洪水估算 的英文怎麼說

中文拼音 [hóngshuǐgūsuàn]
洪水估算 英文
flood estimation
  • 洪 : i 形容詞（大） big; vast; grand Ⅱ名詞1. （洪水） flood 2. （姓氏） a surname
  • 水 : 名詞1 （由兩個氫原子和一個氧原子結合而成的液體） water 2 （河流） river 3 （指江、河、湖、海、洋...
  • 估 : 估構詞成分。
  • 算 : Ⅰ動詞1 （計算數目） calculate; reckon; compute; figure 2 （計算進去） include; count 3 （謀劃;計...
  • 洪水 : waterflood; deluge; flood; flowage; torrent; spate; flood water; [義大利] acqua alta洪水泛濫 floo...
  • 估算 : estimate; reckon （up）
  1. It was specially pointed out that, when the tail water is constant maximum tide, the computed flood surface is higher than that of nonsteady current, so there is some safety superelevation. underestimation of the roughness will make downward bias to compute along - river surface and bring hidden trouble for flood control. to improve the section can decrease the water level or offset the water rise for increase of floodplains " roughness, but it need much engineering works

    特別提出，按照恆定流計算出來的設計水位比非恆定水位具有一定的安全儲備；而對于灘地糙率的低估又會造成設計水位的偏低，給防洪工作帶來隱患；如果利用改進斷面形式來降低水位或彌補糙率增加帶來的水位抬高，需要較大的工程量，所以平時應注意灘面的減糙管理工作。
  2. 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。
  3. Gis - based estimation and analysis of the inundation economic losses of honghu flood diversion and detention areas

    的洪湖分蓄洪區東分塊洪水淹沒損失的估算及分析
  4. The research of reservoir design flood is one of basic works in this subject. it is based on the reasons, and the actual conditions of baipenzhu reservoir are combined, the following contents are researched in this paper : 1. according to the actual conditions of baipenzhu reservoir and through the compare of parameters estimation methods, a objective and having fine statistic characteristics p - iii frequency curve distribution parameters estimation method of proximate baipenzhu reservoir is putted

    正是基於這種考慮，本論文結合白盆珠水庫的實際情況，本著理論性與實用性相結合的原則，重點研究以下內容： 1 、根據白盆珠水庫的實際情況，對各種參數估計方法進行比較，提出一種客觀、有良好統計特性、適用於白盆珠水庫的p ?型分佈參數估計方法； 2 、利用實測流量資料推求設計洪水過程； 3 、分析計算可能最大洪水（ pmf ） ； 4 、對兩種方法計算的設計洪水過程進行調洪演算，推求水庫特徵水位。
  5. Insurance company manages insurance wu to want to face various risks, include the catastrophe venture that at present manpower still cannot defy, like typhoon, rainstorm, hail, cold wave, arid, flood, earthquake, mud - rock flow, avalanche, coast, use conflagration of plant plant diseases and insect pests, forest, epidemic disease, etc, the assessment of consequence of the computation of its premium rate, calamity

    保險公司經營保險業務要面對各種各樣的風險，包括目前人力尚無法抗拒的巨災風險，如臺風、暴雨、冰雹、寒潮、乾旱、洪水、地震、泥石流、雪崩、滑坡、動植物病蟲害、森林大火、流行病，等等，其保險費率的計算、災難後果的評估。
  6. The whole system is a computer system for flood disaster mitigation decision and flood risk management which includes basic information management, flood risk calculation caused by dike broken, flood risk map making, flood risk information

    系統是一個包括基礎信息管理、堤防潰決洪水風險計算、堤防潰決洪水風險圖、堤防潰決洪水風險查詢、堤防潰決洪水災害損失評估、區域防洪減災對策等模塊的為防洪減災輔助決策和洪災風險管理服務的計算機系統。
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