downstream engineering 中文意思是什麼

downstream engineering 解釋
下游工程
  • downstream : adv. ,adj. 順流（的）；在下游（的）。
  • engineering : n. 1. 工程（技術），工程學。2. 開車技術。3. 土木工程，工事。4. 操縱，管理。
  1. Using the model experiment data, the authors calculate the decreased percentage of water jump length, unit width hydraulic jump volume and the water depth downstream of the jump ; and also calculate the energy dissipation rate of dentoid baffle, it is concluded that the device of dentoid baffle can increase the energy dissipation rate of hydraulic jump theory and decrease the engineering cost

    計算了新增齒墩設施的消能量，同時計算了新增齒墩設施的躍后水深、水躍長度和單寬水躍容積減少的百分數。結果表明，採用齒墩設施，可增進消能作用，並取得顯著的經濟效益，達到附加射流水躍理論所預期的效果。
  2. The water current flows over the top of the dentoid baffle to the hydraulic jump as additional momentum. while it is cooperated with a stilling basin, the flowing condition emerged in the basin may be improved greatly and the length and downstream water depth required by the basin can be decreased to a great extent. such an appliance may be also used to solve the problems of insufficiently dissipating water flow energy and aerating flow, which are often faced with those hydraulic engineering constraction as acted by high waterhead, great specific discharge and low froude number

    本文通過齒墩頂部的擴散水舌所形成的附加射流，從上部射入水躍，即可改善消力池內的水流流態，又可降低第二共軛水深，減小水躍長度，增進水躍消能效果，同時還能解決大單寬、低佛勞德數條件下摻氣和消能不足的問題，試驗證實它是一種安全、經濟的消能工。
  3. 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。
  4. Through the experiment, four engineering questions are answered : 1. whether the notching construction can be done on the wet beach of the downstream of the yellow river with the blasting method ; 2. whether the ditches can be created by the blasting and how long can be maintained ; 3. whether the ditches can be used to divert water and form a new river channel by water flushing ; 4. the impacts on the safety of the existing projects therein from the blasting concerned

    通過試驗，回答了在黃河下游濕灘上能否進行爆破開槽施工；爆破能否形成溝槽，形成的溝槽可以保持多長時間；能否作為引槽引水，通過沖刷形成新河槽；爆破開槽對已有工程的安全影響等四方面的問題。
  5. Based on the analysis of the application of 3 - d geonet sprig - grass in regulation engineering of downstream beijiang river, the conclusion is drawn that this technique can not only satisfy the need of sideslope reinforcement, but also improve the ecological environment of the river bank and promote environment protection, thus it is a practical technique worthy of popularizing

    摘要通過三維土工網植草在北江下游航道整治工程中的實際應用分析，得出該技術不僅能夠加固護岸邊坡，而且能夠改善河岸生態環境，具有環保功能，是值得推廣應用的新型技術。
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