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首页> 外文会议>International Yellow River Forum on Keeping Healthy Life of the River vol.4; 20051021-24; Zhengzhou(CN) >Theory and Practice for Safety and Stability of Check Dams
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Theory and Practice for Safety and Stability of Check Dams

机译：止水坝安全稳定理论与实践

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摘要

Apart from artificial factors (design standards, engineering quality, etc.), the safety and stability of the check dams in operation for building farmland is mainly affected by such three factors as: the water and sediment discharge capacity of the dams, the water and sediment retention capacity of the dams, and the water - sediment regime of the watershed. For the check dams with only two major components, not only are their water and sediment discharge capacity limited, but also the floods of identical discharge have less water depth, and their discharge capacity decreases greatly for the flood of the same frequency with constant sedimentation. When water - sediment regime in a watershed is invariable, the reservoir storage formed by the check dam will decrease at a fixed rate, i.e. linearly, due to sedimentation, while flood control capacity of the dam lowers nonlinearly with sustaining operation and reduction of storage. Slope protection can reduce water and sediment inflow significantly so that check dams have a safe operating condition, maintaining long — term stability.
机译：除人为因素（设计标准，工程质量等）外，在建设农田中使用的止水坝的安全性和稳定性主要受以下三个因素影响：大坝的水和泥沙排放能力，水和水大坝的泥沙保持能力，以及流域的水-沙状况。对于仅具有两个主要组成部分的止水坝，不仅其水和泥沙的排放能力受到限制，而且相同排放量的洪水的水深也较小，对于相同频率，持续沉淀的洪水，其排放能力大大降低。当流域的水-沙状态不变时，由于沉淀作用，止水坝形成的水库储量将以固定的速率（即线性地）减少，而大坝的防洪能力随着维持运行和储量的减少而非线性降低。边坡防护可以显着减少水和沉积物的流入，从而使止水坝具有安全的运行条件，并保持长期的稳定性。

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