不同水力要素对人工渠道糙率影响的主次关系
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摘要
对于不同粗糙壁面的人工渠道中的均匀流,选取弗劳德数Fr、底坡比降i、雷诺数Re、流量Q、渠道平均水深h为参数,通过水力模型试验,确定这些因素对糙率系数的影响程度,分析各要素间的主次关系及相关关系。结果表明:对糙率影响较大的水力要素排序依次为弗劳德数Fr、渠道平均水深h和底坡比降i,糙率与流量、雷诺数无关。
For uniform flow in artificial channels with different rough walls,the Froude number Fr,bottom slope ratio i,Reynolds number Re,discharge Q and channel mean water depth h were used as parameters. Through hydraulic model tests,the influence of these factors to the coefficient of roughness was determined and the primary and secondary relationships and related relationships among various factors were analyzed. The results show that the ranking of the hydraulic elements that have a greater influence on the roughness is the Froude number Fr,the channel average depth h and the bottom slope ratio i and the roughness has no relationship with discharge and Reynolds number.
For uniform flow in artificial channels with different rough walls,the Froude number Fr,bottom slope ratio i,Reynolds number Re,discharge Q and channel mean water depth h were used as parameters. Through hydraulic model tests,the influence of these factors to the coefficient of roughness was determined and the primary and secondary relationships and related relationships among various factors were analyzed. The results show that the ranking of the hydraulic elements that have a greater influence on the roughness is the Froude number Fr,the channel average depth h and the bottom slope ratio i and the roughness has no relationship with discharge and Reynolds number.
引文
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[13]杨岑,路泽生,栾维功,等.矩形渠道人工加糙壁面阻力规律试验研究[J].长江科学院院报,2011,28(1):34-38.
[14]路明,霍自民,范志高,等.人工加糙对明渠紊动特性影响的试验研究[J].水利水电技术,2008,39(9):44-46.
[15]陈耀忠.引滦入津隧洞糙率两次原型观测综述[J].水利水电科技进展,2005,25(2):58-61.
[16]史明礼,苏娅,乔丛林,等.山区河道糙率变化规律浅析[J].水文,2000,20(2):19-22.
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[19]王玉荣.统计数据分析软件教程[M].北京:对外经济贸易大学出版社,2008:150-200.
[20]孙逸敏.利用SPSS软件分析变量间的相关性[J].新疆教育学院院报,2007,23(2):120-123.
[2]吕宏兴,路泽生,栾维功,等.引洮供水一期工程总干渠糙率原型观测[J].长江科学院院报,2010,27(2):37-41.
[3] SIMONS D B,AL-SHAIKH-ALI K S,LI R. Flow Resistance in Cobble and Boulder Riverbeds[C]. Journal of the Hydraulics Division,Proceedings of ASCE,1979,105(9):477-487.
[4] MYERS W R C. Flow Resistance in Wide Rectangular Channels[J]. Journal of the Hydraulics Division,Proceedings of ASCE,1982,108:471-482.
[5] PMICHAEL De Pue,TA WEI Soong. The Effects of Water Surface Profiles on Manning’s Roughness Coefficient[R].North American Water and Environment Congress,ASCE,1996:3639-3644.
[6]张靖,拾兵,薛旖云.糙率变化对明渠水深影响的探讨[J].人民黄河,2012,34(9):121-123.
[7]步丰湖,张红岐,王庆文,等.衬砌渠道糙率取值方法的研究[J].内蒙古水利,2007(4):144-146.
[8]张小琴,包为民,梁文清,等.河道糙率研究进展[J].水力发电,2008,34(6):98-100.
[9]程进豪,安连华,王华,等.黄河山东段河床糙率分析[J].水利学报,1997,28(1):39-43.
[10]赵锦程,邱秀云,杜利霞,等.底坡比降对人工渠道糙率影响的试验[J].水利水电科技进展,2013,33(6):48-51.
[11]拜亚茹,赵锦程,邱秀云,等.人工渠道糙率系数影响因素的试验研究[J].水资源与水工程学报,2014,25(4):229-232.
[12]马吉明,史哲.南水北调典型宽浅渠道糙率系数研究[J].水力发电学报,2007,26(5):75-79.
[13]杨岑,路泽生,栾维功,等.矩形渠道人工加糙壁面阻力规律试验研究[J].长江科学院院报,2011,28(1):34-38.
[14]路明,霍自民,范志高,等.人工加糙对明渠紊动特性影响的试验研究[J].水利水电技术,2008,39(9):44-46.
[15]陈耀忠.引滦入津隧洞糙率两次原型观测综述[J].水利水电科技进展,2005,25(2):58-61.
[16]史明礼,苏娅,乔丛林,等.山区河道糙率变化规律浅析[J].水文,2000,20(2):19-22.
[17]侯海桂.关于统计分析内容分类以及相关SPSS分析方法使用的探讨[J].经济师,2014(5):72-75.
[18]何晓群.现代统计分析方法与应用[M].北京:中国人民大学出版社,2008:373-380.
[19]王玉荣.统计数据分析软件教程[M].北京:对外经济贸易大学出版社,2008:150-200.
[20]孙逸敏.利用SPSS软件分析变量间的相关性[J].新疆教育学院院报,2007,23(2):120-123.