沖淤道 的英文怎麼說

中文拼音 [chōngyūdào]
沖淤道 英文
scour outlet
  • 淤 : Ⅰ動詞1 （淤積） become silted up 2 （血液不流通） （of blood） stagnateⅡ名詞（淤積的泥沙） silt Ⅲ...
  • 道 : Ⅰ名詞（道路） road; way; route; path 2 （水流通過的途徑） channel; course 3 （方向; 方法; 道理） ...
  1. Based on 2m contour of surveyed bathymetry from 1976 to 1999 and mean - high - tidal line distracted from remote sensing images acquired by landsat - 5 tm from 1976 to 2000 respectively, quantitative analysis about alluvion and erosion as well as the relationship between accretion of modern yellow river delta and the water and sediment discharge of yellow river is made, and the results indicate the mean - high - tidal level is more effective than 2m contour of the bathymetry. it is found that the accretion of modem yellow river delta is becoming less and less, what ' s more, erosion is even more than alluvion in some recent years. diaokou promontory has been eroded seriously since yellow river changed its course in1976

    以一般高潮線反映現代黃河三角洲沖淤演變時，從1976年黃河改道清水溝流路入海到2000年，整個黃洞三角洲凈造陸201 . 5km ~ 2 ，淤積有逐漸變慢的趨勢，甚至出現凈蝕退的年份；刁口河嘴大量蝕退，蝕退速率開始快速，后來逐漸變慢；清水溝河嘴大量淤積，淤積速率開始迅速，后來逐漸變慢，甚至出現凈蝕退；清水溝河嘴南側到支脈溝一段岸線與刁口河嘴以西到灣灣溝一段岸線基本穩定。
  2. By using the yearly data of water - sand that is gotten by a couple of adjacent hydrologic station in yellow river lower reaches, this paper makes use of kinds of math methods looking for the nonlinear disturbance among all of the factors, and introduces the thinking of analysis, logic, conclusion, inference, and random to nonlinear hydrologic forecasting. it realizes the valid approximation of the water level process in erodible - bed channel

    本文選擇黃河下游兩對相鄰水文站多年水沙資料，藉助多種數學方法尋找其中的非線性擾動項，將隨機數學中分析、邏輯、歸納、演繹、隨機的思考問題方式引入到非線性水文預報中，實現沖淤河道相應水位過程的有效擬合。
  3. There are a lot of factors that work on the water level of erodible - bed channel together, each of them varies no role, but is correlative. in the adjacent years or the adjacent flood peak of a floodwater, the conditions of the factors that influence water level are always very different. so, there is a nonlinear relation between water level and the factors influencing it

    沖淤河道水位受到很多因素的共同作用，各因素本身的變化沒有規律且互相關聯，相鄰前後年份或同一場洪水的不同洪峰前後，影響水位的水、沙、河道等因素常差別很大，水位與其影響因素之間客觀上是非線性關系。
  4. First, according to measured data and literature, the river channel evolution rule and its reasons in the southern branch of the yangtze river are discussed from the perspectives of historic evolution, recent evolution and the tendency prediction of river channel evolution. besides, the local reservoir has been studied from the changes in thalweg and section as well as the calculation of local erosion and deposit. consequently, the stability and feasibility of reservoir construction in the river section are approved

    首先根據大量實測資料及文獻資料，就歷史變遷、近期演變、河演趨勢預測等方面，初步探討了長江口南支河段河道演變規律及原因，並具體就深泓線的變化、主槽斷面變化、局部沖淤計算等方面對擬建水庫局部區域進行了分析，論證了工程河段建設水庫的穩定性及可行性。
  5. It is mainly by analyzing the features of sediment concentration distribution in vertical in this paper, and then the problems of effect of headwork gates on sediment prevention, relation between distribution of sediment deposition in irrigated areas and its treatment and utilization, estimating the influence of withdrawing water and sediment on channel deposition and erosion in lower yellow river, and treatment and utilization of the sediment entered into canals are discussed

    本文主要從分析計算含沙量沿垂線分佈特點，探討渠首防沙的作用，分析灌區泥沙淤積分佈特性與泥沙處理利用的關系，分析計算引水引沙對黃河下遊河道沖淤影響及入渠泥沙的處理利用等問題。
  6. By the analysis and study, it is showed that : 1 ) the lower weihe river main channel was at a balanceable state between aggradation and degradation and floodplain of the lower weihe river is a tiny aggradation state before the construction of the sanmenxia dam ; 2 ) the severe aggradation of the lower weihe river bed is mainly caused by the increasing riverbed elevation at tongguan after the construction of the sanmenxia dam ; 3 ) the main reason leading to the increasing riverbed elevation at tongguan is the unreasonable operation of the sanmenxia reservoir ; 4 ) the rate of the riverbed aggradation at tongguan reach and the lower weihe river reach are speeded by adverse condition of incoming water and sediment recently

    然後以實測資料為基礎分析研究了三門峽建庫前後潼關高程的變化規律以及渭河下遊河道的沖淤演變規律，分析研究表明：建庫前渭河下游主槽處于動態沖淤平衡狀態，灘地處于微淤狀態；建庫后，渭河下遊河道發生嚴重淤積主要是由於潼關高程的抬升造成的；潼關高程的抬升主要是由於三門峽水庫的不合理運用造成的，近期不利的水沙條件加劇了潼關河床的抬升速度和渭河下游的淤積。
  7. In this part, the first work is pretreatment of a numerical model, including creating calculating grids automatically, improvement of the linear boundary technique and so on. the second work is to estimate the siltation of a basin or channel by liu ' s equation. the third work is to build an edbms ( engineering data base management system ) for the result of mathematical model

    其中主要的工作是：其中主要的工作一是數學模型的前處理，計算網格自動生成，線邊界法的優化；二是應用劉家駒公式在長江口深水航道治理工程地理信息系統的支持下實現港池、航槽開挖的實時回淤估算；三是將計算成果形成gis管理和支持下的工程數據庫系統（ engineeringdatabasemanagementsystem ） ，同時嘗試解決時間序列數據如地形沖淤變化，潮位、流速過程的分析、查詢和顯示問題，並實現實時、互動的動態演示及三維可視化。
  8. Excavating riverbeds in one channel may not only reduce the velocity area in some areas but also increase the velocity in other areas by increasing flow rate in this channel without correspondent changes in riverbeds of rocky rapids. in result, the velocity in waterway may be increased instead of be reduced, the flow condition may also be deteriorated. thus, which branch should be excavated and how to excavate in improving the flow condition of the branch should be further explored

    但在分汊河道內，情況較為復雜，在一汊河道內採取開挖措施后，雖然其過水斷面有所增加，局部流速相應降低，但是由於工程后，汊道的分流比將會相應變化，而石質河床一般無法通過沖淤變化以適應水流條件的改變，因此，航道內工程處的流速可能降低，也可能不降反而有所增加，惡化了航道的水流條件。
  9. The outcomes show that not only the channel near the outlet has been extended, but also the created land area increased to varying degrees during the tests of a regulated discharge regime of the river and ; a regulated discharge regime has significant roles on keeping the balance of erosion and deposition of the estuary

    結果表明：調水調沙期間，河口口門附近不管是河道延伸，還是造陸面積都有不同程度的增加；調水調沙對河口的沖淤平衡有重大的作用。
  10. According to the test results from the yellow river water - sediment regulation, especially the first test, e paper analyzes the results of the scouring or deposition in the lower river and the area of the river - mouth bar, the adjustment of the channel morphology, the effect of channel regulation and the changes of flowing capacity of the lower reaches

    根據這兩次黃河調水調沙試驗成果，特別是首次調水調沙試驗成果，對下遊河道沖淤效果、河口攔門沙區泥沙沖淤量及其分佈、河勢調整、整治工程作用及河道過流能力變化進行了分析。
  11. Based on the analysis of satellite images of various periods, landform data and river channel transverse section evolution in the lower yellow river, the characteristics of the river channel boundary condition changes at different location are clarified as middle flood channel flood transport width and area are evidently decreased especially for the main channel with comparison to 1950s, beach area that is unimpeded before become blocked because of road, irrigation channel constructed on it, and consequently intensify high edge of beach and lowering dyke and river

    在現場查勘的基礎上，通過對丹江口水庫和小浪底水庫攔沙初期下遊河道演變、排洪能力變化特點的對比，分析了黃河下游防洪面臨的新形勢:小浪底水庫攔沙初期，下遊河道發生沖刷，但艾山以下窄河段沖淤變化不大，近年來形成的淤積萎縮的狀況難以很快改觀，游蕩性河段調整劇烈，工程出險機遇增大，河道水位流量關系中水流量以下部分同流量水位明顯降低，中水流量以上部分水位降低幅度可能會明顯偏小，防洪形勢仍不容樂觀。
  12. Response of middle and lower reaches of yangtze river to the initial operation stage of the three gorges project

    三峽水庫蓄水運用初期長江中下遊河道沖淤響應
  13. Monitoring the sink of the estuary by utilizing remote sensing technique can not only directly show the effects of scouring - erosion variation of the channel at estuary section through a regulated discharge regime of the river, but also is the best presentation of the test influence to the estuary in plane

    利用遙感技術對河口尾間進行監測，可直觀反映調水調沙對河口段河道沖淤變化的影響程度，也是調水調沙試驗在河口影響的平面形態的最好展現。
  14. There have been great changes of boundary conditions in the lower yellow river in recent years owing to the influence of water and sediment development and human activities

    小浪底水庫投入運用后，黃河下游在較長時期內受下泄清水影響，河道沖淤演變及排洪能力將會發生較大的變化。
  15. Based on the hydrodynamic theory, the riverbed deformation process of all reservoir area during long duration is investigated by using of computer numerical simulation. in the meantime, based on one dimensional sediment model, the simulation of the longitudinal scouring and sedimentation and lateral deformation in reservoir tidal flat and mainstream are researched. the quasi - two dimensional sediment numerical model forecasting longitudinal scouring and sedimentation and lateral deformation in reservoir and river are established

    應用水動力學理論，以計算機數值模擬為手段，主要考慮長歷時全庫段的河床變形過程，在一維泥沙數學模型基礎上，同時考慮水庫灘槽縱向沖淤和橫向變形的模擬，著重建立可以預測水庫及河道縱向沖淤及橫向變形的準二維泥沙數學模型。
  16. The optimum design mathematical models of both kind channels are developed in accordance with the theory of minimum rate of energy dissipation. the rate of energy dissipation of flow is used as the objective function, and the condition of both non - eroding and non - silting, or the condition of equilibrium of eroding and silting is the constraint

    以水流能耗率作為穩定渠道設計的目標函數，分別以渠道不沖不淤平衡和沖淤平衡作為約束條件，建立起穩定渠道優化設計數學模型，求解渠道底寬、水深、比降的優化值及相應流速。
  17. Substantively, the complexity that water level is influenced by all of the factors and their strong nonlinear random disturbance. for controlling the variance of model error to reduce the errors, we need to separate the market random disturbances from the random error

    實質上沖淤河道水位表現的復雜性是由於其中存在著很強的非線性隨機擾動，因此需要有效分離出顯著性隨機擾動，以抑制模型誤差的方差，達到減小誤差的目的。
  18. By means of prototype observation, analysis and numerical model the author analyzed the canal scour and sediment process, the different scour and sediment affected on the discharge and affected on materials movement in different cross sections of the canal

    本文採用原型觀測、資料分析和數學模型對北引渠道沖淤形態的演變過程，不同沖淤形態對過水能力的影響，斷面形態的穩定性對泥沙輸移的影響進行了研究。
  19. Darby, s. e., and thorne, c. r. numerical simulation of widening and bed deformation of straight sand - bed rivers ii : model evaluation, journal of hydraulic engineeting, vol. 122, no. 4, 1996, p194 202

    王新宏。沖積河道縱向沖淤和橫向變形數值模擬研究及應用。西安理工大學博士論文， 2000年。
  20. Make a comprehensive view of all study results about the flood channel, a model of formation and evolution of the flood channels was proposed. according to this model, not all flood channels formed by ebb channels divided by sand spit develop toward death, some of them may be keeping the current situation or transform to the reserve channel with the change of runoff and sediment concentration from upper reach

    用gis方法計算1861 - 2002年新橋水道區域的沖淤變化，可定量表達漲潮槽在不同時間尺度形成演化規律，結合漲潮槽巖芯沉積物垂向的沉積特性變化，可闡明漲潮槽的形成機理與演化過程，並提出不同種類型漲潮槽的形成演化模式。
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