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1.The sediment model tests for the desilting bottom intakes of two hydropower stations are introduced herein, in which a new combined type of "grid desilting gallery+desilting bottom intake" (grid desilting bottom intake) is put forward.
文中介绍了2个电站进水口排沙底孔的泥沙模型试验情况,提出了一种新的“格栅式排沙廊道+排沙底孔”的组合型式(简称格栅式排沙底孔),取得了理想的排沙效果,较好地解决了工程实际问题。收藏指正
2.Desilting Application by Eddy Current in Baiyang River Hydropower Station, Fukang
涡环流排沙在阜康白杨河电站中的应用收藏指正
3.Investigation on Desilting dams Destroyed by Rain Storm on July 22 1989 in Xingxian County
兴县淤地坝“89722″暴雨水毁情况调查收藏指正
4.The paper also provides structural drawings of the desilting basin and the storage tank with volume of 147m^3.
文中提出了一个容积为147立方公尺的窑窖和沉沙池结构设计图。收藏指正
5.Water supply, drainage, river regulation and desilting in hydraulic engineering;Management stratagy consultation of water resources and flood prevention.
供排水工程、河道整治工程和水利工程防淤减淤咨询、水环境和防洪信息管理决策咨询。收藏指正
6.On the basis of general introduction of the All-American Canal System and the All-American Canal Irrigation District, the facilities (dams, desilting works, irrigation canal system), project management and maintenance, and benefits of All-American Canal System were de scribed and analyzed in detail.
摘要在介绍全美灌溉系统及全美渠灌区基本概况的基础上,对全美灌溉系统的主要建筑物(水库大坝、沉沙工程、灌溉渠系)、工程管理与维护以及工程所带来的经济效益等方面作了详细阐述与分析。收藏指正
7.Thermal-plastic rubber of PU material is adopted as the surface material, which could be used within the scope of -70℃ and +150℃, and is featured by non-skid, waterproof, desilting, and snow removal etc., and thus could ensures clean indoor environment.
面料采用热塑性橡胶PU材质,可在-70°至+150°范围内方可使用,具有防滑、防水、除泥、除雪等性能,从而保证了室内环境清洁。收藏指正
8.Complicated hydrologic and geographic conditions,and the large scale of the Xiaolangdi Hydraulic Project on the Yellow River are introduced briefly.Three desilting tunnels are designed to meet the requirements of flood control,sediment discharge and runoff regulation.According to the performance requirements of desilting tunnels,the tunnel lining down-stream of the grouting curtain is designed to be post-tensional prestressed lining.On the basis of investigation and research,experiements and analysis,the unbonded prestressing system is used.It is the largest unbonded prestressed tunnel lining project in the world,and the first one in China.
简介黄河小浪底水利枢纽复杂的水文、地质条件以及庞大的工程规模.该枢纽设计有3条排沙洞,担负着泄洪、排沙、调节径流和保证进水口不被泥沙淤堵的任务.根据排沙洞的水库运用要求,灌浆帷幕下游排沙洞洞身段设计为混凝土后张预应力隧洞.通过大量的调研、试验、分析论证,在施工前确定该预应力方案选用无粘结预应力系统,成为目前世界上规模最大的无粘结预应力隧洞衬砌工程,在国内尚属首例.收藏指正
9.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。收藏指正
10.Abstract: Based on studies on the mechanism of sediment trapping by the vortex tube and flume and model experiments,three parameters are proposed:the diversion ratio,the trapping efficiency and the sediment carrying capacity of the vortex tube.These parameters reflect the economic index of water consumption and the effectiveness of silt trapping of the vortex tube.Besides,the relations of the angle of the tube axis to flow direction in the channel,the Froude number of flow in the channel,the vortex tube slot width and so on with the trapping effectiveness are studied respectively.On the basis of theoretical study of sorted settling of the suspended load,a method is suggested to calculate desilting and trapping of the suspended load,which has been used in the design of a desilting basin of a water power project.A hydro-electric project according to this design thought has been constructed already and has worked well for two flood seasons.
文摘:通过对涡管排推移质泥沙机理的分析及试验研究,提出涡管排沙的三个参数:涡管分流比、截沙率及挟沙能力.对涡管与渠道水流方向的夹角、渠中水流的佛劳德数及涡管开口宽度等参数与排沙效率的关系也分别进行了研究.通过对悬移质分选沉降的理论研究,提出了悬移质涡管排沙的计算方法,该方法已成功地应用于沙湾县金沟河渠首水电站沉沙池的设计上.文中还提出了涡管排沙技术有待研究的问题.收藏指正
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