洪流速度 的英文怎麼說

中文拼音 [hóngliúsùdù]
洪流速度 英文
flood velocity
  • 洪 : i 形容詞（大） big; vast; grand Ⅱ名詞1. （洪水） flood 2. （姓氏） a surname
  • 流 : Ⅰ動1 （液體移動; 流動） flow 2 （移動不定） drift; move; wander 3 （流傳; 傳播） spread 4 （向壞...
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 洪流 : （巨大的水流） flood current; mighty torrent; powerful current （常用於比喻行進中強大的隊伍或波瀾壯闊、聲勢浩大的革命運動）
  • 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. （快慢的程度） speed; rate; pace; tempo
  1. In this thesis hydraulic experimental studies and theoretical analyses on the vortex - flow drop shaft were conduced and the following results were accomplished : ( 1 ) in the model test some hydraulic characteristics including the shape of air core in the center of the drop shaft, the radial distribution of water flow velocity and the distribution of pressure on the wall of the drop shaft were measured under the condition of high water head above 250m and large discharge above 1400m3 / s. ( 2 ) a kind of computational method for the spiral water flow in the air core region of drop shaft was discussed and applied and the results agree the experimental data well. ( 3 ) the total ratio of energy dissipation in the drop shaft can reach 90 % and the energy dissipation in every region was discussed quantitatively

    本文通過試驗研究與理論分析對旋流式豎井泄洪洞應用於高水頭、大泄流量情況時存在的一些水力學問題進行了研究和探討，取得以下主要成果：一、結合小灣工程導流洞改建，對高水頭（ 252m ） 、大泄流量（ 1400m ~ 3 s ）條件下旋流式豎井中的水流運動特徵進行了比較全面的測量，包括空腔形態、徑向流速分佈及井壁壓強等；二、提出了豎井空腔段螺旋水流水力計算方法，其計算結果與實測值吻合良好；三、利用試驗與計算結果，對旋流式豎井的消能機理進行了探討，對豎井各部分的消能能力有了總體認識；四、對豎井下部消力井的合理井深進行了優化試驗研究，發現消力井合理深度為0 . 9d左右；五、通過試驗研究，歸納出豎井水流總摻氣量估算方法，為導流洞排氣方案的設計提供了參考依據；六、在高水頭、大流量條件下，豎井空腔段下部流速很高，盡管水流螺旋運動引起的離心力可以確保井壁壓強保持正壓，但空化數依然較低，因此豎井的空化空蝕始終是工程界關注的重大問題。
  2. When catchment area, average channel gradient and catchment shape factor of designed culvert or bridge are known, a user can be convenient to get local parameters c, e and b from standard contour charts and easy to calculate flood flow just by a calculator. design period of flood flow is enormously shortened as well as a high precision. estimated flood flow through culvert or small bridge by new calculation model is generally less than by traditional methods, so that much cost is cut down a s reducing the span of culvert or small bridge

    以75000km ~ 2的川中丘陵地區為試點研究區，繪制了該地區新模型的參數等值線圖，率定了不同設計頻率的改正系數，使設計者只需在地形圖上獲取集水面積，河道平均坡降和流域形狀系數，在參數等值線圖上查得橋涵所在地的相應參數，使用計算器即可迅速計算出設計流量，大大縮短了設計周期，且精度較高，設計的洪水流量一般低於傳統方法，從而可減小橋涵跨徑，節省投資。
  3. According to all the sediment peaks of 35 floods observed at each station on the downstream of xiaolangdi, it analyzes the characteristic of delayed sediment peak and establishes a regression equation between sediment peak lag time for each section of xiaolangdi, huayuankou, jiahetan, gaocun, sunkou, aishan and lijin and peak discharge, sediment concentration of the peak, flood propagation velocity and fall velocity of suspended load of the previous station, which can search, make up and extend sediment peak lag time and provide a basis for accurate forecasting on sediment peak travel time of each station on the lower yellow river

    根據小浪底下游各站沙峰均滯後於洪峰的35場洪水，對沙峰滯後於洪峰的特性進行了剖析，建立了小浪底、花園口、夾河灘、高村、孫口、艾山、利津各河段沙峰滯后時間與上站洪峰流量、沙峰含沙量、洪水傳播速度、懸移質泥沙群體沉速之間的回歸方程，可以用來查補延長沙峰滯后時間，為下游各站沙峰傳播時間的準確預報提供依據。
  4. The main work is done with the help of model experiment. in the flood - relief experiment, the flood carrying capacity of spillway tunnel is checked. in the hydraulic experiment of the diversion power conduit system, the followings are studied : the flow condition and fluctuation in the surge chamber, the distribution of flow velocity before the rack in the surge shaft, the amplitude of stage in the quick gate bay etc. the test step, content and results of different proposals are introduced in details

    本項優化試驗研究的目的主要在於，通過泄洪系統整體水力學試驗，校核泄洪洞的泄流能力；通過發電引水系統整體水力學試驗，研究調壓井內水流流態和水位波動情況、調壓井內攔污柵前流速分佈情況；確定快速閘門井內水位波動幅度；試驗確定壓力管道水擊壓力穿井系數以及泄洪洞弧形門處的水壓力。
  5. The velocity of flood propagation was great and flood deformation was slightly when flood peak increase to bank full discharge. as the discharge increased to 2 - 2. 5 times of bank full discharge the velocity reduced to the lowest value and the greatest flood deformation occurred

    當洪峰流量接近平灘流量時洪水傳播速度最快，洪峰變形最小，當洪峰流量約是平灘流量的2 2 . 5倍時，洪水傳播速度最慢，洪水變形最大。
  6. The flood resulting from a dam breaking, and opening by break very spillway, and in order to guarantee safe enlarging the outflow of reservoir, spreads quickly and often causes catastrophes

    大壩潰決造成的洪水、以破壞方式開啟非常溢洪道造成的洪水以及為保證大壩安全加大水庫放流形成的洪水，傳播速度快，破壞性巨大。
  7. 3. a new runoff forecasting model, based on the combination of genetic algorithm and neural network, is proposed, which integrate with the strongpoint of genetic algorithm and neural network. the accuracy and the speed of runoff forecasting are effectively improved that offered a new method for solving runoff forecasting problem

    3 .提出了基於遺傳演算法的神經網路洪水流量的預測模型，該模型綜合遺傳演算法和神經網路的優點，有效地提高了預測精度和速度，為洪水流量預報問題提供了一種新的方法。
  8. In this paper, the total design of decision support system for basin flood control scheduling is systematically described ; the decomposing principle for complicated flood control system is proposed, a models library satisfying the different requirement is established, and the quick creation of scheduling scheme and build of consultation and analysis system is thoroughly studied

    論文系統描述了流域防洪調度決策支持的總體設計思想，提出了復雜防洪系統的分解原理，建立了適應不同要求的模型庫，並就調度方案的快速生成和會商分析平臺構建進行深入研究。
  9. ( 5 ) according to the calculated average section velocity. we can decide the type of the revetment. ( 6 ) when the scour hole depth of the dam head and trail parts is calculated inthe paper. we can validate whether the revetment material is strong enough to resist the degradation of the flood flow

    根據以上計算所得的各斷面平均流速，初步確定需要鋪設的摘要護面類型計算在鋪設護面以後壩首和壩末的沖坑深度，以驗證護面材料是否可以抵抗洪水泄流的沖刷。
  10. ( 2 ) validate whether the crest elevation can meet the require of energy dissipation and erosion prevention during the beginning period of flood discharge. ( 3 ) calculate the altitude of downriver cofferdam, and make it meet the require of energy dissipation and erosion prevention. ( 4 ) calculate some average velocity of flow through some sections, including contracted section in stilling basins behind upriver cofferdam, if the hydraulic jump happen in lower reaches of the river. the program will calculate the average velocity of flow of contracted section and the length of the apron

    主要設計內容包括：計算上游圍堰后消力池的尺寸；驗證泄洪初期壩面高程是否能夠滿足消能防沖需要；計算下游圍堰堰頂高程，使其滿足泄洪期圍堰和壩體過流的消能防沖和工程進度的需要；計算部分斷面平均流速，包括：上游圍堰后消力池中收縮斷面的斷面平均流速；壩首和壩末的斷面平均流速；當下遊河道發生水躍時，計算下遊河道的收縮斷面平均流速及需要鋪設護坦的長度。
  11. The coarser sedimentary layers reflect the period of warm and wet climate, during which the natural runoff of weihe river violently rose, the speed of flow increased and the flood easily occurred ; on the contrary, the finer sedimentary layers reflect the period of cool and dry climate, during which the natural runoff of weihe river fell and the speed of flow slowed

    在氣候相對溫濕、降水量較大的時期，渭河水動力條件增強，流量增大，流速加快，出現粒度明顯變粗的沉積夾層，此時也是洪水多發時期；而在氣候相對涼干、降水量較少的時期，渭河水動力條件減弱，流量減少，流速變慢，因此出現粒度明顯變細的沉積夾層。
  12. In the final stage of the liangzhu culture, warm - humid climate, heavy precipitation and rising temperature led to sea - level rising, rivers running impeded, water areas large, in addition that the sites in the last stage of the liangzhu culture were mostly located in low - lying areas, which had liangzhu ancients suffered a unparalleledbig flood disaster resulting in the cultural decline

    良渚文化末期，氣候暖濕，溫度增加，導致海平面上升，入海河流宣洩不暢，水域面積擴大，加之良渚文化晚期遺址多分佈在地勢低洼地區，因此良渚先民遭受了一場大洪水災難，遂使良渚文化迅速衰落。
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