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Simplified Calculation Method of Critical Water Depth on the U-shaped Tunnel Water Passing Cross-section
Author(s): 
Pages: 7-11
Year: Issue:  8
Journal: Rural Hydropower & Electrification in China

Keyword:  马蹄形隧洞过水断面 临界水深 优化拟合 简化计算;
Abstract: 针对马蹄形隧洞过水断面临界水深计算方法比较繁琐等问题,依据优化拟合原理,以标准剩余差最小为目标函数,在工程适用参数范围内进行逼近拟合,提出一种简化计算方法。该方法近似公式的表达形式更加简单直观,不必分段和进行判别选取,实际计算仅借助计算器即可快速完成。算例分析及精度比较表明,该简化计算方法的拟合替代精度高于有关文献,最大拟合相对误差仅为0.58%,且拟合相对误差小于0.5%的点占总计算点数的95%以上,可以满足实际工程的设计精度要求。
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