摘要
负压强制脱水可加快充填的脱水速度,减小密闭墙的静水压力,有必要探索其脱水规律及最佳工艺参数。开发基于FEPG的水力充填负压强制脱水数值模拟的有限元程序,建立了负压强制脱水渗流速度与其影响因素的有限元数值分析模型,并采用正交试验原理,分析了不同脱水参数的负压强制脱水渗流速度。研究显示,随着脱水管中负压压差的增大,充填体内平均渗流速度增大,但负压增大至一定程度,对平均渗流速度的影响趋向于平稳,且随着充填高度的增大,平均渗流速度降低,随着负压管横向和纵向间距增大,平均渗流速度单调递减。
Forced dehydration with aegative pressure can speed up the dehydration rate and reduce hydrostatic force to seal wall. So it is necessary to seek the dehydration rules and its best technology parameters. For this, corresponding finite element method program of numerical simulation of dehydration with negative pressure is developed based on FEPG （ Finite Element Program Generator）, arid the finite element numerical analysis model of seepage velocity and its influence factors is established. We employ orthogonal test theory to analyze seepage velocity at different dehydration parameters. The results show that the seepage velocity increases sharply with the increasing of differential negative pressure in dehydration tube, but the increase,to some extent, cannot be expected to be sustained; while it is monotone decreasing with growing of the distance of two adjacent vacuum tubes ; And lowering the heights of tailings also has an obviously positive effect on the dehydrated efficiency.
出处
《金属矿山》
CAS
北大核心
2012年第2期1-4,11,共5页
Metal Mine
基金
国家自然科学基金项目(编号:51074178)
中南大学前沿研究计划项目(编号:2010QZZD001)
关键词
水力充填
渗流速度
数值模拟
IFEPG
Hydraulic backfilling, Seepage velocity, Numerical simulation, IFEPG
