crest discharge 中文意思是什麼
crest discharge
解釋
洪峰流量-
Residual voltage kv crest is no more than 50. 0 with nominal discharge current
標稱放電電流下殘壓kv crest不大於50 . 0 -
Many geological and hydrological factors of the river section, where the yellow river water intake engineering is laid out, such as the capacity of the reservoirs along the river section upstream and downstream, the rate of the flow discharge, the erosion and silt of the watercourse, the form of the riverbed and the water current, ice tuck, the convergence of the upstream branches of the river section, flood crest, sand crest size, the capacity for flood discharge of the watercourse, the effect of flood control structure around and the impacts on surrounding environment and the third person " s legitimate rights and interests, should be considered
黃河取水工程的布設要考慮工程所處河段的地質水文等諸多因素。如該河段上下游水庫的庫容，泄水流量、河道沖刷、淤積、河床形態、水流形態、冰塞、河段上游的支流匯入、洪峰、沙峰的大小、河道行洪能力的大小、周圍防洪工程的影響及對周圍環境和第三人合法權益的影響等等。 -
( 2 ) validate whether the crest elevation can meet the require of energy dissipation and erosion prevention during the beginning period of flood discharge. ( 3 ) calculate the altitude of downriver cofferdam, and make it meet the require of energy dissipation and erosion prevention. ( 4 ) calculate some average velocity of flow through some sections, including contracted section in stilling basins behind upriver cofferdam, if the hydraulic jump happen in lower reaches of the river. the program will calculate the average velocity of flow of contracted section and the length of the apron
主要設計內容包括：計算上游圍堰后消力池的尺寸；驗證泄洪初期壩面高程是否能夠滿足消能防沖需要；計算下游圍堰堰頂高程，使其滿足泄洪期圍堰和壩體過流的消能防沖和工程進度的需要；計算部分斷面平均流速，包括：上游圍堰后消力池中收縮斷面的斷面平均流速；壩首和壩末的斷面平均流速；當下遊河道發生水躍時，計算下遊河道的收縮斷面平均流速及需要鋪設護坦的長度。 -
In this paper a date from some real projects are used to analyse the facors that will affect the energy dissipation and erosion prevention. such as flood discharge across the cofferdam, crest elevation, downriver cofferdam, roughness coefficient and the gradient of the surface of dam, and so on. in this paper, the program based on hydraulics is checkout by the tankeng waterpower project in zhejiang. the results prove that this program can be used to design any project where there is no obvious side shrinking phenomena
本文結合工程實際對影響圍堰和壩體消能防沖的各種因素，包括過堰流量、壩面高程、下游圍堰堰頂高程、壩面糙率、壩面坡度等進行了分析，並藉助水力學知識和計算機語言編寫了圍堰和壩體的優化計算程序，並利用浙江灘坑水電站工程對所提出優化計算程序進行了驗證，證明了該程序在沒有明顯的側收縮的影響下，計算結果與實際情況較為吻合。
分享友人