water head 中文意思是什麼
water head
解釋
落差-
Roofing accessories. roof skylight with gutter and rain water head for slate and plain tiled roof tops. terminology. dimensions
屋頂附件.石板或平瓦屋頂用帶接水槽和箱屋頂天窗.術語.尺寸 -
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。 -
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。 -
To provide necessary data for design bypass pipe, an enlargement to bi liu river reservoir, the following problems have been studied by hydraulic model and theoretical analysis : the energy losses in water head of the bypass pipe system and of the flow - control valve and their scale effects, measurement and calculation of the discharge of the bypass pipe system during the bypass pipe system operation with and without the new water power station, the hydraulic characteristics of the water tunnel and draw - off pipe, the flow rate of the aqueduct bridge and the draw - off pipe and the water elevation of the flow in the aqueduct bridge during the old water power station operation with and without the new water power station
大連市碧流河水庫供水工程取水頭部由引水渡槽、節制閘、進水閘、泄水閘等建築物組成。由於本工程場地條件限制，增設旁通管后布置非常緊湊，管道急轉角度大且轉彎距離較小，對于管內水流流態是否滿足要求，需要經過模型試驗進行論證，以確保工程的可靠性。旁通管具有上水與泄水要求，對其過流能力也要經試驗確定，為碧流河水庫增建旁通管設計提供依據。 -
For the low water head water control project at a branching channel, its flood discharge capacity is related not only with the total discharge width but also with the discharge width ratio of the two branches
摘要位於分汊河段的低水頭樞紐，其泄洪能力不僅與樞紐的總泄流寬度有關，而且與兩汊泄流寬度之比有關。 -
The impulse type turbines made by ganfa, are ranging form 80 to 1, 000m in water head, 200kw to 20mw in capacity and 0. 55 to 2. 3m in runner diameter
我公司生產的沖擊式機組適應水頭801000m ，轉輪直徑0 . 552 . 3m ，容量20040000kw ，根據安裝方式分為立式臥式兩種，有單噴嘴雙噴嘴和多噴嘴。 -
By sampling in different filter layer and analyse of water head damage in all sampling point, i draw a condusion about filter function of porcelain sand filter is superior to the general filters
通過濾層分層取樣，對各取樣點的水頭損失的分析，得出瓷砂濾料較一般濾料過濾性能優越的結論。 -
Design for stoplog gate with high water head of temporary shiplock of tgp
三峽臨時船閘高水頭疊梁門設計 -
On the basis of analysis for recharge, flow - off and drainage of research area, the paper concludes that the main possible cause for the fall of water head is groundwater exploitation by comparing the curve of rainfall - time and the curve of observation heads of some observation well
在充分分析研究區補給、徑流和排泄規律的基礎上，文章通過比較降雨歷時曲線、部分觀測孔觀測水頭曲線得出開采量可能是影響水頭下降的主要因素。 -
The analysis of effects of reservoir under the high water head upon tunnel seepage flow based on geo - slope
分析高水頭作用下水庫對隧道的滲流影響 -
Research on elastic slab vibration of inverted arch plunge pool under high water head and large discharge
高水頭大流量作用下反拱水墊塘彈性單底板塊振動規律研究 -
It is suitable for unit with a water head higher than 500 meters, and it has been successfully used in the units with a water head of 600 - 800 meters
適用於500米以上的高水頭機組，已分別在600 - 800米水頭段的機組中成功使用。 -
It concludes that percolation of roller compact concrete is of self - compactness by time effect under continuous action of water head and there may exist partial darcy flow regime in roller compact concrete under high water head
認為在持續水頭作用下，碾壓混凝土的滲透具有時效自密性；高水頭作用下的碾壓混凝土可能存在偏達西流現象。 -
Ceramic grain filters ard made of refined pottery clays added with certain modifiers, and processed of grinding, mixing, shaping and high temperature sintering. they do not contain any substances that harmful to people or environment. they are hard and rough in surface, porous inside the structure, and have the advantages of high mechanical strength, large specific surface area and porosity. when used in water treatment, they behave a activated surface property, a great amount of pollutant entrapment, less water head loss in the filter bed, lower consumption of back - flush water, stable in chemical and gbiologic property, and long service life, ceramic grain filters is a new and efficient filter material to increase the water yield, upgrade the water quality, and save chemicals and energy
陶粒濾料是以精製陶土為主要原料，摻加適量改性劑，經粉碎，混練，成型和高溫煅燒而製成的，不含任何對人體和環境有害的物質.其表面堅硬，粗糙，內部疏鬆，多孔，具有機械強度高，比表面積大，孔隙率大的特性.用於水處理中，具有表面性狀好，截污能力強，過濾水頭損失小，反沖洗耗水量低，化學穩定性和生物學穩定性好，使用壽命長的特點.陶粒濾料是一種能增加水產量，提高出水質量，節省藥劑和能耗的新型高效過濾材料 -
Contract agreement pays insurance premium in installment, policy - holder ought to pay at the contract holds water head period insurance premium, pay the others each on schedule period insurance premium
合同約定分期支付保險費的，投保人應當于合同成立時支付首期保險費，並按期支付其餘各期保險費。 -
The result shows that the drainage curtain is of high drainability under smooth drainage condition, and that the variation of the spacing between drainage holes within a certain range is of little influence on the water head distribution of the seepage field
研究表明，排水幕在排水通暢的前提下具有強大的排水能力，其排水孔間距在一定范圍內變化對滲流場水頭分佈影響不明顯。 -
The horizontal swirling flow internal dissipater tunnel being built in gongboxia power station will be the first one reconstructed from a diversion tunnel whose discharge reaches to 1000m vs and water head is more than 100m in china. its scheme ' s argumentation, test research and future apply will have important meanings to the design. research and engineering application of internal dissipation discharge tunnel with swirling flow, will powerfully promote engineering application of this new kind of dissipation mode, which may solve some high velocity problems in high dam construction and provide a engineering example for technological and economical augmentation in a diversion tunnel reconstruction. it is of theoretical and practical importance to promote hydraulic structure researches and development
公伯峽水電站右岸旋流內消能泄洪洞是國內第一個泄量達1000m s 、水頭超過100m ，即將修建的旋流式內消能泄洪洞，其方案的論證與試驗研究以及建成后投入使用，將在國內外旋流式內消能泄洪洞設計、研究與工程應用中具有重要的意義，將有力的推動這一新的消能形式在工程中的應用，從而為解決高壩建設中泄水建築物的高速水流問題與導流洞改建的技術與經濟問題提供工程實例，對推動與發展水工水力學的研究與發展均具有重要的理論與實踐意義。 -
Actually, in the tube engineering, the proportion of the loss of local water head in the loss of pipeline water head is big
在實際管道工程中，閥門閥道的局部水頭損失占管路水頭損失的比例是相當大的。 -
Francis turbine generator set of both vertical and horizontal types are suitable for water head from 10m to 300m. its feature is that the water flow enters the runner inward in a radial direction, changes direction gradually and then passes out axially
水斗式水輪發電機組適用於水頭80 ~ 800米，是利用水流動能沖擊水輪機轉輪旋轉作功，且其噴嘴的射流中心與轉輪在同一平面上。 -
On the heavy silt - laden rivers, desilting at the water intake of hydropower station is a problem widely concerned not only for the large reservoir with high dam and high water head, but also for the runoff river hydropower station with lower water head
摘要在多沙河流上，無論是高壩大庫的高水頭電站，還是低水頭河床式樞紐，電站進水口的取水排沙歷來是一個倍受關注的問題。
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