head water level 中文意思是什麼
head water level
解釋
上游水位-
Abstract : the qiantang estuary with violent hydrodynamic conditions is well known for its tidal bore. the regulation of the estuary in the past, especially the progress since the founding of new china are reviewed. the principles of the regulation and planning of the qiantang estuary formulated in 1960s are expounded, i. e., to narrow the river to reduce the tidal prism, and to increase the ratio of the river flow to tidal discharge. the experience of estuary regulation / reclamation is summarized, especially the engineering measures to protect the groin head and to use polder dykes as sea defense works. finally, the effect is analyzed of the large - scale constraction / reclamation in the estuary on the tides, flooding high water level, estuary bed and the northern deep waterway in the hangzhou bay
文摘:以涌潮聞名的錢塘江河口，動力強勁，破壞力極大.回顧錢塘江河口歷代治理情況，重點記述1949年以來治理工作的進展，論述60年代提出的錢塘江河口治理規劃的指導思想，即縮窄江道，減少進潮量，增大山潮水比值的整治原則.總結整治規劃實施過程中治江圍塗經驗，特別是「以圍代壩」和丁壩壩頭保護等工程措施.分析錢塘江河口大規模治江圍塗后對錢塘江河口潮汐、洪水位、河床以及杭州灣北岸深槽的影響 -
Using a vortex - flow drop shaft to convey water from a high level to a diversion runnel under the condition of high water - head and large discharge is a new kind of technology in the scheme of reusing a diversion tunnel as a discharge tunnel
近年來，為解決高水頭、大流量導流洞改建泄洪洞的技術難題，旋流式豎井泄洪洞逐漸成為研究熱點之一。但迄今為止，該技術尚未得到推廣應用，其主要原因在於人們對豎井螺旋水流運動特徵缺乏足夠的了解和深入的研究。 -
The result shows that the trench wall failure at shallow depth is the major failure mode of the slurry - supported excavation, and that the length of the excavated trenches and the difference between the slurry head and the water level are the key parameters controlling the stability of the slurry - supported excavation
結果表明，淺層槽壁失穩是泥漿護壁開挖的主要失穩型式，開挖槽段的長度和泥漿液面與地下水位面的高差是控制泥漿護壁開挖穩定性的關鍵參數。 -
Comparison of water level between measured and computation shows that the local head loss coefficient cannot give head loss by spur dike completely, and the effective area of passage is difficult to be ascertain. for this reason the two methods for water surface profile computation cannot predict the raise of water level upstream the spur dike accurately
計算結果表明，局部水頭損失系數並不能完全反映出由於丁壩阻擋所帶來的水頭損失，而丁壩附近的有效過水面積難以準確地確定，這些導致前兩種方法均不能很好地計算出丁壩上游水位的壅高值。 -
There are several important issues to that attention should be paid in the design of test bed, such as the measurement of the temperature difference between the inlet and outlet of test section and the temperature of cooling water in the inlet and outlet of condensing tubes, filled volume of the steam boiler and its level control, the determination of the natural acting head of high temperature tank and design of the cooling water flow of measuring tank
試驗臺由高溫工質自然循環子系統、冷卻水機械循環子系統和計算機監測控制子系統構成，試驗段進出口溫差及冷凝管進出口溫度的測試、蒸汽鍋爐充注量及液位控制、高溫水箱自然作用水頭的設計、冷卻水流量計量水箱的設計等是試驗臺設計中值得重視的問題。 -
It possesses the characters of high head, high velocity, long operation time and large variation range of water level
它具有水頭高、流速大、運行時間長、水位變幅大等特點。 -
The head of water is maintained at a permanent level so that the velocity and curve of the jets remain constant
水頭被維護在一個永久水平以便噴氣機的速度和曲線依然是恆定。 -
The bingling ( si gou xia ) hydropower station is a series of power stations on the yellow river, in order to the expropriation and the emigration be reduced, after studied the relation of water level and flux of the bingling hydropower station on the taping dam location, under the different running circumstances of the liujiaxia reservoir, to located the bingling hydropower station on the head of the liujiaxia reservoir, and keeping the total installation and the generated energy not be changed all made use of the floodwater of the liujiaxia reservoir
摘要黃河炳靈（寺溝峽）水電站是黃河幹流上的一個梯級電站，為了減少征地移民損失，經對炳靈水電站（塔坪壩址）尾水斷面在劉家峽水庫不同運行方式下的水位與流量關系進行分析研究，在總裝機和年發電量基本不變的情況下，充分利用劉家峽水庫汛限水位，將電站樞紐選址在其電站庫尾內。
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