航道開挖 的英文怎麼說
中文拼音 [hángdàokāiwā]
航道開挖
英文
navigation dredging-
The excavation on the left side of xiangjiaba hydropower plant would form the large - scale artificial slope, which refers to the main project near the source of the river and the project of intake sea - route near the mouth of the river, and its height would reach 150 meters
向家壩水電站左岸開挖將形成規模較大的人工高邊坡，涉及上游段的主體工程和下游段的引航道工程，工程邊坡的高度達150m 。A 2 - d hydrodynamic - numerical model was applied to typical rocky rapids called jiyutan by comparing different computational models. based on the comparison of different schemes, the change of the discharge and the flow current in a branch were analyzed, and the relationship between the flow condition and excavation area, scope as well as mode was discussed, the conclusions show : ( 1 ) in a branching rocky rapids, the velocity may be reduced and flow condition can be improved by excavating one channel partly
本文在對各種數學模型比較的基礎上，應用二維水動力數學模型研究典型石質汊流灘? ?廣西潯江鯽魚灘航道整治工程方案，通過各方案計算結果比較，分析了不同汊道的開挖及汊道內不同開挖面積、開挖范圍以及開挖方式所引起的分流比及工程區域航道水力條件的變化規律，研究結果表明： （ 1 ）對于石質汊流灘來說，在某一汊道通過局部開挖河槽，擴大過水斷面面積，可以達到降低工程段流速、改善局部水流條件的目的。The main measures are : damming improving flow condition riverbed excavation etc. riverbed excavation is always used in reducing velocity of a channel with bad flow condition. in singularity channel, velocity can be reduced with the increase of crossing area by excavating riverbeds
整治採取的主要措施有：築壩壅水、改善流態、開挖河槽等等，對于流態惡劣的急流灘，常採用開挖河槽擴大過水斷面面積的方法來降低航道流速。The dredger is one of major facilities in the fields of channel dredge, hydro project, prevent or control flood, ocean development, seaport construction etc. at present, the management maintenance methods of dredger are primary time based maintenance and run - to - breakdown maintenance
挖泥船是航道疏浚與整治、水利工程、防洪搶險、海洋開發及海港建設的主要工具。目前對挖泥船管理維修的方法主要有定期維修和事後維修。In this part, the first work is pretreatment of a numerical model, including creating calculating grids automatically, improvement of the linear boundary technique and so on. the second work is to estimate the siltation of a basin or channel by liu ' s equation. the third work is to build an edbms ( engineering data base management system ) for the result of mathematical model
其中主要的工作是：其中主要的工作一是數學模型的前處理，計算網格自動生成，線邊界法的優化；二是應用劉家駒公式在長江口深水航道治理工程地理信息系統的支持下實現港池、航槽開挖的實時回淤估算；三是將計算成果形成gis管理和支持下的工程數據庫系統（ engineeringdatabasemanagementsystem ） ，同時嘗試解決時間序列數據如地形沖淤變化，潮位、流速過程的分析、查詢和顯示問題，並實現實時、互動的動態演示及三維可視化。Excavating riverbeds in one channel may not only reduce the velocity area in some areas but also increase the velocity in other areas by increasing flow rate in this channel without correspondent changes in riverbeds of rocky rapids. in result, the velocity in waterway may be increased instead of be reduced, the flow condition may also be deteriorated. thus, which branch should be excavated and how to excavate in improving the flow condition of the branch should be further explored
但在分汊河道內，情況較為復雜，在一汊河道內採取開挖措施后，雖然其過水斷面有所增加，局部流速相應降低，但是由於工程后，汊道的分流比將會相應變化，而石質河床一般無法通過沖淤變化以適應水流條件的改變，因此，航道內工程處的流速可能降低，也可能不降反而有所增加，惡化了航道的水流條件。For the area of tianjin port which is short of sandy material, cement solidified soil, used as a new type of fill material, can not only help reduce the long distance transportation of sand fill, save energy and cut down engineering cost, but also make full use of the mucky clay dredged from basins and waterways
摘要採用水泥固化土作為新的充填材料，對于缺少砂土的天津港地區，不僅可以減少砂料長途運輸，節省能源，降低工程造價，而且可以充分利用港池和航道開挖的淤泥質粘土。( 3 ) in excavation channel, the velocity in engineering area may be reduced, but the velocity in other areas of this channel may be increased and the flow condition may be deteriorated as a result of the increase of flow rate in this channel. thus, it should be discussed and studied before engineering practice
（ 3 ）在汊道的開挖中，工程區域的局部流速可能有所下降，但因分流比有所增加，可能導致其餘部分河段的流速有所增加，惡化航行水流條件，因此在工程前需要進行充分的論證和深入的研究。Abstract : variations of flow pattern, flow velocity in deep poo l and side bar, mainstream thread, and water surface, caused by excavation project, are investigated by two - dimensional mathematical model in an orthogonal curvili near coordinate system. the change of bed - load transport rate, and redeposition r ate are predicted. the influences of the excavation project on navigation are ana lyzed. grid - type and flat - type excavation alternatives are proposed and discuss ed
文摘:採用正交曲線坐標系下的河道平面二維數學模型，研究了嘉陵江何家磧邊灘采砂后河道流勢、流態、灘槽流速、主流位置、水面高程及比降的變化規律，預測了采砂方案完成後卵石推移質輸沙率變化及其對航道的影響，並對格形開挖和平整開挖方案進行了比較分析An analysis of the seabed evolution in the outer channel of qingdao port
青島港外航道開挖區海床演變趨勢分析A trailing suction hopper dredger is one of the most popular dredging tools for regulation of waterway and harbors. it is a large self - propelled and self loaded dredger which can be used in wide water area such as an estuary or a river mouth. it is adaptive economical, it is widely used in large dredging projects in most countries in the world
耙吸式挖泥船是最常用的清理河道港口的疏浚工具之一，它是水力式挖泥船中大型自航、自載式挖泥船，適用於水域開闊的海灣、河口，具有廣泛的適用性和經濟性，為世界上各個國家在較大的疏浚工程中廣泛採用。分享友人