overland flow 中文意思是什麼
overland flow
解釋
表面徑流-
Design of overland flow velocity instrument based on fpga
的坡面流流速儀的設計 -
The results of flume experiment indicated that, the flow velocity and froude number of the overland flow would fall with the rainfall splash intensity rose ; the flow depth and resistance coefficient would enhance with the rainfall splash intensity increased
水槽試驗結果表明：水槽槽面薄層水流流速及弗汝德數隨雨滴打擊強度的增加而降低，水深、阻力系數隨雨滴打擊強度的增加而增加。 -
By means of the study the main results are listed as follows : ( 1 ) the results of flume experiment and simulated rainfall experiment with a fixed intensity indicated that, the influencing degree of rainfall on overland flow velocity had something to do with the runoff discharge above and rainfall intensity
通過研究取得了如下結論： （ 1 ）水槽放水試驗和定雨強模擬降雨試驗結果表明，降雨對坡面薄層水流流速的作用與放水流量和雨強大小有關。 -
Through examination of the recession limbs of the observed hydrographs, during periods with no rain and thus no surface runoff, one can determine the value of. for this catchment, a value of 0. 8 is obtained. the simulated subsurface runoff at each grid is routed to the outlets through a unit - hydrograph method for overland flow and the linear saint - venant equation for channel flow to get the discharge at xixian station
對所研究的流域而言，經過估算消退系數為0 . 8 .耦合著這兩種不同地下徑流機制的clm模型都可以計算出每個網格的地表地下徑流深，採用dag lohman 34 ， 35發展的匯流模型進行匯流由於是研究地下徑流，所以取每個網格的地表徑流為0 ，該模型採用單位線計算坡面匯流線性聖維南saint - venant equation進行河道匯流 -
The simulative calculation results show that all the three measures mentioned herein have larger effects on the infiltration, runoff, flood peak flow and overland flow and can greatly alleviate the pressure of the draining pipeline, clip the flood peak and increase the infiltration as well, if they are taken as the additional important measures of urban drainage for flood control
模擬計算的結果顯示，以上3種方式對入滲、徑流、洪峰流量、坡面流等均有較大影響，作為城市防洪排水的重要輔助措施，可以極大地緩解排水管道壓力，同時削減洪峰、增加入滲。 -
Experimental study on delay of grass coverage on overland flow
草被覆蓋阻延坡面流作用試驗研究 -
Based on swmm ( storm water management model ), a typical urban region is selected to calculate the status under the design storms with different frequencies in the region, such as drainage effect and water - logging, overland flow on road etc., and simultaneously, the storm floods under different conditions, including reforming the protruding green belts into plain or concave ones, placing flood storage areas etc., are simulated with the evaluation on their effects
摘要以swmm為基礎，選取北京市典型小區，計算不同頻率設計暴雨下小區排水效果以及積水、道路坡面流等情況，同時進行不同情景下的暴雨洪水模擬並評價其影響，包括改凸式綠地為平式和凹式、設置蓄洪區等。 -
The geomorphological instantaneous unit hydrograph ( giuh ) is viewed as the frequency distribution of the times of arrival of individual water deoplets at the catchment outlet. the travel path, for a typical hillslope cell. consists of a hillslope fraction, corresponding to overland flow and a stream fraction, corresponding to concentrated channeled flow. to obtain the time of travel, velocities must be defined. hillslope and stream velocities vary with location and must be strongly correlated with slope, and therefore a spatial distribution of velocities and hence of travel times could be obtained. the present methods of giuh neglect any time delays associated with overland flow pathways
地貌單位線被看作是流域上各水質點在弱相互作用下，到達流域出口匯流時間的頻率分佈。對於一個典型的山坡型網格單元，匯流路徑由兩部分組成，即坡地部分和河道部分，為了得到匯流時間，必須首先確定匯流速度。坡地和河道的匯流速度隨著區域位置而變，並且必然與坡度有關，因此，可首先計算流速的空間分佈，進而得到匯流時間的空間分佈。 -
According to the observation data and outcomes of artificial rainfall, based on the overland flow formulas established slope farmland runoff model
摘要在野外模擬降雨的基礎上，建立基於一維聖維南運動方程的黑土區坡耕地徑流模型。 -
On the basis of consulting a large number of literatures domestic and aboard, the present situation and latest development of hydrodynamic characteristics of overland flow and slope erosion dynamic process were reviewed. aiming at revealing the effect of rainfall splash intensity on hydrodynamic features of sheet flow and slope erosion, with a combination of runoff experiment and simulated rainfall experiment with a fixed intensity, applying hydrodynamic and erosive theory, the effect of rainfall on overland flow velocity and the influence of rainfall splash intensity on hydrodynamic features ( such as velocity, flow depth, flow patterns, resistance ) of sheet flow on slope and the influence of rainfall splash intensity on the overland flow sediment contain was researched
本文在查閱了大量國內外文獻資料，全面了解了坡面流水動力學特性及坡面侵蝕動力過程等方面的研究現狀及最新進展的基礎上，以揭示雨滴打擊動能對坡面薄層水流水動力學特性及坡面侵蝕的影響為目標，採用水槽放水試驗和定雨強模擬試驗相結合的方法，運用水動力學與侵蝕理論，研究了降雨對坡面薄層水流流速的影響，雨滴打擊強度對坡面薄層水流流速、水深、流態、阻力等水動力學參數的影響，雨滴擊濺作用對坡面流泥沙含量的影響。 -
During the rainfall experiment with a flow discharge, the influencing degree of rainfall splash intensity on the overland flow sediment contain had something to do with the runoff discharge above
在放水加降雨試驗中，雨滴打擊強度對坡面流泥沙含西安理工大學碩士學位論文量的影響與放水流量大小有關。 -
This paper presents the principles of swmm model, which consists mainly of three parts, i. e. ground surface rainfall sub - system calculation, overland flow sub - system calculation and storm - sewer flow sub - system calculation
摘要介紹了swmm模型原理，包括地表產流子系統演算、地表匯流子系統演算和傳輸子系統流量演算。 -
Under the less flow discharge, the rainfall splash intensity did n ' t almost have a remarkable effect on the overland flow sediment contain, under the greater flow discharge, the overland flow sediment contain would increase with the rainfall splash intensity rose
當放水流量較小時，雨滴打擊強度對坡面流泥沙含量影響不明顯;當放水流量較大時，坡面流泥沙含量隨雨滴打擊強度的增加而增加。 -
The raindrop splash would accelerate the velocity of shallower flow under a smaller flow discharge, and the higher rainfall intensity, the greater extent the flow velocity augmented. under a bigger flow discharge, the raindrop splash would slow down the velocity of the overland flow, and the higher rainfall intensity, the smaller extent the flow velocity decreased
當放水流量較小時，降雨使坡面薄層水流流速增加，且雨強越大，流速增幅越大；當放水流量較大時，降雨使坡面薄層水流流速降低，且雨強越大，流速減幅越小。 -
( 3 ) the results of soil trough experiment and simulated rainfall experiment with a fixed intensity indicated that, the rainfall splash intensity had a remarkable effect on the overland flow sediment contain. during the single rainfall experiment, when the rainfall splash height was less than 5 meters, the overland flow sediment contain would add with the lower rainfall splash height increased ; when the rainfall splash height was more than 5 meters, it would drop with the higher rainfall splash height increased
（ 3 ）土槽試驗和定雨強模擬降雨試驗結果表明，雨滴打擊強度對坡面坡面流泥沙含量有顯著影響。單降雨實驗中，當降雨高度小於5m時，無論雨強大小，坡面流泥沙含量隨雨滴打擊強度的增加而增加；當降雨高度大於5m時，坡面流泥沙含量隨雨滴打擊強度的增加而降低。
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