海漫柔性加糙相对糙率的确定  

STUDY ON DETERMINING RELATIVE ROUGHNESS OF ROUGHENED FLEXIBLE RUBBERS OF APRON

作　　者：李鹏飞[1] 文恒[2] 杨建雄 

机构地区：[1]河北省廊坊市水务局南水北调办公室,廊坊065000 [2]内蒙古农业大学水利与土木建筑工程学院,呼和浩特010019 [3]内蒙古呼和浩特市园林管理局,呼和浩特010010

出　　处：《内蒙古农业大学学报（自然科学版）》2005年第2期65-69,共5页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50169001)

摘　　要：文恒教授等研究发现,利用废旧轮胎对海漫进行柔性加糙,可充分调整海漫下游流速分布,降低近底流速,对于解决闸下冲刷破坏,效果非常显著[1,4]。本文延续海漫加糙试验研究,采用弹性较好的环状橡胶圈模拟废旧轮胎,在实验室人工水槽中进一步做海漫柔性加糙试验研究。试验共设计21个加糙方案形式,采集加糙前后不同断面水流流速分布和水位状况,确定在不同相对粗糙度情况下,加糙体的数量、尺寸、布置形式对加糙后海漫糙率的影响,以及合理的糙体排部和间距等。Professor Wen Heng and his students found that velocity of bottom of water is too much, and found that roughened apron by waste tires can adjust velocity and low velocity of bottom of water. This method can cope with the problem and the effect is significant. 21 kinds of roughness increasing and place condition of water on different cross section were designed. The aim was to fully understand the artificial roughness rubbers number, size/dimensions and assign form in different roughness relative, and the effect of it on the apron roughness and velocity of the bottom of water, and then found the potimum scheme of artificial roughness rubber＇s form and dimensions, which could be used in practice.

关 键 词：海漫 环状橡胶圈 相对粗糙度 近底流速 糙率 投影面积 

分 类 号：TV131.2[水利工程—水力学及河流动力学]