掺气水深计算公式在陡坡泄槽设计中的应用  

Application of Calculation Formulae for Aerated Water Depth in the Design of Steep Chute

作　　者：贾鸿益 罗孝明 平有洪 肖群香 

机构地区：[1]中国水电顾问集团昆明勘测设计研究院有限公司,云南昆明650051

出　　处：《水电与新能源》2014年第5期40-42,共3页Hydropower and New Energy

摘　　要：高落差、陡坡泄槽水流流速较高,易形成自掺气水流,水深加大。如果对掺气水深估计不足,泄槽边墙高度不够,将会威胁建筑物的安全。利用某渣场排水系统泄槽沿程掺气水深的计算分析,比较了常用的几种掺气水深计算方法,并与模型试验成果对比。本例中王俊勇公式与模型试验成果接近,泄槽完建后运行良好。In steep chute with a great fall , the water flow velocity is usually high and self -aerated flow tends to occur . The water depth in the chute will increase accordingly .If the side wall is not high enough because of the underestimation of the aerated water depth , safety of the structures will be threatened .In this paper , several calculation formulae for aer-ated water depth that are commonly used are compared with a chute example in the drainage system of a residue field . Model test results are also given and serve as the benchmark .It shows that the calculation result from Wang Junyong for-mula is close to the test results .The chute is then built following the results and a good performance is shown .

关 键 词：掺气水深 泄槽 渣场 

分 类 号：TV131.34[水利工程—水力学及河流动力学] TV135.2