降雨对尾矿库渗流场的动态影响

尾矿库能否安全运行的影响因素之一就是渗流问题。而降雨又是影响尾矿库渗流场的一个重要因素。运用ANSYS有限元软件的热力学模块建模,计算了3种干滩长度、3种降雨量及7种雨型,共计63种组合工况。分析计算发现,降雨时干滩长度越长,尾矿库出口节点渗透压上升越高。由此可知降雨时,如果尾矿库干滩面未做防渗排水防护措施,那么干滩长度越长对坝体的稳定越不利。建议尾矿库工程设计过程中考虑在干滩面设置防渗排水设施。

Dynamic Influences of Rainfall on Tailings Seepage

One of the most important factors that affect the normal operation of tailings is seepage and rain is an important factor affecting tailings seepage.In this paper,the data is calculated by using modeling analysis in thermodynamics model of ANSYS finite element software.Three types of length of dry beach,three types of rainfall and seven types of rain,a total of 63 kinds of combination are calculated.By analyzing the data,it is found that the longer the length of dry beach while raining,the higher the osmotic pressure at the exit node of the tailings.Therefore,if there is no protective measures of seepage at the dry beach surface,then the longer the length of dry beach,the more unstable of the dam.It is suggested that in the design process of the tailing,the seepage and drainage facilities should be considered.