The most residual slide force of unit width is 9020kn / m ( iii - iii section ) when stability coefficient is 1 . 15 四道溝滑坡滿足設(shè)計(jì)穩(wěn)定系數(shù)1 . 15時(shí),最大單寬剩余下滑力9020kn m ( -剖面) 。
Uning the experimental data , the dec r eased percentages of conjugate depth , length of hydraulic jump or unit width hydr a ulic jump volume with the increased dissipated energy facilities are calculated 并通過模型試驗(yàn)驗(yàn)證了消能的理論分析,計(jì)算了新增設(shè)施的消能量、躍后水深、水躍長度或單寬水躍容積減少的百分?jǐn)?shù)。
The results show that there is a power function relation between rainfall intensity and runoff duration and a linear relation between rainfall intensity and sediment transport rate of unit width , and we find the experienced coefficient of above relations through regression analysis 結(jié)果表明,產(chǎn)流時(shí)間和降雨強(qiáng)度之間存在冪函數(shù)關(guān)系,與單寬輸沙率之間存在線性關(guān)系,單寬輸沙率與單寬流量之間亦存在線性關(guān)系。
Abstract : characteristics of film hole irrigation and effects of irrigation technological parameters on ir - rigating quota are analyzed , and the relationships among discharge per unit width , hole spacing and ir - rigation quota are studied in this paper , based on field experimental data 文摘:根據(jù)膜孔灌溉大田灌水試驗(yàn)資料,分析了膜孔灌溉特點(diǎn)和灌水技術(shù)要素對膜孔灌灌水定額的影響,研究了單寬流量與開孔率與膜孔灌灌水定額的關(guān)系。
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(jì)算了新增齒墩設(shè)施的消能量,同時(shí)計(jì)算了新增齒墩設(shè)施的躍后水深、水躍長度和單寬水躍容積減少的百分?jǐn)?shù)。結(jié)果表明,采用齒墩設(shè)施,可增進(jìn)消能作用,并取得顯著的經(jīng)濟(jì)效益,達(dá)到附加射流水躍理論所預(yù)期的效果。
The economic benefits of new additional energy dissipation facilities are estimated in terms of the decreased percentage of the sequent depth of hydraulic jump and length of jump , or the capacity of hydraulic jump under the unit width . the additional flow hydraulic jump theory has been demonstrated by model tests 文中用新增齒墩設(shè)施的躍后水深、水躍長度和單寬水躍容積減少的百分?jǐn)?shù),估計(jì)新增設(shè)施的經(jīng)濟(jì)效益,并通過模型試驗(yàn)驗(yàn)證了附加射流水躍消能的理論分析。
Abstract : through the theoretical liquid dynamics complex study to the bridge pier and abutment circling flow , this paper related with bridge abutment maximum clear water equilibrium scouring experiment ? s analyses has made out the bridge abutment ? s velocity circulation , maximum flow capacity per unit width , and the maximum part scouring depth counting method 文摘:對不可壓縮理想流體橋臺平面繞流復(fù)勢研究,確定橋臺繞流流速環(huán)量和橋臺極限繞流流量,并結(jié)合清水極限平衡沖刷實(shí)驗(yàn)進(jìn)行橋臺最大局部沖刷深度的理論探討
Current . in order to make diffluent piers with low ridge to be popularized and applied , the surface wave of low fr . current is chosen as the research object . we measure the surface wave elements and the velocity distribution of various diffluent piers scheme by the experiment of physical model . we also analyze the average wave height , the the average value of the square of wave , unit width of the wave ' s energy , the probability density distribution of wave height , and the power chart character , so as to reveal the weakening wave mechanism of the diffluent piers 低fr水流的核心是波浪問題,為了低坎分流墩的推廣應(yīng)用,本研究以低fr水流的表面波浪作為研究對象,通過物理模型試驗(yàn),對各種分流墩方案消能工的下游水面波浪要素、流速分布進(jìn)行測試,分析低坎分流墩下游波浪的平均波高、均方根、單寬波能、波高概率密度分布及功率譜特性變化規(guī)律,從而揭示了低坎分流墩的削波機(jī)理。