永定河卢三段河工模型糙率模拟试验研究

来源 :北京水务 | 被引量 : 0次 | 上传用户：lichengjing626

【摘要】

：

通过水槽实验,运用水泥锥梅花加糙法,研究不同水泥锥布置和不同流量条件下的加糙糙率变化规律.将该加糙方法,用于永定河卢三段河工模型试验中,设计洪水条件下的试验水位与设

【作者】

：

綦中跃孙亚楠周星王远航张春义

【机构】

：

北京市水科学技术研究院 100048河北省廊坊水文水资源勘测局 065000;

【出处】

：

北京水务

【发表日期】

：

2019年6期

【关键词】

：

河工模型阻力相似水槽实验梅花加糙

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论文部分内容阅读

通过水槽实验,运用水泥锥梅花加糙法,研究不同水泥锥布置和不同流量条件下的加糙糙率变化规律.将该加糙方法,用于永定河卢三段河工模型试验中,设计洪水条件下的试验水位与设计水位基本一致,表明加糙结果合理、可靠.试验结果表明,水泥锥直径为2 cm、铺设间距为3.3 cm,可达到0.030的模型糙率要求.试验成果可为大比降沙卵砾石河床的河工模型试验加糙方案提供借鉴.

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