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首页> 外文会议>Congress of Asia and Pacific Division of International Association of Hydraulic Engineering and Research >OVERFLOW CHARACTERISTICS ON GRASSED INNER SLOPE DUE TO LEVEE OVERTOPPING
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OVERFLOW CHARACTERISTICS ON GRASSED INNER SLOPE DUE TO LEVEE OVERTOPPING

机译：由于堤坝覆盖为原因溢出的内坡溢出特征

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In this study, laboratory experiments were carried out to investigate the effect of grass conditions on overflow characteristics. A rectangular channel used for experiments is 20 m long,2.5 m deep and 5 m wide. The levee was built in the channel. The height and crest width of the levee were fixed at 1.5 m and 1.0 m, respectively. The length of levee was 5 m. The outer and inner slopes were fixed at 1V:2H. Two kinds of grass were selected as surface cover of the inner slope. The grass is man-made and 5.0 cm high. Overflow discharge was changed from 0.1m3/s to 0.5m3/s with a difference of 0.1 m3/s. The overflow depth and velocity along the levee slope were measured and compared with each other including a case without grass. The experimental results showed that the maximum velocity occurred at the toe of inner slope and the hydraulic loading became weaken in condition of the grassed surface compared with no-grassed surface.
机译：在这项研究中，进行了实验室实验，以研究草条件对溢出特性的影响。用于实验的矩形通道长20米长，2.5米深，宽5米。堤坝建于渠道。堤坝的高度和峰宽度分别固定在1.5米和1.0米处。堤坝的长度为5米。外斜坡固定在1V：2h。选择两种草作为内斜率的表面盖。草是人造的，高5.0厘米。溢出放电从0.1m 3 / s变为0.5m 3 / s，差异为0.1 m3 / s。测量沿着堤坝坡度的溢流深度和速度，并彼此比较，包括没有草的情况。实验结果表明，与无草面相比，内坡脚趾的最大速度和液压负荷变得疲软。

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