L形溢流堰侧槽溢洪道水力设计与试验研究

Hydraulic Design and Model Tests on Side Channel Spillway of L Style Weirs

为给工程提供优化的设计方案，对L形溢流堰侧槽溢洪道进行水力设计及水工模型试验。该文结合某水库除险加固设计中L形堰侧槽溢洪道水工模型试验成果，对L形堰侧槽溢洪道的泄流能力、水面线推求方法进行了计算，并进行对比分析。结果表明，L形溢流堰泄流能力，低水位时计算值较水工模型试验值偏小5％-10％，高水位时与试验结果基本一致；槽首淹没度计算值较模型试验值高18％左右，槽首淹没度为0．7左右时泄流能力与自由出流时的泄流能力相差不大，下游淹没度计算值与试验结果基本一致。水工模型试验与水力设计的对比分析，可为工程提供最佳的设计方案。

The characters of the side channel spillway of L style weirs are introduced here. Based on the results of hydraulic model tests during the design for reinforcement of a reservoir, the discharge capacities and water surface profiles of the side channel spillway of L style weirs are calculated. By comparing and analyzing the results of calculation and tests, the optimized design methods are presented at last.