river channel erosion 中文意思是什麼

river channel erosion 解釋
河道沖刷
  • river : n 1 河，江。 Rriver Thames 或 the R Thames 泰晤士河； the Hudson R 〈美國〉哈得孫河。 the Rriver ...
  • channel : n 1 水路，水道，渠，溝；海峽；河床，河底。2 （柱等的）槽，凹縫；【機械工程】槽鐵，凹形鐵。3 〈比...
  • erosion : n. 1. 腐蝕，侵蝕（作用）。2. 【醫學】糜爛，齒質腐損。
  1. First, according to measured data and literature, the river channel evolution rule and its reasons in the southern branch of the yangtze river are discussed from the perspectives of historic evolution, recent evolution and the tendency prediction of river channel evolution. besides, the local reservoir has been studied from the changes in thalweg and section as well as the calculation of local erosion and deposit. consequently, the stability and feasibility of reservoir construction in the river section are approved

    首先根據大量實測資料及文獻資料，就歷史變遷、近期演變、河演趨勢預測等方面，初步探討了長江口南支河段河道演變規律及原因，並具體就深泓線的變化、主槽斷面變化、局部沖淤計算等方面對擬建水庫局部區域進行了分析，論證了工程河段建設水庫的穩定性及可行性。
  2. It is mainly by analyzing the features of sediment concentration distribution in vertical in this paper, and then the problems of effect of headwork gates on sediment prevention, relation between distribution of sediment deposition in irrigated areas and its treatment and utilization, estimating the influence of withdrawing water and sediment on channel deposition and erosion in lower yellow river, and treatment and utilization of the sediment entered into canals are discussed

    本文主要從分析計算含沙量沿垂線分佈特點，探討渠首防沙的作用，分析灌區泥沙淤積分佈特性與泥沙處理利用的關系，分析計算引水引沙對黃河下遊河道沖淤影響及入渠泥沙的處理利用等問題。
  3. The yangtze river valley is very prone to accidents of bank collapse because the river banks have slowly been washed away by the waves and tides. in order to protect the banks and control the water channel, erosion control mattresses are placed at the bottom of the river. these mattresses are made of a special type of geotextile fabric

    為了保護堤岸和治理航道，目前國際上流行的方法是在江底鋪設一種軟體排，軟體排是一種特殊的土工織物，在其上綁定一些重物后，將其沉入江底，可以起到護堤和治理航道的作用。
  4. Stream and river control works may have a serious local influence on accelerating channel erosion.

    水流及河流控制工程對加速河道沖刷有嚴重影響。
  5. 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。
  6. The outcomes show that not only the channel near the outlet has been extended, but also the created land area increased to varying degrees during the tests of a regulated discharge regime of the river and ; a regulated discharge regime has significant roles on keeping the balance of erosion and deposition of the estuary

    結果表明：調水調沙期間，河口口門附近不管是河道延伸，還是造陸面積都有不同程度的增加；調水調沙對河口的沖淤平衡有重大的作用。
  7. Monitoring the sink of the estuary by utilizing remote sensing technique can not only directly show the effects of scouring - erosion variation of the channel at estuary section through a regulated discharge regime of the river, but also is the best presentation of the test influence to the estuary in plane

    利用遙感技術對河口尾間進行監測，可直觀反映調水調沙對河口段河道沖淤變化的影響程度，也是調水調沙試驗在河口影響的平面形態的最好展現。
  8. 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。
  9. At present, many fields remain to further research, especially the profound combination of gis technique with ece ( estuarine and coastal engineering ), which should be developed for the purposes as follows : ( 1 ) to serve the huge comprehensive work in changeable natural conditions and difficult construction conditions which takes a long period and covers a large region, e. g. the regulation work of deepwater channel in the yre ( yangtze river estuary ) ( 2 ) to combine the gis with applied numerical model ( 3 ) to study the hydrodynamic processes and characteristics of waves, tidal currents and sediment transport, as well as the affection carried by the regulation work in an estuary ( 4 ) to monitor and to analyze ees ( evolution of erosion and sedimentation ) and the variation of riverbed ( 5 ) to play a role of dynamic supervising of a engineering project

    目前尚有許多有待進一步研究的領域，尤其是以服務于長江口深水航道治理這樣規模大、周期長、影響區域廣、自然條件復雜、施工情況多變的國家重點工程為目的，將gis與專業應用數學模型結合，對河口海岸波浪、潮流、泥沙運動的動力機制，以及整治工程建築物對其影響的研究，對入海航道沖淤和河勢演變的監測分析，對施工進展和工程效果實現「動態」監控和管理，尚缺乏同gis技術的深入有效結合。
  10. Therefore, nowadays major problem is how to reduce the slope cultivated land ' s soil erosion and sediment concentration transporting to three gorges reservoir in order to prolong the three gorges engineering ' s use time and protect the safety of the middle and lower reaches channel of yangtze river

    因此當前的主要問題是如何臧輕坡耕地土壤侵蝕，減少進入三峽庫區的泥沙量，延長三峽工程的運轉時間，保障長江中下遊河道的安全。另外，按土壤平均厚度78 。
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