channel bed 中文意思是什麼

channel bed 解釋
河床
  • channel : n 1 水路，水道，渠，溝；海峽；河床，河底。2 （柱等的）槽，凹縫；【機械工程】槽鐵，凹形鐵。3 〈比...
  • bed : n 1 床，床鋪；床位，鋪；（動物的）窩；〈比喻〉安樂窩，墳墓；床墊；睡眠；就宿。2 婚姻，夫婦關系。3...
  1. 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。
  2. 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。
  3. At first, this paper analyzes the factors of water - sand influencing water level of yellow river and the feasibility just using the factors of water - sand to study water level, and collects the corresponding data ; secondly, because there are strong nonlinear relation in the corresponding data, by meticulous theory analysis, this paper integrates basic nonlinear analysis method, theory of random analysis, method of least squares and so on. it puts forward a method which can get the high accuracy simulation of the data, perfects the multi - factor analysis of variable ( over three factors ) of the statistic ; thirdly, it applies the method to the approximation of corresponding water level process which belong to the capacity of sand of middle - high and middle - low, and get the high - accuracy simulation about the typical nonlinear relation ; at last, this paper definitudes the main influence mode that the capacity of sand. it mainly unite with other factors to work on the water level in the yellow river lower reaches ; mor eover, this paper analyzes the difficult point and the direction of improvement to realize the accuracy forecasting of the flood level of erodible - bed channel

    首先，系統分析了影響黃河水位的水沙因素，及僅用水沙因素有效研究水位的可行性，並按變量對應思想採集它們的相應數據；其次，由於相應水位過程數據中含極強的非線性關系，本論文經細致的理論分析，將基本的非線性分析方法、統計建模方法、隨機分析理論、最小均方誤差原則等等數學理論及方法有機揉合，提出了能有效實現這類數據高精度擬合的分層篩選法，並改進了統計學中多因子（三個以上）方差分析法；再次，將這一方法用於黃河中高及中低含沙類洪水相應水位過程的擬合，實現了這一典型非線性關系的高精度擬合，各年汛期上下游相應洪水位過程的擬合誤差都較小；最後，明確黃河下游含沙量對水位的主要影響方式，即含沙量主要是與其它因素聯合對水位作用；另外分析了要實現變動河床洪水位過程準確預報的困難所在及改進方向。
  4. According to sedimentary characteristics of the carboniferous taiyuan formation in feicheng coal field, including lithology, size distribution, sedimenta ry structure, geochemistry and paleontology etc., the carboniferous paleoenvironme nt of this area is divided into carbonate open platform and tidal flat environme nt. it is recognized that the taiyuan formation is formed in the epicontinental c oast which is dominated by the tidal. the peat flat is the important paleoenviron ment for coal accumulation. the tidal channel destroys the coal bed. the pulsative vibration of the crust is the major factor which controls the evolution of the sedimentary environment and the coal accumulation

    根據肥城煤田石炭系太原組的巖性、粒度分佈、沉積構造、地球化學及古生物等沉積特徵，將該區晚石炭世古地理劃分為碳酸鹽開闊臺地和潮坪環境，認為太原組形成於潮汐作用為主的陸表海海岸，泥炭坪是成煤的重要古地理環境，潮渠對煤層有一定的破壞作用，地殼的脈動性振蕩作用是控制沉積環境演化和聚煤作用的主要因素。
  5. Abstract : according to sedimentary characteristics of the carboniferous taiyuan formation in feicheng coal field, including lithology, size distribution, sedimenta ry structure, geochemistry and paleontology etc., the carboniferous paleoenvironme nt of this area is divided into carbonate open platform and tidal flat environme nt. it is recognized that the taiyuan formation is formed in the epicontinental c oast which is dominated by the tidal. the peat flat is the important paleoenviron ment for coal accumulation. the tidal channel destroys the coal bed. the pulsative vibration of the crust is the major factor which controls the evolution of the sedimentary environment and the coal accumulation

    文摘:根據肥城煤田石炭系太原組的巖性、粒度分佈、沉積構造、地球化學及古生物等沉積特徵，將該區晚石炭世古地理劃分為碳酸鹽開闊臺地和潮坪環境，認為太原組形成於潮汐作用為主的陸表海海岸，泥炭坪是成煤的重要古地理環境，潮渠對煤層有一定的破壞作用，地殼的脈動性振蕩作用是控制沉積環境演化和聚煤作用的主要因素。
  6. Efficient and economical artificial recharge projects can often result from utilizing the bed of the main stream channel.

    有效而且經濟的人工補給措施一般可以利用主河道的河床。
  7. Analysis on river bed evolution of dam area from the main river closure to open diversion channel closure of tgp

    三峽工程大江及明渠截流期間壩區河演分析
  8. Then river width increased and the intensity of deep point lowing and bed material coarsening decreased and water level lowed continuously. so the bed form changed toward to u type. the bed regulation is realized through sediment silting in different parts in cross section during silting period and the deformation of bed form changed from broad u type channel to narrow and deep v type channel

    研究表明，河道在持續沖刷前期深泓點及水位下降與河床粗化同步發展，河床向v型發展；沖刷後期深泓點下降、河床粗化減弱，河道展寬增大，水位繼續下降，河床向u型發展；在以淤積為主時期的調整，是通過斷面不同部位的淤積來實現的，但都是由u型較大河槽向v型窄深小槽發展。
  9. This paper introduces the basic structure, system composition, applicable condition, main parameters and construction procedure of the first walking underwater bed leveling machine in china, and describes the construction quality and efficiency of bed leveling in yangtze estuary deepwater channel regulation project

    摘要簡要介紹我國第一臺步履式水下基床整平機的基本結構、系統組成、適用條件、主要技術參數和施工工藝，並對其在長江口深水航道治理過程中進行基床整平的實際施工質量和工效作了說明。
  10. 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。
  11. In the bed there is stirrer. it avoid agglomeration of damp material and forming channel flow during drying

    床內設置攪拌，避免了潮濕物料的團聚及乾燥過程中形成溝流。
  12. The characteristic of bed regulating is that the width and area of main channel and medium flowing channel increased greatly during the sustained silting period and decreased during scouring period

    河道調整特點為持續沖刷時期主槽、中水河槽的河寬、面積都明顯增大，持續淤積時期則減小。
  13. Bed - load channel fill

    底荷河道沉積
  14. Since boundary of the lower yellow river bed varies with the flow conditions, main channel of the stream continually shrank and flood control becomes rather difficult

    隨著黃河下游水沙條件的不斷變化，河道的邊界條件也隨之發生變化，主槽嚴重萎縮，泄洪能力日臻下降，防洪問題日益突出。
  15. Based on the riverbed evolution analyses of the downstream reach of oujiang estuary and physical model test of eight types of regulation projects, an estimation method for nondeposit velocity satisfying channel depth is presented under fixed bed model test condition

    摘要通過對甌江口外段河床演變分析，以及8種航道治理工程的物理模型試驗，提出了在定床試驗條件下滿足航道水深所需的不淤流速的估算方法。
  16. Analysis of bed deformation of the channel regulation project at lubao shallow reach of beijiang river

    沖積性河流淺灘整治水位與整治線寬度確定
  17. The resistance coefficient of the river, the scale affect of the rigid bed model, and the rule of channel dredging are also discussed in order to obtain the reliable conclusion

    對河床的阻力系數、定床模型試驗的比尺效應以及電廠下。游清挖原則進一步研究，以期給出較明確的結論。
  18. This paper puts forward several views as the follows. for the siso test task, the esvrst ( electro - hydraulic servo vehicle road simulation test - bed ) system may be describe ^ by siso carma. for the multi - output test task, such as to reappear multi - channel waveform of acceleration, the inputs and outputs is coupled, the esvrst system must be describe ^ by mimo carma

    針對上述問題本文提出了對于電液伺服汽車道路模擬試驗臺單輸入單輸出系統的試驗可以用單輸入單輸出carma模型描述；對于電液伺服汽車道路模擬試驗系統多點輸出的加速度隨機波形再現試驗以及其它多輸入多輸出問題，因為存在輸入輸出量之間耦合關系，所以必須用多輸入多輸出carma模型描述。
  19. In the past decade, we built a total of some 31 kilometres of concrete channel bed in 16 major river training and flood prevention projects ( see annex 1 for details )

    在過去十年，我們在16項主要河道治理及防洪工程中建造共約31公里混凝土河床，詳見于附表一。
  20. Because the channel bed was adjusted by scouring and silting in long - term, the required period to reach basically equilibrium was predicted based on the typical and assemble hydrographic data in long series after the building of lijia flume dam

    應用李家峽建壩后典型水文年長系列的組合資料，預報了河床經長期沖淤調整后達到基本平衡需要的時間。
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