虹吸排水抗淤堵能力模型试验与理论分析  

Model test and theoretical analysis of anti clogging capacity of siphon drainage

作　　者：汪磊 尚岳全[1] 吕俊俊 徐浩迪 WANG Lei;SHANG Yuequan;Lü Junjun;XU Haodi(College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China)

机构地区：[1]浙江大学建筑工程学院,浙江杭州310058

出　　处：《中南大学学报（自然科学版）》2019年第2期384-389,共6页Journal of Central South University:Science and Technology

基　　金：国家自然科学基金资助项目(41772276);浙江省重点研发计划项目(2017C03006)~~

摘　　要：针对不同虹吸管布置方式和不同虹吸扬程高度,模拟不同粒径砂粒在虹吸管中的流动特性及其对虹吸过程的影响,并通过理论分析加以验证。研究结果表明:粒径小于1.00 mm的砂粒均会在虹吸作用过程中被水流带出,不发生孔底泥沙淤积或堵塞虹吸管,虹吸排水过程具有抗淤堵能力;在虹吸过程中,管内水流速度大于砂粒的下沉速度,证明砂粒进入虹吸管能够随水流流动。For different siphon arrangement and different siphon lift,flow simulation of sand particles with different sizes was conducted.The influence of sand particles on the siphon process was studied,and was then verified by theoretical analysis.The results show that sand particles smaller than 1.00 mm in diameter are brought out of the water under the action of siphon,with no hole bottom sediment or blockage of the pipe.It is thus proved that siphon drainage has the ability of anti-clogging.The water velocity in the pipe is larger than the sand velocity during the siphon process,which indicates that sand particles can enter the siphon and flow with the water.

关 键 词：边坡 虹吸排水 抗淤堵能力 临界扬程 模型试验 

分 类 号：TU43[建筑科学—岩土工程]