斜槛群不同透水率及不同高度对弯道水流的影响  

The Influence of Different Water Permeabilities and Heights of Inclined Sill Group on Flow in Bend

作　　者：张峻博 张英超 张靖[2] 王文康 滕晓敏 ZHANG Jun-bo;ZHANG Ying-chao;ZHANG Jing;WANG Wen-kang;TENG Xiao-min(College of Civil Engineering/Tongji University,Shanghai 200092,China;College of Water Conservancy and Civil Engineering/Shandong Agricultural University,Tai’an 271018,China)

机构地区：[1]同济大学土木工程学院,上海200092 [2]山东农业大学水利土木工程学院,山东泰安271018

出　　处：《山东农业大学学报（自然科学版）》2021年第1期54-62,共9页Journal of Shandong Agricultural University：Natural Science Edition

基　　金：山东省自然科学基金青年基金(ZR2020QE286);天津大学水利工程仿真与安全国家重点实验室开放基金(HESS-2008)。

摘　　要：为了研究不同透水率斜槛群对弯道水流特性的影响,本文进行了物理模型试验。通过试验所得数据,计算了最大横向水面差及相对最大横向水面差、水面差平均值、水面均匀度等水力学指标并进行了分析。结果表明:斜槛群的透水率越小,对弯道水流的改善效果越好;在正弦式斜槛群中,从最大横向水面差、水面差平均值、水面均匀度来看,斜槛的高度越高,改善弯道水流的效果越好。在余弦式斜槛群中,从最大横向水面差、水面差平均值、水面均匀度来看,斜槛过低过高对改善弯道水流的效果都不好。In order to study the influence of the inclined sill group with different permeability combinations on the flow characteristics of the bend,a series of physical model tests were carried out in this paper.Based on the experimental data,the hydraulic indexes such as the maximum transverse water surface difference and the average water surface difference relative to the maximum transverse water surface difference were calculated and analyzed.The results show that the smaller the permeability of the inclined sill group is,the better the improvement effect of the water flow in the bend is.In sinusoidal sill group,the higher the height of the inclined sill is,the better the effect of improving the water flow in the curve will be from the perspective of the maximum horizontal water surface difference and average water surface difference.In cosine sill group,from the point of view of the maximum transverse water surface difference and the average water surface evenness of the water surface difference,too low and too high sill is not good for improving the water flow in curves.

关 键 词：斜槛群 透水率 高度 影响 

分 类 号：TV135[水利工程—水力学及河流动力学]