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    Selection of Energy Dissipators With large Unit Discharge
    大单宽流量消能工的选择
    Study on Distribution Coefficient to Unit Discharge of Pollution in River
    污染带单宽流量分布参数研究
    The border dimensions had influences to application efficiency,borders having 2~3 m wide,not more than 50 m long,inflow rate of unit width is from 6 L/(m·s) to 8 L/(m·s),and border slope is from 3‰ to 5‰ can get high application efficiency.
    在覆盖秸秆畦田以畦长小于50 m,畦宽2~3 m,单宽流量以6~8 L/(m.s),坡度以3‰~5‰为宜。 为提高秸秆覆盖灌水效率,应加强耕作管理,消除反坡。
    Characteristics and Effect of Energy Dissipation of Water Flowin Large Unit Width Discharge of Stepped Spillway
    阶梯溢洪道大单宽流量的水流特性及消能效果
    Research and Test for Energy Dissipation Form of Low Head,Large-unite Discharge Flood Discharging
    低水头、大单宽流量泄洪消能方式研究
    2. Connecting to the need of certain engineering, a new form of energy dissipation, named Multi-Horizontal Submerged Jets, which based on the energy dissipation mechanism of spatial 3D hydraulic jump and multi-jets trajectory flowbucket, are put forward.
    2、结合工程实际需要,提出了基于空间三元水跃消能机理和挑流多股淹没射流消能机理的多股多层水平淹没射流消能形式。 多股多层水平淹没射流是将高流速、大单宽水流沿横向和垂向分成多股、多层射流,进入消力池水体的中部。
    This module is designed as single width 6U VME module, consisting mainly three parts: interfacing with VME bus, input and output and FPGA which contains function circuit.
    该插件设计为单宽6U格式,由VME接口,FPGA部分和输入输出3部分构成。
    At the same time, we know that the distance and time of water flow advance of film hole irrigation accord with power function, t2=0.1564L1.2936.
    膜上灌水流推进距离与时间呈幂函数规律,即t_2=0.1564L~(1.2936); 膜上灌水流推进速度随单宽流量的增加而增加。
    The chief function of the CFCTL module produced by the author, which is a single width 6U standard VME module, a 4-layer PCB, has been realized mainly by means of a chip of FPGA which type is XC2S50-5-PQ208C.
    设计制作的CFCTL插件为4层的PCB电路板,是标准的VME单宽6U插件,其主要逻辑功能由一片型号为XC2S50-PQ208C的FPGA芯片实现。
    By testing, the author has verified the calculation methon method proposed in the article "The Spread of Rapid Flow on the Surface of the Circular Arc" and advanced the relations of the maximum discharge per meter on the end of the bucket with factors of φ, H/R, b/R, F.
    本文对"圆弧曲面上急流的扩散"一文中提出的计算方法进行了试验的验证,提出了在挑坎末端最大单宽流量值与φ、H/R、b/R、F的关系.
    In such cases, 90% of the total leakage will be collected by the drainage ditches; the amount of leakage per unit length will be 0.2-0.3 m3 /day-m in slightly leaked sections and 0.59-0.78 m3/day·m in seriously leaked sections.
    此时90%以上的渗流量被截入沟,弱渗流段单宽渗漏量为0.20—0.30米~3/日·米,强渗流段为0.59—0.78米~3/日·米。
    269. The direction of the sediment movement is 110°,the particle velocity is 758 m/d, and the sediment transport rate per unit width is 47. 8m3/md.
    据测量资料分析,在上口抛泥区投放的示踪沙最终沿着110°的运动方向以758m/d的运动速度,在269~#航标附近进入挖槽,单宽输沙率为47.8m~3/md。
    The result also shows thata limitation of increasing the roughness coefficient value exists by increasing the litter amount. Thetop limitation of the litter amotint is about 0.250~0. 300g /cm ̄2(equal 25~30t/hm ̄2)while the unitwidth flow is about 94ml(m.s).
    研究结果还表明枯落物量和枯草量的增加对糙率系数n值的增大有一定限度,当单宽流量q为94ml/(m.s)时,枯落物量的上限值约为0.250~0.300g/cm ̄2(相当于25~30t/hm ̄2)。
    The flow characteristics of bucket basin and scouring characteristics in small dam are discussed,and the impact of initial low spillway discharge on the downstream bed is studied.
    本文阐述了在低坝中应用消力戽宣泄单宽流量1~5.5m3/s·m时的下游水流流态演变规律及各种流态下的冲刷特性,并探讨了小流量初始泄流对下游河床的影响。
    The FDM(FERA bus Drive and Memory)module,which is a specially designed one single width CAMAC module for CVC(intelligent CAMAC controller with VME-Subsystem interface VSB),distributes the control signals to and collects the data from up to 22 ADC(These ADC must have FERA bus)modules automatically.
    FERA,总线驱动和存储器部件(FDM)是专为CVC而设计的单宽CAMAC插件。 FDM发送控制信号多达22个带有FERA总线功能的CAMACADC中,并自动将这些ADC的数据收集。
    The results of runoff scouring experiments show that the relationship between unit width runoff energy consumption and uint width sediment production is Dr=18.672 (ΔE-0.751). The parameter of soil anti-erodibility is 18.672 g/J and the critical energy consumption is 0.751 J/(ms).
    通过室内放水冲刷试验,结果表明,陡坡单宽径流能耗与单宽径流产沙率之间存在以下线性关系:Dr=18.672(ΔE - 0.751),说明土壤的可蚀性参数为18.672 g/J,发生坡面细沟侵蚀的临界径流能耗为0.751 J/(ms)。
    The Dachaoshan hydropower project has adopted the flaring pier stepped dam face and bucket combined energy dissipator in its design, and the prototype observation of overflowing hydraulics under the design water level was carried out in June, 2002. The streamwise pressure, bottom flow velocity and aeration over the 4 steps along the stepped dam face were measured, and the data on operations under a dam height of over 100m and a per unit width discharge of 165m3/s were obtained.
    大朝山水电站采用宽尾墩阶梯式坝面及戽式联合消能工的设计,于2002年6月进行了设计水位下的过流水力学原型观测,针对阶梯式坝面开展了沿程4个台阶上的压力、底流速和掺所的量测,取得了在100m级高坝、单宽流量165m3/s·m条件下的运行资料。
     In the experiments, all the borders studied had an approximately equal slope and constant length of 60 m, while the width of the border strips was varied from 1 to 4 m and the inflow rate was varied from 3.8 to 15.2 L/(s·m).
    试验中畦田坡度基本一致 ,畦长均为 60 m ,畦宽变化范围为 1~ 4m ,单宽流量为 3 .8~ 15 .2 L / ( s· m )。
    Under the same condition of irrigation-quota and the length of farmland, the velocity of watering under the single width-flow of 1.3L/s·m was 1.64 times on the farmland width of 1.25m film-plastic-covering and it could not destroy the border and the seedling.
    在灌溉定额和畦长相同的条件下,春小麦整个生育期内,单宽流量为 1.3L/(m·s),在膜宽为 1.25 m的畦田内水流推进速度是露地畦灌的 1.64 倍,并且不会发生冲苗冲埂现象。
    The optimization inflow rate of unit width and border length in the medium loam planted fruit tree at 1‰, 3‰ 5‰ border slope 6 L/(s·m)and 50 m, 6 L/(s·m)and 90 m, 5 L/(s·m)and 90 m.
    对中壤土果树地1‰、3‰、5‰坡度条件下的畦长和单宽流量组合为分别以50m和6.0L/(s·m)、90m和6.0L/(s·m)、90m和5.0L/(s·m)左右为宜。 同时为达到较高的灌水效率和灌水均匀度,畦田坡度不宜过大。
 

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