大库盘水库自压式管道排沙的试验研究  

Experimental Study on Self-pressure Pipe Desilting of Reservoir with Large Bottom Area

作　　者：张莉[1] 夏新利 陈成林[1] 侍克斌[1] 

机构地区：[1]新疆农业大学水利与土木工程学院,新疆乌鲁木齐830052 [2]新疆克孜尔水库管理局,新疆阿克苏842313

出　　处：《水力发电》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)

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.

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 

分 类 号：TV145[水利工程—水力学及河流动力学]