低水头拦河闸下游一、二级消力池的布置.pdf

第33卷第6期 水 利 水 电科 技 进 展 2013年11月 Vol.33 No.6 Advances in Science and Technology of Water Resources Nov. 2013 DOI:10.3880/ j.issn.1006 7647.2013.06.006 低水头拦河闸下游一、二级消力池的布置 黄智敏,陈卓英,朱红华,钟勇明 (广东省水利水电科学研究院广东省水动力学应用研究重点实验室,广东 广州摇 510635) 摘要:为了解决低水头拦河闸下游河床下切、河道水位下降造成下游消能工无法正常运行的问题, 需要对拦河闸工程下游消能工进行除险改造或重建。 基于广东省3座拦河闸除险改造和重建工程 的水力模型试验研究成果,对低水头拦河闸下游两级消力池的布置进行研究,提出加高一级消力池 尾坎顶及在下游陡坡段设置外凸型阶梯跌坎等优化措施。 试验结果表明,采取上述措施可大幅度 提高消力池水流消能率,简化消能工设施,节省工程投资。 关键词:低水头拦河闸;消力池;阶梯消能工;尾坎 中图分类号:TV6 + 53 .1;TV66摇 摇 摇 文献标志码:A摇 摇 文章编号:1006 7647(2013)06 0033 04 Layout of primary and secondary stilling basin downstream low head barrage/ / HUANG Zhimin,CHEN Zhuoying, ZHU Honghua,ZHONG Yongming(Guangdong Provincial Key Laboratory of Hydrodynamics,Guangdong Research Institute of WaterResources and Hydropower,Guangzhou510635,China) Abstract:Because of the downstream river water鄄level degradation and river bed cutting,the downstream energy dissipator of barrage cannot operate normally,the improvement or reconstruction is needed for the energy dissipator. Based on the research results of the hydraulic model test of improvement and reconstruction of three barrages in Guangdong Province,a reasonable layout of barrage downstream two stilling basin is studied. The optimization measures of primary stilling basin end still top height,andthe outer bulging step provided in its downstream slope are given. Theflow energy dissipation rate of stilling basin is greatly improved,the energy dissipator facilities are simplified,and the project investment is reduced. Key words:low head barrage;stilling basin;step energy dissipator;end still 摇 摇 通常,采用底流消能的低水头拦河闸是在其下 1摇 3座拦河闸下游两级消力池布置试验研究 游修建消力池,并在消力池下游设置海漫段和防冲 槽等,以确保拦河闸泄洪消能及其上、下游水流衔接