摘要
采用数值模拟软件MODFLOW研究初期坝透水能力以及干滩长度对尾矿坝浸润线埋深的影响,首先,根据概化的模型剖面建立该尾矿坝的三维模型;然后通过改变初期坝透水性以及干滩长度,研究不同条件下浸润线埋深的变化规律。研究结果表明:1)当初期坝排渗能力降低时,浸润线整个的位置往上移动,当初期坝渗透系数降至1e-6m/s时,堆积坝表面出现渗水现象,严重影响坝体的结构稳定性;2)干滩长度增加,整个的浸润面往远离坝面的方向移动,有利于坝体的稳定性。通过数值模拟方法研究了初期坝、堆积坝、干滩对坝体浸润线的影响,其研究成果可对尾矿坝安全设计提供补充的理论依据。
Through simulation software MODFLOW, we, according to the generalized model profile, will establish the three - dimensional model of railings dam. Then, in changing the different factors, we begin to study the influence law of different factors on the seepage line. The numerical calculation analysis shows： （1） With the decrease of seepage capacity of initial dam, the position of the whole seepage line shows an up trend. When the permeability coefficient of the initial dam is reduced to le-6 m/s, the dam surface shows the seepage phenomenon that will affect the stability of tailings dam seriously; （2） With the increase of the length of the dry beach, the whole seepage surface moves away from the direction of the dam surface, which is favorable to the stability of tailings dam. We think the influence law of different permeability initial dam, including the different dry beach length on depth of seepage line obtained through the numerical simulation analysis method can provide a supplementary theoretical basis for the safety design of tailings dam
出处
《中国锰业》
2017年第3期154-157,共4页
China Manganese Industry
基金
国家自然科学基金重点项目(51234004)
云南省教育厅重点项目(KKJD201521003)
关键词
尾矿库
数值模拟
初期坝
干滩
浸润线
Tailing dam
Numerical calculation
Initial dam
Dry beach
Seepage line
