直立式溢流连拱坝综合流量系数试验研究
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摘要
为了探讨溢流连拱坝的过流能力,以坝高和连拱坝拱数为参数,进行了5个拱数、3个坝高共15个方案的直立式连拱坝水工模型试验。结果表明:连拱坝的综合流量系数与连拱坝顶水深H、堰高P、连拱坝展长L、单拱宽w等因素有关。在河道宽度一定的条件下,连拱坝综合流量系数随流量的增大呈减小趋势,随拱数、H/P的增大而减小;连拱坝高度一定的情况下其随展高比L/P、宽高比w/P的增大而增大。利用试验数据,通过回归分析得到了考虑H/P、w/P、L/P等因素的连拱坝综合流量系数计算公式。
In order to explore the overflow capacity of vertical overflow multi-arch dam,fifteen schemes covering five schemes of dam shapes,three heights of dam,and twelve groups of different flow discharge were carried out by model test. The results show that the aggregate discharge coefficient of multi-arch dam is influenced by water height on the crest( H),height of dam( P),developed length( L) and width of the individual arch( w). Under the condition of channel width,the compositive parameter of discharge coefficient of multi-arch dam decreases with the increasing of flow discharge,and decreases with the increasing of H/P,under the condition of dam height,the compositive parameter of discharge coefficient increase with the increasing of L/P and w/P. Based on the experimental data,the formula for compositive parameter of discharge coefficient of the multi-arch dam is obtained by regression analysis,which considered the factors of H/P,w/P and L/P.
In order to explore the overflow capacity of vertical overflow multi-arch dam,fifteen schemes covering five schemes of dam shapes,three heights of dam,and twelve groups of different flow discharge were carried out by model test. The results show that the aggregate discharge coefficient of multi-arch dam is influenced by water height on the crest( H),height of dam( P),developed length( L) and width of the individual arch( w). Under the condition of channel width,the compositive parameter of discharge coefficient of multi-arch dam decreases with the increasing of flow discharge,and decreases with the increasing of H/P,under the condition of dam height,the compositive parameter of discharge coefficient increase with the increasing of L/P and w/P. Based on the experimental data,the formula for compositive parameter of discharge coefficient of the multi-arch dam is obtained by regression analysis,which considered the factors of H/P,w/P and L/P.
引文
[1]彭儒武,李保栋,王青.矩形薄壁堰贴壁堰流试验研究[J].山东农业大学学报(自然科学版),2002(2):197-202.
[2]吴持恭.水力学[M].北京:高等教育出版社,2008:295-315.
[3]徐正凡.水力学(下)[M].北京:高等教育出版社,1987:148-149.
[4]夏毓常.水工水力学原型观测与模型试验[M].北京:中国电力出版社,1999:12.
[5]HAY N,TAYLOR G.Performance and Design of Labyrinth Weirs[J].Journal of the Hydraulic Division,1970,96(11):2337-2357.
[6]DARVAS L A.Performance and Design of Labyrinth WeirsDiscussion[J].Journal of the Hydraulic Division,1971,97(8):1246-1251.
[7]王仕筠,舒以安.迷宫堰水力设计方法的修正[J].江西水利科技,1989,15(2):36-46.
[8]马法三.迷宫堰研究成果综述[J].河海科技进展,1994,14(1):31-41.
[9]王仕筠.斜交堰的水力特性[J].江西水利科技,1997,23(1):30-33.
[10]NGUYEN B T.Flow over Oblique Weirs[D].Delft:Delft University of Technology,2006:10.
[11]卢泰山,王国杰.梯形明渠驼峰堰泄流能力试验研究[J].人民长江,2011,42(9):87-89.
[12]曾甄,张志军.迷宫堰流量系数的探讨[J].中国农村水利水电,2005(4):49-52.
[13]张丰丽,王正中,王必华,等.梯形迷宫堰数值模拟及体型优化设计[J].人民黄河,2016,38(5):95-99.
[14]SAMUEL E T.Discharge Coefficient of Oblique Weirs[D].Logan:Utah State University,2011:8.
[15]于雪梅,常俊德,于雪枫,等.齿型堰水力学问题的试验研究与应用[J].中国农村水利水电,2010(4):88-90.
[16]黄修筠,拾兵,刘文沛.曲线堰水力学特性的物理模型试验研究[J].中国水运,2016,16(6):189-194.
[17]唐新军,杨京,李晓庆,等.翼形堰应用于过水土石坝控制堰的试验研究[J].人民黄河,2007,29(11):75-77.
[18]单长河.短喉堰自由出流流量系数试验研究[J].人民黄河,2014,36(8):101-105.
[19]商艾华,郭维东,孟繁星,等.复合堰流量计算[J].人民长江,2007,38(4):136-137.
[2]吴持恭.水力学[M].北京:高等教育出版社,2008:295-315.
[3]徐正凡.水力学(下)[M].北京:高等教育出版社,1987:148-149.
[4]夏毓常.水工水力学原型观测与模型试验[M].北京:中国电力出版社,1999:12.
[5]HAY N,TAYLOR G.Performance and Design of Labyrinth Weirs[J].Journal of the Hydraulic Division,1970,96(11):2337-2357.
[6]DARVAS L A.Performance and Design of Labyrinth WeirsDiscussion[J].Journal of the Hydraulic Division,1971,97(8):1246-1251.
[7]王仕筠,舒以安.迷宫堰水力设计方法的修正[J].江西水利科技,1989,15(2):36-46.
[8]马法三.迷宫堰研究成果综述[J].河海科技进展,1994,14(1):31-41.
[9]王仕筠.斜交堰的水力特性[J].江西水利科技,1997,23(1):30-33.
[10]NGUYEN B T.Flow over Oblique Weirs[D].Delft:Delft University of Technology,2006:10.
[11]卢泰山,王国杰.梯形明渠驼峰堰泄流能力试验研究[J].人民长江,2011,42(9):87-89.
[12]曾甄,张志军.迷宫堰流量系数的探讨[J].中国农村水利水电,2005(4):49-52.
[13]张丰丽,王正中,王必华,等.梯形迷宫堰数值模拟及体型优化设计[J].人民黄河,2016,38(5):95-99.
[14]SAMUEL E T.Discharge Coefficient of Oblique Weirs[D].Logan:Utah State University,2011:8.
[15]于雪梅,常俊德,于雪枫,等.齿型堰水力学问题的试验研究与应用[J].中国农村水利水电,2010(4):88-90.
[16]黄修筠,拾兵,刘文沛.曲线堰水力学特性的物理模型试验研究[J].中国水运,2016,16(6):189-194.
[17]唐新军,杨京,李晓庆,等.翼形堰应用于过水土石坝控制堰的试验研究[J].人民黄河,2007,29(11):75-77.
[18]单长河.短喉堰自由出流流量系数试验研究[J].人民黄河,2014,36(8):101-105.
[19]商艾华,郭维东,孟繁星,等.复合堰流量计算[J].人民长江,2007,38(4):136-137.