flood frequency 中文意思是什麼

flood frequency 解釋
洪水瀕率
  • flood : n 1 洪水，水災。2 溢流，漲水，潮水最高點，泛濫，洶涌。3 〈詩〉河，湖，海。4 充溢，豐富；大量，一...
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  1. To avoid the retardation of flood water, improve the discharging conditions and reduce flooding frequency and flowage damage on flood retarding basins, huai river commission made a decision to adjust and regulate the middle courses of huai river. the authorial thesis is based on the main part of huai river flood - protection planning, i. e., the flood - protection planning of huai rivers middle courses. author of thesis participated in the drawing up and the administrating of the plan

    為了擺脫中、小洪水行洪不暢，減少行、蓄洪區在中、小洪水條件下的行洪機遇，淮河水利委員會在淮河流域總體防洪規劃中，決定重點解決淮干中遊河道防洪問題，論文作者親自參與制定了淮河中、上遊河道防洪規劃制定工作，並組織、領導規劃中各項骨幹工程的施工建設，前後數年之久。
  2. Abstract : this paper analyzes causal factors of flood in the middle reaches of changjiang river. due to neglection of environmental management, soil erosion in the upper and middle reaches of the changjiag river, lake sedimentation, large - scale reclamation of marshes, the flood regulation capacity of the lake was descended, and flood stage was risen and prolonged. consequently more and more river levees and lake dikes were reinforced almost every year to prevent the disasters, which made flood level go up and flood period last for more days. the frequency of flood and waterlogging disasters rose and their damage was enlarged. several proposals for flood prevention including agricultural modernization are put forward

    文摘: 1998年長江大洪水后開始實施的「平垸行洪，退田還湖」的土地利用調整方案，從長遠來說應尋求農業安全且收入逐漸提高條件下的土地利用，長江中游地區應積極推進農業現代化，提高農業勞動生產率，轉移，減少分蓄洪區的人口，移民建鎮，對區內的土地要促進其規模經營，由優秀的有文化的農民經營，平時只有少量的直接從事農業生產的經營管理人員，農忙時則大量地使用季節性合同工或實現機械化，大洪水時退田還湖，減輕長江幹流大洪水的壓力，減少分洪與特大洪災時的損失，這樣還可促進避洪、冬季農業等的發展，也有利於長江中上游地區陡坡耕地的退耕還林，還可在糧食充足時進行休耕，在旱災、糧食緊張時擴大糧食生產?
  3. There are low frequency vortex moves northward at low - latitude and southward at mid - latitude ; there are low frequency vortex moves northward at low - latitude and southwestward at mid - latitude in flood years, it ' s easily to bring on convergence or divergence in large - scale and heave rainfall

    （ 3 ）澇年低頻olr在經向上同時存在由低緯度向北和由中高緯向南的傳播，二者交匯在20 30 n之間。旱年則沒有顯著的匯合區。
  4. Video frequency monitoring system for flood control in nierji water complex

    尼爾基水利樞紐防汛視頻監控系統
  5. The whole thesis consists of three parts. firstly, we establish the meteorological disaster database of jilin province and deduce the statistic frequency of the main meteorological disaster on the base of choosed meteorological disaster index. the spatial distribution law and time variation of drought, flood and low temperature cold damage are concluded with the gis technology

    全文主要由三部分組成：首先，在選擇氣象災害指標的基礎上，建立了吉林省氣象災害數據庫，統計主要農業氣象災害的發生頻率，然後利用gis技術得到吉林省旱澇、低溫冷害的空間分佈規律和時間變化。
  6. The acs algorithm inspired by the ants foraging principle is used to solve the problem of the homogenous frequency enlargement of design flood in this paper, the sketch of ants foraging about design flood computation is constructed and retailed process is provided

    摘要採用蟻群acs改進優化演算法求解了典型洪水同頻率放大問題，構造了用於設計洪水過程求解的螞蟻覓食概化結構圖，並給出了具體求解思路和流程。
  7. And the 30 - 60 day low - frequency character is more distinct in flood years than in drought years ; ( 2 ) the relationship of low - frequency olr and zonal wind is greatly different in drought years and flood years

    重點研究的旱、澇各4個年份的分析結果表明，澇年olr場的30 60天振蕩比旱年更為顯著。
  8. Lastly, the scaling hypotheses is applied to the relationship of flood volume and duration in this paper. the flood intensity - duration - frequency form is proved based on the temporal scaling property of flood

    最後，本文將標度不變性引入洪水洪量? ?歷時關系中，對大流域年最大洪量隨歷時變化的標度性質行了嘗試性的研究。
  9. Abstract : in this paper, the major problems in water resources, flood and drought, and water environment in china are analysed, and new subjects of study on hydrology are pointed out, including the uncertainty of hydrological phenomena, the effect of human activities on hydrology, the calculation of water level frequency, the optimum effcet of water resource development and utilization, the analysis of water supply and demand, the mechanism of water - saving agricultural irrigation, flood and drought prevention, etc

    文摘:從水資源開發利用與保護、水旱災害防治等方面論述中國當前存在的主要水問題：水危機和水浪費同時存在、水污染日趨嚴重、防洪減災任重道遠、生態環境破壞嚴重、全球氣候變暖產生不利影響；進而論述水文學研究面臨的新課題：水文現象的不確定性、人類活動對水文的影響、水位頻率計算、水資源開發利用的最佳效應、水資源供需分析、農業節水灌溉機理及水旱災害的防治，並指出必須加強對這些新課題的研究
  10. Sparedescription : in this paper, the major problems in water resources, flood and drought, and water environment in china are analysed, and new subjects of study on hydrology are pointed out, including the uncertainty of hydrological phenomena, the effect of human activities on hydrology, the calculation of water level frequency, the optimum effcet of water resource development and utilization, the analysis of water supply and demand, the mechanism of water - saving agricultural irrigation, flood and drought prevention, etc

    描述:從水資源開發利用與保護、水旱災害防治等方面論述中國當前存在的主要水問題：水危機和水浪費同時存在、水污染日趨嚴重、防洪減災任重道遠、生態環境破壞嚴重、全球氣候變暖產生不利影響；進而論述水文學研究面臨的新課題：水文現象的不確定性、人類活動對水文的影響、水位頻率計算、水資源開發利用的最佳效應、水資源供需分析、農業節水灌溉機理及水旱災害的防治，並指出必須加強對這些新課題的研究
  11. Based on the theoretic method, minjiang plain is divided into regions by flood risk using the method of hazard frequency analysis is developed

    在理論分析的基礎上，結合岷江成都平原洪水風險分析的具體研究項目，運用水災頻率分析方法進行了洪水風險區劃的研究。
  12. By use of many years ' hydrologic data, the max, water quantity dated from every day may be counted in every year ' s flood season, and the designed water quantity corresponds to the definite frequency

    滑動汛期水位在多年資料基礎上，通過統計汛期中每日為起點的最大來水量，求出固定頻率的設計來水量，選擇合適的典型洪水過程線進行調洪計算后得到每天的汛限水位。
  13. In the first part, we compute the site design flood of given design frequency ( 0. 01 %. 0. 1 %. 0. 2 % and 1 % ) using the design flood hydrograph. then we get the design reservoir inflow flood of the same design frequency by the resultant discharge method. according to the computing value we compare the site design flood and design reservoir inflow flood of different time interval

    本論文以廣西紅水河龍灘水電站為例，在第一篇中採用洪水過程線法計算了給定設計頻率為0 . 01 、 0 . 1 、 0 . 2和1的壩址設計洪水，並利用合成流量法計算了相應設計頻率的入庫設計洪水。
  14. Every parameter used in the design flood calculation can be adjusted according to the practical requirement. the software can calculate many sets of frequency design flood in the same time

    設計洪水計算的各參數均可按照實際需要調整，可同時計算多組頻率的設計洪水，極大地擴展了軟體的適用性。
  15. By choosing flood control system of downstream basin of the yellow river as the background, six relatively independent subsystem is established, which includes basic information management, real - time flood forecast, multi - reservoir flood control scheduling, consultation and analysis, scheduling scheme management, frequency analysis, and assist with friendly man - machine conversation to constitutes the yellow river downstream flood control scheduling decision support system, which can satisfy the practicability requirements of decision - making

    論文以黃河下游防洪系統為背景，建立包括基本信息管理、短期洪水預報、水庫（群）防洪調度、會商與靈敏度分析、方案管理、水雨情頻率分析等6個相對獨立的子系統，並輔以友好的人機交互界面集成為黃河下游防洪調度決策支持系統，滿足了群決策會商的實用性要求。
  16. 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。
  17. Flood in china has several characteristics as follows : the distributing area is far and wide, the frequency is high, the relationship between " flood " and " waterlog " is severe, the duration time of high water level in the river is enlarged and the losses is huge

    我國的洪水災害具有分佈范圍廣、發生頻繁、防洪和排澇矛盾突出、河道高水位行洪歷時長、水災損失大、受洪水威脅人口多等特點。
  18. ( 3 ) the collective model ( hgcm ) based on the individual forecast model of the high frequency and the low frequency application to the flood forecast

    （ 3 ）小波分解高頻項和低頻項獨立預報模型（ hgcm模型）應用於洪水預報。
  19. Though the flood control engineering system improved the flood control standard and reduce the frequency of flood inundation and enlarger the protected area, but at the same time, the risk of dike broken and dam failed were added. moreover, people found that human living environment become worsen increasingly and the river ecosystem was destroyed

    然而，在與洪水斗爭的過程中，人們發現雖然通過大規模的水利工程建設，提高了江河的防洪標準，減少了洪水泛濫的幾率，擴大了防洪保護的范圍，但同時也增加堤防、大壩潰決等的風險，而且人類發現生存環境日益惡化，河流生態系統被破壞等諸多問題。
  20. The frequency of the flood and drought has distinct interannual change, floods emergence more and more from 1980, especially in north, there are more and more droughts in north region and no flood from 1980. in autumn, there are least precipitation in south - west region and most precipitation in south - east region, the precipitation difference between them is exceeding 95 % significance level, the difference between them is most prominent in september

    浙江秋季西南區降水最少，東南區最多，它們的差異已經超過0 . 05信度值，其中9月份降水的差別最明顯。另外，秋季3個區的平均降水量從9月到11月均表現為逐月減少的特徵。秋季旱澇頻率有明顯的年代際變化，秋季浙北區和東南區旱澇頻率都有減少的趨勢，而秋季西南區進入90年代后，乾旱的頻率明顯增加。
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