摘要
为了探究动水条件下鳃片间距对分离鳃水沙分离效率的影响,采取物理模型试验和数值模拟,开展了分离鳃和普通管的水沙分离试验。研究成果表明:当鳃片间距为30、40、50、80、110 mm时,分离鳃的水沙分离效率分别是普通管的1.70~3.76、1.71~3.75、1.71~3.76、1.38~2.63、1.25~2.13倍;不同鳃片间距下分离鳃水沙分离效率随时间的变化规律包含缓慢增加、急速增加及缓慢增加阶段,而普通管仅有缓慢增长阶段;当鳃片间距小于50 mm时,水沙分离效率随间距的减小变化不大;实际工程中综合考虑水沙分离效率和经济效益,取鳃片间距为50 mm时最为适宜,其水沙分离效率分别为80、110 mm的1.34~3.99、1.61~5.77倍,且最高可达35.12%。
In order to investigate the effect of the gill-piece spacing concentration on water-sediment separation efficiency in the gill-piece separation device(GPSD)under hydrodynamic water conditions,Physical model test method is applied to the water sediment separation efficiency test of gill-piece separation device(GPSD)and common pipe is carried out.The results show that:When the gill-piece spacing is 30,40,50,80 and 110 mm,the water sediment separation efficiency is as1.70~3.76,1.71~3.75,1.71~3.76,1.38~2.63,1.25~2.13 times as common pipe.The water-sediment separation efficiency with time in different gill-piece spacing includes the stages of slow increase,rapid increase and slow increase but ordinary tube only has slow growth stage.When the spacing of gill slice is less than 50 mm,the water and sand separation efficiency changes little with the decrease of the spacing,floating around 35%.Considering the water and sand separation efficiency and economic benefits in the actual project,it is most suitable to take the gill spacing of 50 mm,and the water and sand separation efficiency is 1.34~3.99,1.61~5.77 times of 80,110 mm,and up to 35.12%.
作者
宋睿明
陶洪飞
马合木江·艾合买提
李巧
杨文新
姜有为
张继领
SONG Rui-ming;TAO Hong-fei;MAHEMUJIANG·Aihemaiti;LI Qiao;YANG Wen-xin;ZHANG Ji-ling(College of Water Conservancy and Civil Engineering,Xinjiang Agricultural University, Urumqi 830052,China)
出处
《中国农村水利水电》
北大核心
2020年第12期51-56,共6页
China Rural Water and Hydropower
基金
新疆维吾尔自治区创新环境(人才、基地)建设专项-自然科学基金项目(2017D01B18)
新疆维吾尔自治区高校科研计划面上项目(XJEDU2017M011)
新疆维吾尔自治区高校科研计划创新团队项目(XJEDU2017T004)。
关键词
分离鳃
普通管
鳃片间距
水沙分离效率
gill-piece separation device
ordinary tubes
gill-piece spacing
water sediment separation efficiency
