Obstacles in production restoration and the related reasons in the area around the manwan dam 漫灣庫區(qū)生產(chǎn)恢復(fù)障礙及其原因
Secondly , the general situation and the inner observed systems of manwan are introduced 介紹了有關(guān)漫灣電站的工程概況以及內(nèi)部觀測系統(tǒng)。
The results of application have showed that the used ann model is successful and effective in the hydrologic forecasting of the manwan reservoir 實際應(yīng)用表明,使用該結(jié)構(gòu)的模型在實際預(yù)報過程中取得了良好的效果。
Manwan hydropower station , located in the middle stream of lancang river , is the largest state key construction project in yunnan province 摘要位于瀾滄江中游河段的漫灣水電站是云南省至今投資最大的國家重點建設(shè)項目,電站建設(shè)和運行以來出現(xiàn)了一些社會、經(jīng)濟和生態(tài)環(huán)境問題。
A three - tiered artificial neural network ( ann ) model with a feed - forward , back - propagation net - work structure was developed to forecast river flow in the manwan reservoir 摘要以云南省漫灣水電站歷史徑流狀況為研究對象,運用三層前饋反向傳播神經(jīng)網(wǎng)絡(luò)模型對徑流進行中長期預(yù)報。
The results of the calculation indicate that the modulus of elasticity of manwan dam has entered the attenuation moment after increase and the attenuation will gradually lessen 并對計算得到的結(jié)果進行分類討論分析。計算結(jié)果表明彈性模量經(jīng)過最初一年的增長后就進入衰減期,但是衰減趨勢逐漸平緩。
The observed information is fully analyzed , therefore we can confirm that the present running state of manwan hydroelectric power plant is elastic state . the built model is very important to carry through the later calculation 因此對觀測值的處理方法進行了介紹,對漫灣電站的觀測資料進行全面分析,確定出漫灣電站目前的運行狀態(tài)是在彈性階段,以及壩體與基巖之間的關(guān)系。
Based on the theory of inverse analysis in mechanics and engineering and combined with the concrete gravity dam of manwan hydro power plant , a back - analysis model including the prior information was built and artificial neural network ( ann ) , according to which powerful nonlinear mapping ability , was used to predict the future physical parameters of the concrete 在此基礎(chǔ)上,以大規(guī)模有限元分析軟件ansys為平臺,二次開發(fā)了漫灣水電站砼重力壩運行狀態(tài)分析系統(tǒng),根據(jù)大壩運行監(jiān)測資料,對該電站大壩進行了砼力學(xué)參數(shù)反分析、砼力學(xué)參數(shù)預(yù)測分析以及大壩運行狀態(tài)分析。