当前位置: X-MOL 学术Arab. J. Sci. Eng. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Experimental Study of Landslide Surge Wave Overtopping an Earth Dam
Arabian Journal for Science and Engineering ( IF 2.6 ) Pub Date : 2020-09-18 , DOI: 10.1007/s13369-020-04933-5
Jie Liu , Chunli Zhou , Jian Guo , Jing Liu

In this study, the experimental investigation on whether the landslide surge waves can influence the dam failure process caused by flood overtopping was presented. The experiments were conducted in a large width flume with length of 50 m, width of 4 m and height of 2 m. The time between the start of the earth dam break and the surge wave reaching the dam site was set to 80 s. During this period, the water depth of the reservoir constantly decreased. The experimental results showed that the surge wave height decreased while the propagation velocity increased slightly as the surge moved to the dam site. Several surge waves could overtop the dam crest and the shear height of the dam crest caused by each surge wave was a function of the surge wave height, which could be described non-dimensionally by Δz* = 0.946 Hs*2.113. The surge wave influenced the water level falling velocity and breach width expanding speed from the time of the overlay of the breaking dam. The surge wave could lead to a large instantaneous peak discharge that exceeded the dam failure peak discharge of the experiments with no surge wave.



中文翻译:

土坝上方滑坡浪涌波的实验研究。

在这项研究中,提出了关于滑坡浪涌波是否可以影响由洪水超顶引起的大坝破坏过程的实验研究。实验是在长50 m,宽4 m,高2 m的大宽度水槽中进行的。从土坝破裂开始到浪涌到达坝址的时间设置为80 s。在此期间,水库的水深不断减小。实验结果表明,随着涌浪移向坝址,涌浪高度降低,传播速度略有增加。几个浪涌可能会超出坝顶,并且每个浪涌引起的坝顶剪切高度是浪涌高度的函数,可以用无量纲描述Δz * = 0.946^ h小号* 2.113。从破坝的覆盖时间开始,浪涌波影响了水位下降速度和裂口宽度扩展速度。浪涌可能导致较大的瞬时峰值放电,超过没有浪涌实验的大坝破坏峰值放电。

更新日期:2020-09-20
down
wechat
bug