库内降雨下的尾矿库坝体浸润线变化规律研究

Study on Variation Law of Tailings Dam Infiltration Line under Rainfall in the Reservoir

通过库内模拟降雨条件下的堆坝模型实验,研究了在库内降雨条件下坝体的浸润线变化规律,实验结果表明:库内水位的变化对浸润线的影响比较明显,坝体整体的浸润线高度随着库内水位的上升而不断上升;浸润线高度变化存在滞后于水位高度的现象,干滩面远端和干滩面中部处的浸润线高度变化滞后于水位高度不是太明显,在干滩面近端和坝体外坡处的浸润线高度滞后于库内水位高度比较明显,当库内水流渗流至干滩面近端和坝体外坡时,滞后现象逐渐消失,浸润线上升速率和水位上升速率基本一致。

The model experiment of heap dam under the condition of rainfall in the reservoir is carried out. The results show that, the influence of the water level changes on the infiltration line is obvious, and the height of the whole dam infiltration line increases with the rise of the water level in the reservoir. The height of the infiltration line is lagging behind the height of the water level, and the height of the infiltration line at the far end of the dry beach and the middle of the dry beach is lagging behind the height of the water level are not obvious. The infiltration line near the dry beach and the out slope of the dam lagging behind water height in the reservoir is more obvious.When the reservoir water seepage to the near dry beach and the out slope of the dam, the hysteresis phenomenon gradually disappeared, the rate of rise of the infiltration line and water level rise rate are basically the same.