)。

Sanmenxia water control project is the first multi purpose project built on the trunk of the Yellow River.The constructiou of Sanmenxia project has caused great changes in scouring and silting in the middle and lower course of the Yellow River. Through the practice of Sanmenxia project, valuable experiences have been accumulated concerning the understanding and harnessing of the Yellow River and the construction and management of...

Sanmenxia water control project is the first multi purpose project built on the trunk of the Yellow River.The constructiou of Sanmenxia project has caused great changes in scouring and silting in the middle and lower course of the Yellow River. Through the practice of Sanmenxia project, valuable experiences have been accumulated concerning the understanding and harnessing of the Yellow River and the construction and management of projects on a muddy river. By use of the collected data and research results, and the method of system analysis, the main laws of scouring and silting caused by the reservoir are developed in this paper, which conform to the law and characteristics of water and sediment movement in muddy river.

為了分析多沙河流上水利工程對(duì)水沙運(yùn)動(dòng)規(guī)律的影響，根據(jù)三門(mén)峽工程的運(yùn)用實(shí)踐、實(shí)際資料以及以往的研究成果，應(yīng)用系統(tǒng)工程方法分析了三門(mén)峽水庫(kù)對(duì)黃河沖淤的主要原因．結(jié)果表明，水利工程對(duì)多沙河流水沙運(yùn)動(dòng)特性的影響具有一定的規(guī)律

  本文關(guān)鍵詞：支流河口水沙運(yùn)動(dòng)的二維數(shù)學(xué)模型研究——以長(zhǎng)江上游的嘉陵江河口為例，由筆耕文化傳播整理發(fā)布。