river silting 中文意思是什麼
river silting
解釋
河流淤沙-
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。 -
In recent years it is more severe because of temperature changes, mankind activities, scouring and silting. the special geographical position, hydrometeorological condition, river course characteristics are main reasons for ice flood
由於近幾年來氣溫的變化、人類活動、河床沖淤等流域環境的變化，使得凌汛的威脅不僅依然存在，而且發生冰害的河段有所增多，影響范圍隨之擴大。 -
Analysis on silting up in center river discharging system of sibao sewage treatment plant in hangzhou
杭州市四堡污水處理廠江心排放系統淤積現象分析 -
First, erosion resulting from exce ive deforestation in the u er reaches of the river and, second, heavy silting which raised the riverbed in the main cha el
第一，過度砍伐引起的河流上游的侵蝕，第二，嚴重的泥沙淤積抬高了主幹道的河床。 -
First, erosion resulting from excessive deforestation in the upper reaches of the river and, second, heavy silting which raised the riverbed in the main channel
第一，過度砍伐引起的河流上游的侵蝕，第二，嚴重的泥沙淤積抬高了主幹道的河床。 -
Based on the back silting analyses of the sandbar - dotted waterway in the oujiang river estuary after three times dredging, reasons for back silting in the waterway are presented considering influences of flow dynamics, waves and salinity distribution on sediment concentration
摘要通過對甌江口攔門沙航道3次疏浚后的回淤分析，以及從甌江口的水流動力條件、風浪、鹽度分佈對含沙量影響等的初步分析，得出了攔門沙航道回淤的原因。 -
The results indicated that with the change of water and sand condition and the altitude of tongguan and the development of the industry and agriculture in recent decades, the water environment of wei river had changed largely, which were shown as follow : annual runoff and seasonal flood decreased sharply ; water stream of large discharge decreased and the range of runoff decreased greatly ; sediment load per year decreased generally, sediment concentration of water increased, and the sand silting up was serious ; water channel swung and shrank, and water regime deteriorated ; frequencies of big floods decreased obviously, and hyper concentrated flood increased obviously ; water levels of the same runoff rose universally, and the frequencies of the floods increased and aggravated ; water pollution was very serious
結果表明，近期隨著水沙條件、潼關高程等的變化及工農業的發展，渭河的水環境發生了巨大變化，表現在年水量及汛期水量銳減；大流量級水流出現次數減少，水量減少幅度大；年輸沙量總體減少，河水含沙量增大，泥沙淤積嚴重；河道向擺動型發展，河道萎縮，河勢惡化；大洪水發生的次數顯著減少，高含沙小洪水明顯增多；同流量洪水位普遍抬高，洪災發生次數增加，洪災加重；水質污染極為嚴重。 -
Two major factors contributed to devastating summer flooding along the yangtze river and its tributaries. first, erosion resulting from excessive deforestation in the upper reaches of the river and, second, heavy silting which raised the riverbed in the main channel
兩個主要因素導致了夏季長江及其支流的特大洪水。第一，過度砍伐引起的河流上游的侵蝕，第二，嚴重的泥沙淤積抬高了主幹道的河床。 -
It result in water level rising, hypo - salinification aggravating, sediment silting up, the lake atrophy, marsh extending and nature disaster such as droughu waterlog ^ salinification occurring frequently. completely analysis to geology and hydrology conditions of the district along yellow river in shandong has been applied in this paper and aquifer ' s hydrological characteristic and subsurface flow ' s characteristic have been analysed as keystone in the paper. after finding out the distribution rule and formation conditions of the shallow layer " s ground water resource, divide the district into three hydrological sections according to hydrological conditions and subsurface flow characteristic
本文對山東沿黃地帶地質、水文地質條件進行了全面系統的分析，並重點分析了區內含水層的水文地質特徵及地下水運動特徵，進一步查明了淺層地下水資源的形成條件和分佈規律，根據水文地質條件及地下水運動特徵，劃分出三個水文地質區，劃分並論證了粘土裂隙含水層的形成及供水意義；確定了科學的水文、水文地質參數，為準確地計算淺層地下水資源奠定了可靠的基礎；根據淺層地下水資源形成特點，建立了地下水均衡方程式，據此，計算了區內淺層地下水資源及淺層地下水可采資源。 -
Through the statistics and analysis of runoff and amount of sand lost in the downstream of weihe in recent years, it is discovered that in the downstream of weihe the magnitude sand season was ahead of the main flood season relatively within the year ; variation tendency of annual runoff and amount of sand lost was identical basically, and the quantity of water and sand at huaxian gauging station was tailing - off continuously from the 1960 to 2005 ; there was direct relation between the situation of rushing or silting deposits and rainfall at this section of the river : the river depositing in the year which is rich rainfall, the eroding in the poor rainfall
摘要本文通過對近6年渭河下游水沙量數據的統計和分析得出，渭河下遊河段年內多沙期較河流主汛期有所提前；年徑流量和年輸沙量的變化趨勢基本一致，而且自60年代至2005年華縣站的水沙量持續呈遞減趨勢；河流的沖淤情況與該河段的降雨量有著直接的關系，當年平均降雨量小的時候河流以淤積為主，當年平均降雨量大的時候河流以沖蝕為主。
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