| 翟东汉,何武全,赖红兵,娄宗科,霍轶珍.模袋混凝土复合断面衬砌渠道糙率系数原型观测试验研究[J].干旱地区农业研究,2019,37(5):33~39 |
| 模袋混凝土复合断面衬砌渠道糙率系数原型观测试验研究 |
| Prototype observation study on roughness coefficient of bag concrete composite section lining channel |
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| DOI：10.7606/j.issn.1000-7601.2019.05.06 |
| 中文关键词: 模袋混凝土 复合断面衬砌渠道 糙率系数 原型观测 误差分析 |
| 英文关键词:mold bag concrete composite section lining channel roughness coefficient prototype observation error analysis |
| 基金项目:国家“十三五”重点研发课题（2016YFC0400203）；内蒙古自治区高等学校创新团队发展计划（NMGIRT-B1611）；内蒙古自治区水利厅项目（NSK2017-N3） |
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| 中文摘要: |
| 为了确定模袋混凝土护坡、砂砾石护底的复合断面衬砌渠道的糙率系数，本文在内蒙河套灌区什巴分干渠（0+200~2+216）和建设二分干渠（1+910~3+040）开展了模袋混凝土复合断面衬砌渠道的原型观测试验研究，得出了不同水深和流量条件下的渠道糙率系数，并建立了渠道观测断面水力测量误差与糙率系数计算误差之间的函数关系，计算分析了什巴分干渠和建设二分干渠糙率系数观测试验的测定误差。试验得出：什巴分干渠原型观测的糙率系数最小值为0.025 1，最大值为0.026 7，平均值为0.025 9；建设二分干渠原型观测的糙率系数最小值为0.0264，最大值为0.0279，平均值为0.0272；什巴分干渠原型观测的糙率系数测定最大误差为5.037%，建设二分干渠原型观测的糙率系数测定最大误差为4.305%。模袋混凝土复合断面衬砌渠道糙率系数范围为0.0251～0.0279，平均值为0.0265，原型观测糙率系数测定的最大误差为5.037%。 |
| 英文摘要: |
| In order to determine the roughness coefficient of the composite section channel of the concrete bag slope protection and sand gravel bottom protection, in this paper Shiba sub-channel （0+200~2+216）and Jianshe sub-channel (9+903) of Hetao irrigation area were selected to conduct the prototype observation experimental research of roughness coefficient of formed concrete composite section lining channel. The channel roughness coefficient under different water depths and flow rates were obtained. And the function relationship between the cross section hydraulic measurement error and the roughness calculation error were established. The results showed that, the minimum roughness coefficient of Shiba sub-channel prototype observation was 0.025 1，the maximum value was 0.0267 and the average value was 0.0259； the minimum roughness coefficient of Jianshe sub-channel prototype observation was 0.026 4，the maximum value was 0.0279 and the average value was 0.0272. The maximum roughness coefficient error of Shiba sub-channel prototype observation was 5.037% and the maximum roughness coefficient error of Jianshe sub-channel prototype observation was 4.305%. The range of roughness coefficient of bagged concrete full cross section lining channel was 0.0251~0.0279，the average value was 0.0265 and the maximum roughness coefficient error was 5.037%. |
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