摘要
针对大库盘水库断面多为宽U或复合式阶梯型、库面宽阔且横向泥沙淤积严重的情况,设计了自压式管道排沙系统,系统采用管道网络铺设于水库底部,利用水库落差将库内泥沙排出。通过对自压管道排沙的试验研究,分析了流速与水沙质量比之间的关系,确定了系统的经济流速为5-6 m/s,给出了水头与流速关系式。试验结果表明,自压式管道排沙系统具有排沙多、耗水少及耗能低的优点。
The cross sections of reservoir with large bottom area are mostly the U-type or ladder-type with a broad surface.The horizontal sedimentation is serious.A self-pressure pipe desilting system was designed with a pipeline network laid on the bottom of the reservoir for sediment discharge.The water and sediment mass ratio and the economic flow of the system were determined by experiments,and the relationship of water head and flow is given.The most economic flow is 5-6 m/s.The system has the advantage of flushing more sedimentation with less water and energy consumption.
出处
《水力发电》
北大核心
2010年第4期92-94,共3页
Water Power
基金
国家自然科学基金资助课题(50969010)
新疆水利水电重点科学基金资助项目(xjzdxk-2002-10-05)
关键词
自压式管道排沙系统
水沙质量比
经济流速
大库盘水库
self-pressure pipe desilting system
water and sediment mass ratio
economic flow
reservoir with large bottom area
