滤水坝设计

滤水坝是一种具有特殊用途的坝体结构,其设计理论、施工方法还不成熟。结合引青济秦取水口上游滤水坝工程设计,探讨了滤水坝结构设计理论,供读者参考。

生态滤水坝在改善河道水环境中的应用

详细介绍了淄川樊家窝滤水坝的构造及应用,为类似工程的建设提供了有益的参考。

生态滤水坝在改善河道水环境中的应用

在我国河道工程发展中,已逐渐向生态滤水坝的方向进行发展。基于对工程基本情况进行的分析,在河道水环境应用生态绿化坝实行合理的设计,并对生态滤水坝在改善河道水环境中运行情况进行探究。

新疆呼图壁新增供水工程滤水坝设计分析

滤水坝因设计、施工简单,综合成本低,在小型河流泥沙净化中应用较多,其核心为滤水闸段设计。以新疆呼图壁河新建滤水坝为实例,通过分析坝基岩性及物理力学性质可知,坝基无需加固,并以石门水文站数据为基础,分析泥沙含量及粒径分布,针对滤水坝坝体和滤水闸段进行详细设计。

滤水坝设计的几个问题

滤水坝技术变侧面引水为顶面引水,变拦污为排污,克服了常规引水口受砂石淤积及漂浮物阻塞的不良影响,在小型水利水电工程中值得推广应用。本文总结实践经验,对滤水坝特点及有关设计问题作了探讨,提出了不同规格栅格板在不同安装坡度情况下的坝上过水深度和单宽引进流量的关系表,可供设计者采用。

滤水坝引水流量的计算

滤水坝进栅流量与通过栅格板水流的栅首水深和栅尾水深的平均值有关,为q′=(3.10-4.43i)Ah_(CD)^(1、2)。试验资料表明,该平均水深比临界水深的平均值小16.5％,故h_(CP)=0.417(h_K~′+h_K~″)。本文介绍了采用合轴图解和列表计算相结合的方法,完成求解进栅流量必须进行的试算过程,较之苏联扎马林教授建议的试算方法简单明确。容易掌握。

Filtration Features in the Base of the Bratsk HPP （Hydroelectric Power Station） Concrete Dam

The design protection of the base of the Bratsk HPP （Hydroelectric Power Station） dam from filtration coming from the water reservoir included the arrangement of several cement-grout curtains and the system of drainage holes in the 2nd and 4th columns. During operation, increased hydrostatic back pressure at the base of the dam was found, which indicated the low efficiency of the base design protection. To reduce back pressure B. E. Vedeneev Hydro Technic Institute proposed the device of “advanced” drainage holes from the cement-grout gallery near the upstream face. The implementation of the proposal in a number of sections of the dam has led to a decrease in back pressure, but affected filtration in the drainage system, increasing it significantly. The article examines filtration features of “advanced” drainage holes and their dependence on the severity of winters. The spread of the practice of “advanced” drainage in other sections of the dam requires caution and further investigations of the nature of filtration.