定床模型糙率模拟试验研究  

Roughness Simulated Method for Fixed-Bed Model Trial Test

作　　者：侯志军[1] 侯佼建 孙一[1] 

机构地区：[1]黄河水利科学研究院,河南郑州450003 [2]中国地质大学地球与空间信息学院,湖北武汉430074

出　　处：《人民黄河》2014年第2期13-15,共3页Yellow River

基　　金：黄河水利科学研究院基本科研业务费专项(HKY-JBYW-2013-24)

摘　　要：通过变坡水槽试验,取得了18组定床模型梅花形加糙试验的数据,分析给出了定床模型设计糙率的加糙方法。模型中在糙率要求较大的部位可采用梅花形排列法加糙,在模型水深较浅的滩面及工程局部可采用密排平铺法加糙。结果表明,这种加糙方法可较好地模拟定床河工模型的设计糙率。Through the alteration slop water channel test, eighteen group test data of plum blossom type were gained. Through system analysis, roughness simulated method for fixed-bed model was gained. In fixed-bed model, the area of designing more roughness should be adopted by using plum blossom. In area of flxed-bed shallow model water depth and project location, the roughness simulated method should he adopted close range. The results show that this roughness simulated method can nicely simulate the roughness design of fix-bed model.

关 键 词：当量线糙率 阻力系数 梅花形加糙法 床面糙率 定床模型 

分 类 号：TV143[水利工程—水力学及河流动力学] TV131.61