库内降雨下的尾矿库坝体浸润线变化规律研究

龙源期刊网 https://www.360docs.net/doc/b35700410.html,

作者：唐永俊叶光凤

来源：《价值工程》2017年第08期

摘要：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。

Abstract： 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.

关键词：尾矿库；模型试验；浸润线；滞后

Key words： tailings dam；model test；infiltration line；lag behind

中图分类号：TV649 文献标识码：A 文章编号：1006-4311（2017）08-0170-02

0 引言

尾矿库是指筑坝拦截谷口或围地构成的，用以堆存金属或非金属矿山进行矿石选别后排出尾矿或其他工业废渣的场所。尾矿库是一个具有高势能的人造泥石流危险源[1]，存在溃坝危险，一旦失事，容易造成重特大事故。对于尾矿库的安全稳定而言，浸润线被称为尾矿坝的生命线，了解浸润线的变化规律对尾矿坝的安全至关重要，研究浸润线的变化特性也将对尾矿库的预警和安全评价等具有重要的意义。

1 实验内容