For the low water head water control project at a branching channel , its flood discharge capacity is related not only with the total discharge width but also with the discharge width ratio of the two branches 摘要位于分汊河段的低水头枢纽，其泄洪能力不仅与枢纽的总泄流宽度有关，而且与两汊泄流宽度之比有关。
On the heavy silt - laden rivers , desilting at the water intake of hydropower station is a problem widely concerned not only for the large reservoir with high dam and high water head , but also for the runoff river hydropower station with lower water head 摘要在多沙河流上，无论是高坝大库的高水头电站，还是低水头河床式枢纽，电站进水口的取水排沙历来是一个倍受关注的问题。
This paper studies the influence of different riverside shape on the flow condition of low - head hydraulic lock ' s outlet area through mathematical computation and examples of project , and finds out the riverside shape which is the most advantageous one 摘要通过概化模型计算并结合工程实例分析，研究了凹形和凸形河岸对低水头枢纽船闸口门区水流条件的影响，指出了对低水头枢纽船闸口门区通航水流条件相对有利的河岸形态。
The axial flow type turbines are available for hydrauric power resources of medium and low heads . ganfa manufactures both the propeller type fixed blade type and the kaplan type adjustable blade type turbines . the propeller type turbines are suitable for hydropower stations with small or medium capacities and heads , and relatively stable loads . the kaplan turbines are suitable for hydropower stations with medium or large capacities and heads , and relatively unstable loads 轴流式水轮机适应于开发中低水头水力资源。我公司生产的轴流式水轮机按转轮结构分为定桨zd转桨zz两种，定桨式一般适用于中小容量及水头负荷变化较小的的水电站转桨式多用于大中型电站及水头负荷变化较大的水电站。
Under subsurface drip irrigation , soil wetted front movement when higher soil initial moisture content was quicker than that of when it is lower , so did the supplied water pressure and soil bulk density . the wetted front movement of clay loam was clearly slow than that of sandy soil , especially in the larger soil bulk density 地下滴灌条件下，初始含水量较高的土柱，湿润锋运移速度快于含水量较低的；在较高的供水压力条件下，各个方向的湿润锋运移都比低水头情况下的快；容重越大的土柱湿润锋运移速度越缓慢。
The projects on the downstream of river are increasing recently . the common features of these projects are low head , low frounde number , large discharge ect . the roller bucket with low - ridge is applicated on the project for energy dissipation in the condition of low fr current and low head 目前修建在河流中下游的水利枢纽工程日益增多，此类河流的泄洪消能有共同特点，即低水头、单宽流量大，考虑上游淹没、移民、河道两侧的交通等问题，不宜抬高河道水位，往往采用低堰泄流。
The axial - flow turbine generator set is suitable for low head from 2m to 70 . its feature is that the water flow passes through the runner axially . the axialflow turbine generator set can be classified into two forms according to the runner construction : one is fixed blades propeller for small variation of head and power , the other is movable blades kaplan for large variation of head and power 贯流式水轮发电机组是低水头大流量电站的较好机型，一般适用于水头2 ~ 15米，其特点是水流从进水口到尾水出口都是轴向的，流道基本上成直线，因而贯流式水轮发电机组具有水流特性好，效率较高等特点。
